A fiber optic connector holder is sized to fit within an opening for mounting a fiber optic adapter. The fiber optic connector holder is configured to permit a fiber optic connector with a dust cap positioned about a ferrule and a polished end face of an optical fiber held by the ferrule to be inserted within and releasably held by the connector holder. A system for holding fiber optic connectors includes a fiber optic connector holder mounted within an opening in a bulkhead for mounting a fiber optic adapter. The fiber optic connector holder is configured to receive a fiber optic connector with a dust cap mounted about a ferrule and polished end face of an optical fiber held by the ferrule. A optical fiber connector may be held to a bulkhead when the fiber optic connector includes a dust cap mounted about a ferrule and a polished end face of an optical fiber held by the ferrule.

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This invention provides a method of marking a fiber optic indicia on the surface of a fiber optic component and the fiber optic component produced thereby. The fiber optic indicia is represented as a predetermined pattern marked on the fiber optic component and is associated with data about at least one of an optical characteristic and a product characteristic. According to a preferred embodiment, the fiber optic indicia is marked on a chamfered surface of a ferrule. The fiber optic indicia may include at least one alphanumerical character, a symbol, or combinations thereof. The method comprises establishing the predetermined pattern of the fiber optic indicia, providing a fiber optic component for marking, preparing a predetermined portion of a surface of the fiber optic component for marking, and marking the predetermined portion in accordance with the predetermined pattern of the fiber optic indicia.

Global Fiber Optic Current Sensor (FOCS) Market Professional Survey Report 2017 1 Industry Overview of Fiber Optic Current Sensor (FOCS) 1.1 Definition and Specifications of Fiber Optic Current Sensor (FOCS) 1.1.1 Definition of Fiber Optic Current Sensor (FOCS) 1.1.2 Specifications of Fiber Optic Current Sensor (FOCS) 1.2 Classification of Fiber Optic Current Sensor (FOCS) 1.2.1 DC Type 1.2.2 AC Type 1.3 Applications of Fiber Optic Current Sensor (FOCS) 1.3.1 Electrowinning 1.3.2 Power Grids 1.3.3 Other Industries 1.4 Market Segment by Regions 1.4.1 North America 1.4.2 China 1.4.3 Europe 1.4.4 Southeast Asia 1.4.5 Japan 1.4.6 India 2 Manufacturing Cost Structure Analysis of Fiber Optic Current Sensor (FOCS) 2.1 Raw Material and Suppliers 2.2 Manufacturing Cost Structure Analysis of Fiber Optic Current Sensor (FOCS) 2.3 Manufacturing Process Analysis of Fiber Optic Current Sensor (FOCS) 2.4 Industry Chain Structure of Fiber Optic Current Sensor (FOCS) 3 Technical Data and Manufacturing Plants ...

Fiber optic technology is opening exciting new fields of application in the medical industry. The physical characteristics of fiber make it a natural choice for many uses. Optical fiber has become widely used in imaging, laser delivery systems, illumination, sensors, and equipment interconnects. Optical fibers provide a compact and flexible conduit for light or data delivery in diagnostic and interventional medical applications. In order to be effective, optical fibers require robust, precise interconnects that integrate seamlessly into the medical theater. Diamond has the expertise to make these interconnects a reality.. Fiber Optics Applications Fiber optic solutions applicable for several medical sectors, such as Illumination, image transfer, diagnostic devices, surgical instrumentation, therapeutic applications, and laser signal delivery, sensor, and equipments.. Ophthalmic surgical fiber optics ...

An improved fiber optic sensor, sensing apparatus, and methods for making optical determinations are provided. The fiber optic sensor employs a fiber optic strand to convey light energy and at least one polymer matrix comprising a fluid erodible, continuous release polymer and a releasable reagent formulation able to react with a molecule or analyte of interest. The optic sensors and sensor construction has been demonstrated to be accurate, precise, and of long duration.

In recent years,photonics has emerged as an essential technology related to such diverse fields like laser technology,fiber optics,communication,optical signal processing,computing,entertainment,consumer electronics etc.Availabilities of semiconductor lasers and low loss fibers have also revolutionized the field of sensor technology including telemetry. There exist fiber optic sensors which are sensitive,reliable.light weight and accurate devices which find applications in wide range of areas like biomedicine,aviation,surgery,pollution monitoring etc.,apart from areas in basic sciences.The present thesis deals with the design,fabrication and characterization of a variety of cost effective and sensitive fiber optic sensors for the trace detetction of certain environment pollutants in air and water.The sensor design is carried out using the techniques like evanescent waves,micro bending and long period gratings ...

