Optical fiber sensors
Distributed photothermal spectroscopy in microstructured optical fibers: towards high resolution mapping of gas presence over long distances
... distributed sensors have found major acceptance and have proven to be reliable and accurate ...Brillouin Optical Time Domain Analysis (BOTDA) or Phase-sensitive Optical Time Domain Refletometry ...
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Optical fiber temperature sensor based on a microcavity with polymer overlay
... In the last twenty years lab on a chip (LOC) devices have emerged as a feasible technology for a number of applications such as analytical chemistry [1], point-of-care diagnostics [2], genomic research [3], etc. One of ...
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Real Time Monitoring of Railway Traffic Using Fiber Bragg Grating Sensors
... Optical fiber sensors have gained increased acceptance in the civil engineering domain and now their use is widespread for structural health ...of optical fiber sensors is ...
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Temperature measurement by means of fiber specklegram sensors (FSS)
... the fiber array, finding a linear response of the system and a sensitivity superior to the previously reported for studies in similar ...of optical fiber sensors in a large number of ...
7
Optical code division multiplexing in the design of encoded fiber Bragg grating sensors
... FBG sensors using concepts from OCDMA have been previously presented, for example, in references [3-6] it is proposed the modulation of a broadband optical source by a pseudorandom binary sequence ...of ...
12
Design and optimization of optical, fiber based PSK demodulators for high-bit-rate optical networks
... In optical communications, the DB format is also referred to as phase-shaped binary transmission (PSBT) [Penn 97] and phased amplitude-shift signaling (PASS) [Star ...an optical DB signal, the data should ...
172
Protecting fiber optic links from third party intrusion using distributed acoustic sensors
... an optical time-domain reflectometer ...in optical networks with throughputs on the order of gigabits and terabits per ...of optical networks ...in optical networks could potentially minimize ...
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Laser frequency offset compensation in coherent optical fiber communication links
... Optical Communications play a critical role in the telecommunications world. They are able to provide a big amount of data and to complement the Wireless Communications. Within the Optical Communications we ...
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A novel dispersion monitoring technique in W-band radio-over-fiber signals using clustering on asynchronous histograms
... Optical fiber impairments affect the transmitted information signal to a greater or lesser extent depending on the type of fiber, trans- mission distance, modulation formats and detection techniques ...
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Sensores de fibra óptica tipo redes de Bragg embebidos en material compuesto para medir deformaciones y temperaturas criogénicas
... En la última década se han visto muchas aplicaciones de los sensores tipo fibra óptica con redes de Bragg, FBGS acrónimo de la lengua inglesa: Fiber Bragg Grating Sensors en diferentes c[r] ...
250
Numerical modeling of fiber specklegram sensors by using finite element method (FEM)
... of sensors, metrological characteristics as linearity, sensitivity and dynamic range, can be tuned mechanically, what is an important result for the implementation of any ...filtering fiber has dimensions ...
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NOMAD spectometer on the ExoMArs trace gas orbiter misión : part 2 - design, manufacturing, and testing of the ultraviolet and visible channel
... A tube connects the periscope and the occultation telescope to prevent straylight from getting in the telescope. The internal surface is textured with small ridges to reduce straylight and is manufactured from aluminum ...
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Chemical and biochemical sensing applications of microstructured optical fiber based systems
... of optical fibers are not the key parameters in these struc- ...cladded optical fibers, 50 cm in length, in which polystyrene micro- spheres were deposited in one of the extremes for remote ...
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Nonlinear effects of carbon nanotube coated single mode optical fiber gratings
... size), and then detachment of the film by submersion in water. Part of the floating film was collected by slowly lifting and rotating the optical fiber as it was pulled through the film in order to obtain a ...
6
Fully distributed optical fiber strain sensor with 10−12ε/√Hz sensitivity
... Advanced optical fiber reflectometry techniques enable spatially distributed measurements of true relative deformations over the length of a conventional optical fiber ...the optical ...
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Zero gain slow & fast light propagation in an optical fiber
... two optical waves were generated through modulation of the CW light from one commercial DFB laser diode emitting at a wavelength of 1532 ...the optical spectrum at the modulator output contains only the two ...
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Fabricación de rejillas de Bragg en una fibra óptica.Fabrication of Bagg gratings in optical fiber.
... contacto con la mascarilla de fase; esta base junto con todo el arreglo fue colocada sobre una mesa de trabajo que se acondicioné para poder transportar todo el montaje al laboratorio de[r] ...
97
Multiplexado de sensores basados en la interferometría de baja coherenciaMultiplexing of low coherence interferometric fiber optic sensors
... cristal fiber), se tiene una insensibilidad a la temperatura, lo que permite seleccionar longitudes de onda en canales de comunicaciones por fibra óptica, sin cuidar tanto las condiciones ambientales de ...
124
On the application of periodic quantum wire nanostructures in optical sensors
... In this work we have studied the physics of light interaction with a certain periodic silicon-based nanostructure. Firstly, we have calculated the miniband structure of the system, observing energy gaps in the same ...
6
Active Optical Sensors for Tree Stem Detection and Classification in Nurseries.
... Delwiche and Vorhees [2] developed an optoelectronic system to count and size fruit and nut trees in commercial nurseries. For this purpose, an optical sensor was designed using a high-power infrared laser for ...
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