Fiber optic display systems and related methods are disclosed. According to one embodiment, a fiber optic display system can include a plurality of fiber optics. Output ends of the fiber optics can be spaced from one another and can be arranged in predetermined positions such that at least a portion of the output ends are positioned in a first plane and another portion of the output ends are positioned in a second plane. A light-transmissive material can contain the output ends. The output ends can terminate within the light-transmissive material and can be angled with respect to the light-transmissive material such that light transmitted within the fiber optics emits into the light-transmissive material. A light source can generate a plurality of light beams and selectively control input of the light beams into the input ends for transmission of light in the fiber optics such that an image is formed.

The methods and apparatus of the present invention provide advantages for remote laser delivery systems that conduct high levels of light energy through a fiber optic cable to a selectable target surface. Helical fiber optic mode scramblers in accordance with the present invention are an integral portion of a fiber optic cable having a rigid curvature predetermined to advantageously influence the intermodal dispersion characteristics of the fiber optic cable. The various aspects of the present inventions may be employed to increase the useful life of a fiber optic cable, increase the energy throughput of a fiber optics cable, implement smaller sized scramblers, implement more efficient scramblers or to provide for robust implementations that are also easy to assemble. Scrambler assemblies in accordance with the present invention include a support structure and a cylindrical sleeve that work in tandem to maintain to the predetermined spiral curvature of the helical mode scrambler.

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Global Fiber Optic Receiver Market is expected to see huge growth opportunities during the forecast period, i.e., 2020 - 2027, Says Decisive Markets Insights.. The report covers Fiber Optic Receivermarket size and forecast, market share of the key players in the global Fiber Optic Receivermarket, current growth trends and future trends, market segmentation, value chain analysis, market dynamics which includes market drivers, restraints and opportunities. Along with this, the report also includes import and export data of the market along with cost price, revenue and gross profit.. To avail Sample Copy of the report @https://decisivemarketsinsights.com/fiber-optic-receiver-market/44258051/request-sample. Fiber Optic Receiver Market Analysis. Basis above findings and observations, our team has derived a robust CAGR of xx% from 2020 to 2027, expected to have a spiralling rise enfolding in next five to seven years. The dollar value of the above Fiber Optic Receiver market is expected to showcase a ...

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Fiber optic sensors have gained increasing importance in recent years and are well established in many areas of industrial applications. In this paper, we introduce a concept of a self-diagnostic fiber optic sensor. The presented sensor is to resolve the problems of embedded fiber optic sensors in complex structures and to enable the validation under operational conditions. For this purpose, different magnetostrictive coated fiber optic sensors were developed and various experiments were performed to verify their mode of Operation and to determine the respective reproducibility. The measuring principle is illustrated by obtained experimental results, which showed a change in wavelength from 1 pm at a magnetic field strength change of 0.25 mT. In addition, the temperature characteristics of the implemented magnetostrictive sensor were analyzed and an experimental factor of 1.5 compared to a reference fiber optic sensor was determined ...

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TY - JOUR. T1 - NIR spectrum analysis of natural gas based on hollow-core photonic bandgap fiber. AU - Li, Xuefeng. AU - Liang, Jinxing. AU - Lin, Shuo. AU - Zimin, Yury. AU - Zhang, Yupeng. AU - Ueda, Toshitsugu. PY - 2012. Y1 - 2012. N2 - In this paper, we present a quantitative near-infrared spectroscopy measurement of the chemical compositions of gas mixtures, such as natural gas, based on a photonic bandgap fiber gas cell. The absorption spectra of the methane and ethane gases were investigated in the near-infrared region. The absorption lines of the ethane gas were observed in the 1600-1616-nm region, and were totally different from those of the methane gas. To our knowledge, this is the first study to measure the individual absorption lines of ethane in this range of wavelengths, and our finding has a great potential for sensing highly sensitive gases.. AB - In this paper, we present a quantitative near-infrared spectroscopy measurement of the chemical compositions of gas mixtures, such ...

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The authors are experts in their respective fields of fiber optics, with good experience in the fiber optic industry. They contribute their technical knowledge in fiber optics and share with others interested in fiber optics.

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A side-polished multimode fiber sensor based on surface plasmon resonance (SPR) as the transducing element with a halogen light source is proposed. The SPR fiber sensor is side polished until half the core is closed and coated with a 37 nm gold thin film by dc sputtering. The SPR curve on the optical spectrum is described by an optical spectrum analyzer and can sense a range of widths in wavelengths of SPR effects. The measurement system using the halogen light source is constructed for several real-time detections that are carried out for the measurement of the index liquid detections for the sensitivity analysis. The sensing fiber is demonstrated with a series of refractive index (RI) liquids and set for several experiments, including the stability, repeatability, and resolution calibration. The results for the halogen light source with the resolution of the measurement based on wavelength interrogation were ...

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The advantages of fiber optic illumination can be found in the creation of maximum illumination density in a small area. At magnifications greater than 40x in connection with very small object fields of only a few millimeters, the Photonic fiber optic spot lighting with integrated focusing lenses provides more than sufficient brightness for examining dark coloured and light absorbing objects.. The Photonic F3000 LED light source has been developed for routine and high end microscopy applications. Its compatible with all Photonic fiber optic light guides and can outperform a 150W halogen light source in terms of luminosity. The robust metal housing is designed for long-term, stable operation and is stacking capable.. ...

DK Photonics Technology Limited, a China based manufacturer and exporter of high-end optical passive parts, recently launched superior-quality fiber optic communication tools. The owners of the manufacturing firm expressed that the components are instrumental in fiber senser applications as well as fiber laser applications. The Shenzen, China best company now aims to expand the export market for its CWDM Mux/DeMux products and other sophisticated products that are high in demand in fiber optic communications sector.. The company owners revealed that high-power isolators as well as different phase modulation products are actually their flagship products. They claimed that the mini CWDM and DWDM products that they are offering now facilitate expansion of bandwidth capacity. They also claimed that the compact CWDM products are some of the smallest packages now available in the fiber optic communication industry. We have used new technology in manufacturing the CDWM modules as well as the other ...

A Fiber Optic Sensor for Determination of 2,4-Dichlorophenol Based on Oxygen Oxidation Catalyzed by Iron(III) Tetrasulfophthalocyanine;kpubs;kpubs.org

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Mid-infrared Raman sources based on spontaneous Raman scattering have been demonstrated in a 15-μm diameter glass-clad crystalline germanium optical fiber and in a germanium-wire. A quantum cascade laser was used as pump at a wavelength of 5.62 μm. Because of their ultra-high optical nonlinearities and extremely broad transparency window, germanium core fibers offer the possibility of fabricating compact and efficient mid-infrared sources. ...

Used widely in safety applications. Fiber optic sensors are commonly used in hazard detection systems, such as to spot cracks in pipelines, identify deformations in civil engineering structures and detect potential landslides on mountain slopes. The sensors can take temperature readings everywhere a fiber is placed, thereby generating a continuous heat diagram of a given site - even if the site stretches for dozens of kilometers. That provides crucial insight into possible accidents before they happen.. Improving signal quality. Working in association with the Beijing University of Posts and Telecommunications, two GFO engineers - postdoc Zhisheng Yang and PhD student Simon Zaslawski - developed a new system for encoding and decoding data sent along the fibers. With their method, sensors can receive higher-energy signals and decode them faster, resulting in measurements taken more rapidly and over a larger area. Their research has just been published in Nature Communications.. The engineers ...

This paper outlines the development of a dual hydrazine/nitrogen dioxide (HZ/NO2) prototype fiber optic sensor utilizing an acid-base indicator that undergoes color changes depending on which gas is present. Bromothymol blue bromocresol green mixture (1/1) in hydrogel (1/1), produces a blue-green indicator for HZ and/or NO2. The sensor was tested several times over a period of eight weeks and the response was consistent and proved the feasibility of dual HZ/NO2 leak detection. Prototype sensor construction, the hardware, and the software of the electronic interrogator circuitry are briefly explained. The paper presents a summary of sensor response when exposed to 52 ppm and 18 ppm hydrazine and 400 ppm and 200 ppm nitrogen dioxide ...

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Fiber optic chemical sensors and materials suitable for use in making same are provided. A charged hydrogel matrix membrane is suitable for affixing to the distal end portion and the like of an optical fiber waveguide, which charged hydrogel matrix has dispersed therewithin an oppositely charged ion exchange resin powder, which ion exchange powder has a colorimetric indicator component electrostatically coupled thereto, which colorimetric indicator component has the same charge as the charged hydrogel.

Development of plastic scintillation detector (PSD) systems for dosimetry has been evolving for two decades now. The subject area has been a topic of a keen research interest that has generated lot of publications lately. PSD systems are being introduced in the market place. Numerous PSD systems for External Beam Radiation Therapy and Brachytherapy have been proposed, most times differentiating from the original systems by slight changes in one or more components, such as the photodetector. However, few major technological and engineering innovations have enabled this new technology to be embraced by the community which helped launching these systems for commercialization (Standard Imaging, Radiadyne, etc.). Scintillation materials (plastic, scintillating fibers and liquid) have many properties that make them ideal for dosimetry including water equivalence and energy independence for MV photons, linearity with dose, dose rate independence, high spatial resolution and nanosecond fast response time.

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To help reduce the impact of geohazards, an innovative landslide early-warning technology based on an energy demodulation-based fiber optic sensing (FOS-LW for short) technology, is introduced in this paper. FOS-LW measures the energy change in a sensing fiber at the segment of micro-bending, which can be caused by landslide movements, and automatically raises an alarm as soon as the measured signal intensity in the fiber reaches a pre-set threshold. Based on the sensing of micro-bending losses in the fiber optics, a two-event sensing algorithm has been developed for the landslide early-warning. The feasibility of the FOS-LW technology is verified through laboratory simulation and field tests. The result shows that FOS-LW has some unique features such as the graded alarm, real-time responses, remote monitoring, low cost and passive optical network, and can be applied in the early-warning of landslides.

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The overall project goal is to adapt and validate a rapid and accurate optical fiber-based technology for cyanoHAB cell detection and enumeration in both laboratory and field settings. Specific objectives are to: 1) design ribosomal RNA (rRNA) signal and capture probes for the three most important toxic cyanobacteria (Microcystis aeruginosa, Cylindrospermopsis raciborskii, and Anabaena flos-aquae) using published sequences; 2) design and test a second probe pair for each species to incorporate redundancy into the array; 3) test these probes in the fiber-optic array format and determine detection limits, specificity, and dynamic range; 4) refine hybridization conditions to reduce processing time; 5) develop procedures to analyze multiple cyanoHAB species simultaneously using a single fiber bundle in a multiplexed format and validate it using mixed cultures and spiked and unspiked field samples; 6) work with individuals and agencies responsible for fresh- and brackish water management to determine ...

On Saturday, a ship waiting to enter the Kenyan port city of Mombasa wandered into a restricted area and dropped its anchor, inadvertently |a href=http://online.wsj.com/article/SB10001424052970203833004577249434081658686.html|severing a major undersea Internet and phone link|/a| to East Africa. This kind of thing happens from time to time, but Saturdays incident represents a particular stroke of bad timing. The cable severed was already overworked, rerouting data from three other cables that were accidentally severed a week prior in the Red Sea. All said, these fiber-optic channels are the backbone of East Africas telecommunications infrastructure. Now one single undersea fiber-optic link is left to carry the entire load for all of East Africa, slowing internet connections in Rwanda, Kenya, Burundi, Ethiopia, Tanzania, and South Sudan by 20 percent until repairs are made, a process that could take weeks. Before plugging into the high-capacity subsea fiber optic network three years ago, most Internet

Fiber optic Raman spectroscopy is used for in situ monitoring of supersaturation during the hanging-drop crystallization of aprotinin. Schwartz and Berglund (1999) previously demonstrated this technique for lysozyme crystallization and showed it combines two critical elements for protein crystallization studies: real-time monitoring/ control of supersaturation and small amounts of sample. Experiments were carried out using 10 muL of protein solution. A partial-least-squares (PLS) calibration based on Raman spectra of standard solutions allowed an accurate measurement of aprotinin in a range of 2-100 mg/mL with a standard error of 0.54 mg/mL determined by a leave-one-out cross validation. A 10x microscope attached to a Raman fiber optic probe allowed the monitoring of the hanging-drop liquid phase in a noninvasive and real-time mode. Aprotinin solubility determined by measuring the protein concentration of drop solution at equilibrium decreased with increase in NaCl concentration. By continuously ...

Fiber optic Raman spectroscopy is used for in situ monitoring of supersaturation during the hanging-drop crystallization of aprotinin. Schwartz and Berglund (1999) previously demonstrated this technique for lysozyme crystallization and showed it combines two critical elements for protein crystallization studies: real-time monitoring/ control of supersaturation and small amounts of sample. Experiments were carried out using 10 muL of protein solution. A partial-least-squares (PLS) calibration based on Raman spectra of standard solutions allowed an accurate measurement of aprotinin in a range of 2-100 mg/mL with a standard error of 0.54 mg/mL determined by a leave-one-out cross validation. A 10x microscope attached to a Raman fiber optic probe allowed the monitoring of the hanging-drop liquid phase in a noninvasive and real-time mode. Aprotinin solubility determined by measuring the protein concentration of drop solution at equilibrium decreased with increase in NaCl concentration. By continuously ...

With the rapid development of modern cities, the problem of heavy metal pollution in soil, atmosphere, and especially in water environment becomes increasingly serious [1]. The continuous discharge of effluent from mining, corrosion, agriculture drugs, electronics manufacturing, and so on, has made heavy metal pollution one of the core issues of water environment. Along with other chemicals, heavy metals are extremely toxic and exposure to them causes adverse effects on ecosystem and human if exceeding a crucial point [2]. Copper being a heavy metal, is one of crucial transition metallic elements to human health and many living tissues but also one of the most common pollutants contained in industrial wastewater [3]. Excessive intake of copper may cause serious syndrome diseases including anemia brain disorders, cirrhosis of liver, perception nerve barrier, and even death [4,5]. Therefore, the quantitative and accurate detection of Cu2+ ions in water environment is not only an important part of ...

This paper presents non-silicon MEMS technology for fabrication of Optical communication components. Both pure non-silicon and combined micromachining technologies were realized. For the pure non-silicon surface micromachining technology, the Ni and permalloy were chosen as the structure layer; the photo resist and copper were chosen as the sacrificial layer. Based on the technology, the micro-hinge was realized. It may find ample application in the out-of-plane microstructure, which is common in free-space optical transmission. As an example, a MEMS variable optical attenuator is introduced. It consisted of a hinged shutter to adjust the optical power transmission between the input and output optical fibers. For the combined micromachining fabrication, the electroplating was combined with the traditional bulk silicon technology to realize some unique structure for passive alignment. For example, we had developed the micro-fabricated nickel clamps for packaging of optical fibers in photonics ...

The basic concept of this invention involves the use of a wire or capillary tube as a template strand. The outside diameter and shape of the template strand correspond to the inside diameter and shape of a desired separation capillary. A detector may be incorporated by providing a pair of electrode wires, or the ends of a pair of optical fibers, and pressing them against opposite sides of the template. As plastic is then polymerized around this asssembly by casting or molding. The template is then removed, leaving a capillary channel with a sidewall incorporating the wire electrodes and optical fibers. Using this method, it is possible to form a single unit including a separation capillary, conductivity detector, and spectroscopy detector.

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A pressure measurement system and method are described. The system uses a tunable laser and a Fabry-Perot sensor with integrated transducer. A detector senses the light modulated by the Fabry-Perot sensor. A signal conditioner, which can be located up to 15 km away, then uses the detector signal to determine the displacement of the diaphragm, which is indicative of pressure exerted against the diaphragm. Use of a temperature sensor to generate a signal, fed to the signal conditioner, to compensate for temperature is also contemplated.

0022]In one of the preferred applications of the invention, 3.75 mmol PEG material with a hydroxyl end is dissolved in 180 ml toluene solvent. This solution is processed with dean-stark distillation method for 3 hours and moisture content that is trappedinside the PEG material is removed from the material. PEG and toluene solution, with the moisture removed from its content, is processed with 7.5 mmol gamma-isocyanatopropyltriethoxysilane for a certain period at approximately 50quadratureC; hence, the hydrophilic material and binding agent mixture is obtained. In addition, PFA, particularly 6 g perfluoroalkylethylalcohol, and 3.41 g gamma-isocyanatopropyltriethoxysilane that is used as a binding agent is dissolved in 42 ml tetrahydrofuran solvent. Tin (II) 2-ethylhexanoate is included in this solution as a catalyst and the solution is mixed. At the end of this process PFA reacts with one of the trialcoxy silane groups, gamma-isocyanatopropyltriethoxysilane, which is used as a binding agent and ...

(KudoZ) Italian to English translation of Didi Laser accoppiati con fibra ottica con laser driver rosso, blu o verde: Fiber optic laser diodes with red, blue or green laser drivers / Fiber-coupled laser diodes... [Tech/Engineering].

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Many aspects set up fiber content installation apart from standard power jobs. Dietary fiber optic glass is very vulnerable; its nominal outside diameter is 125um. The least scratch, label as well as speck of grime will change the transmission of gentle, degrading the transmission. Safety factors are crucial simply because you are working with glass that could sliver to your skin without being viewed by the eye. Transmission level lasers are extremely hazardous, and require that defensive eyeglasses is necessary. This market has generally been coping with tone of voice and information class circuits that could tolerate some disruption or slow down of transmission. The person communicating would perform repeatedly them selves, or perhaps the info would retransmit. Right now our company is handling IPTV signs and buyers who can not accept pixelization, or momentary securing of your picture. Each of the circumstances described are reason for the customer to find another service provider. Each ...

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Telecommunications industry is expressing curiosity and skepticism about little-known San Diego start-up company, Silk Road Inc, that says it is ready to market technology that significantly increases amount of data that can be sent over fiber optic cables (M)

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Licenses and certificates - Modern Telecommunication Networks and Fiber Optic Networks - TP TELTECH. TP TELTECH - Security Systems and Monitoring, Telecommunication Networks WAN and LAN

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Miniaturised optical coherence tomography (OCT) fibre-optic probes have enabled high-resolution cross-sectional imaging deep within the body. However, existing OCT fibre-optic probe fabrication methods cannot generate miniaturised freeform optics, which limits our ability to fabricate probes with both complex optical function and dimensions comparable to the optical fibre diameter. Recently, major advances in two-photon direct laser writing have enabled 3D printing of arbitrary three-dimensional micro/nanostructures with a surface roughness acceptable for optical applications. Here, we demonstrate the feasibility of 3D printing of OCT probes. We evaluate the capability of this method based on a series of characterisation experiments. We report fabrication of a micro-optic containing an off-axis paraboloidal total internal reflecting surface, its integration as part of a common-path OCT probe, and demonstrate proof-of-principle imaging of biological samples ...

Physical Optics Corporation (POC) studied intense terahertz (THz) generation through optical rectification in bulk low-temperature growth GaAs (LG-GaAs) and quasi-phase-matched orientation pattern GaAs (OP-GaAs). POC performed simulations based on one-dimensional coupled propagation equations of THz and optical fields and conducted experimental tests. The results show that a LG-GaAs crystal with 0.5mm-thick under the excitation of a compact all-fiber femtosecond laser (76 MHz, 100 fs, 100 mW, 800 nm) can generate wide frequency range from 0.1 to 8.2 THz. The enhanced conversion efficiency was found for OP-GaAs crystal that can generate an average THz power of several milliwatts. Both theoretical and experimental results show that average THz output power is proportional to the energy fluence of the excitation source rather than the laser power for ultra-short pulse source. These achievements provide an effective approach to increase THz output power ...

The paper presents the technology and testing measurements of Mach-Zehnder interferometer made by K^{+}-Na^{+} ion exchange in glass. As a splitter and coupler of measuring and reference arms we used gradient index multimode interference structures in symmetrical configuration. The investigated interferometer, working in asymmetrical configurations, registers the phase shifts resulting from the changes of refractive index of the cover of both interferometer arms ...

In recent years, the Brazilian government has increased incentives for the research and development of renewable energy sources. Within this scenario, biodiesel plays an important role, as biofuel can either be incorporated as part of or even replace diesel - the liquid fuel most produced, commercialized and consumed in Brazil 11 L. A. H. Nogueira, B. Pikman, Biodiesel: as novas perspectivas de sustentabilidade, ANP Informe conjuntura & Informação, vol. 19, pp. 1-4, 2002.,22 ANP Agência Nacional do Petróleo, Gás Natural e Biocombustíveis - Brasil, Anuário Estatístico Brasileiro do Petróleo, Gás Natural e Biocombustíveis, 2012.. Besides the renewability, biodiesel combustion brings less impact to the environment than the use of other fossil fuels. From 2005 on, the addition of biodiesel to diesel was mandatory and the biodiesel percentage in biodiesel-diesel blend has been increased in the long run 33 LEI Nº 13.033, DE 24 DE SETEMBRO DE 2014. According to the Brazilian law number ...

The uniformization of Gaussian beam intensity is necessary in many applications. In active night-vision, monitoring targets especially requires this. IR semiconductor laser is widely used in the area because of its low power-consumption and small size. But the effects of the product are restrained due to system output Gaussian beam of ununiform intensity. The essay discusses a former system design and then gives an improved experimental scheme with some exciting results. The previous structure was as follows. High power SQW-LD beam was coupled to a plastic optical fiber (POF) directly, and then output through a lens. With its angle varied, targets ranged from 60 to 100 meters can be monitored. But unfortunately there were interference speckles folded on the target. An experimental system based on the thoughts of fiber transmission and complex filter was designed to improve the distribution of Gaussian beam intensity, with the result that the relatively well-distributed beam was got. Laser ...

alphadogg writes Charles Kao, whose work in the 1960s laid the foundation for todays long-distance fiber-optic networks, has won a share of this years Nobel Prize in Physics (PDF). Kao, sometimes referred to as the father of fiber-optic communications, was formally honored by the Nobel Foundati...

The massive transfer of data over the Internet that is vital to todays economy in our information society would not be possible without the crucial role played by fibre optics communication. Every time a node of the Internet sends information, it encodes a sequence of digital bits composing the message into light pulses. These light pulses are later sent through an optical fibre to a receiving node that converts the light signal back to the original sequence of bits.. The increase demand for higher data transfer raises the natural question on what are the fundamental physical limits to the information transmission rate over optical links. Raul García-Patrón, former member of the Theory Division of Professor Ignacio Cirac at the Max Planck Institute of Quantum Optics, with collaborators from Pisa, Brussels and Moscow, has recently answered this question (Nature Photonics, 21 September 2014), concluding a research program that started during his Humboldt postdoctoral fellowship at the MPQ ...

Mitsubishi Electric Corporation (TOKYO: 6503) announced today that it has completed work on the India-Middle East-Western Europe (IMEWE) Cable Network to upgrade the submarine cable network with 40 gigabits per second (Gbps) dense wavelength division multiplexing (DWDM) technology. The upgrade involved installation of submarine line terminal equipment in eight countries. The IMEWE Cable System, which was commissioned in 2010 as a 10 Gbps DWDM system, is an ultra high capacity fiber optic submarine cable system which links India to Europe via the Middle East. This cable network system with a total length of approximately 12,091 kilometers is complemented with 10 terminal stations owned by a consortium of nine leading telecom carriers in eight countries: India, Pakistan, UAE, Saudi Arabia, Egypt, Lebanon, Italy and France. The cable system comprises three optical fiber cable pairs with two fiber pairs on an express path, as well as a terrestrial link connecting the cities of Alexandria and Suez in ...

linephoto , E+ , Getty ImagesA team in Denmark has developed a sensor-based system which could help to tackle air pollution by detecting ammonia and other gases emanating from the agriculture sector.Alongside chemical engineers and chemists, researchers from Aarhus University and the Technical University of Denmark worked on the technology as part of the Ecometa project, which is focused on cutting emissions connected to agriculture. The researchers at the universities are focused on photonics, a term the European Commission has described as the science and technology of light. Details of their system have been published in the journal MDPI Photonics.According to an announcement earlier this week, those involved in the project have produced an integrated optical sensor which measures ammonia in the air using a laser, a gas sensor and hollow-core optical fibres.Andreas Hansel is a postdoctoral researcher at Aarhus Universitys Department of Engineering. In a statement issued Tuesday, he ...

The present disclosure relates to a fiber optic network configuration having an optical network terminal located at a subscriber location. The fiber optic network configuration also includes a drop terminal located outside the subscriber location and a wireless transceiver located outside the subscriber location. The fiber optic network further includes a cabling arrangement including a first signal line that extends from the drop terminal to the optical network terminal, a second signal line that extends from the optical network terminal to the wireless transceiver, and a power line that extends from the optical network terminal to the wireless transceiver.