Results 151 to 160 of about 1,111 (187)
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Fiber Bragg grating arrays for high resolution manometry
SPIE Proceedings, 2009We demonstrate the application of a fiber Bragg grating based sensor system as a distributed pressure sensing catheter for the human esophagus. It allows space-time resolved measurements of the peristaltic waves of the gullet. The sensor system comprises 30 fiber-optic pressure sensors in a single fiber with a spatial distance below 10 mm each.
Martin Becker +7 more
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Strain measurements using fiber Bragg grating array
Frontiers in Optics, 2005A 3 element, 15 cm Fiber Bragg Grating Array (FBGA), utilizing Coherent Optical Frequency Domain Reflectometry interrogation, was attached to a 75 cm cantilever beam. FBGA axial strain results showed agreement with electric strain gages.
Abdeq M. Abdi +3 more
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IEEE Transactions on Instrumentation and Measurement, 2008
In this paper, we report on nonlinearity compensation for a solid-state fiber bragg grating (FBG) sensor interrogation system based on an arrayed waveguide grating (AWG) device. A lookup table with calibration data is used to improve system linearity. A reduction in the absolute value of the measurement error from 120 mustrain or 15degC to 4.8 mustrain
Grzegorz Fusiek +3 more
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In this paper, we report on nonlinearity compensation for a solid-state fiber bragg grating (FBG) sensor interrogation system based on an arrayed waveguide grating (AWG) device. A lookup table with calibration data is used to improve system linearity. A reduction in the absolute value of the measurement error from 120 mustrain or 15degC to 4.8 mustrain
Grzegorz Fusiek +3 more
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Fiber Bragg Grating Sensors Interrogation System using Arrayed Waveguide Gratings Demultiplexer
Asia Communications and Photonics Conference and Exhibition, 2009A Fiber Bragg Grating(FBG)sensor interrogation system using Arrayed Waveguide Gratings(AWGs) demultiplexer is designed and studied theoretically and experimentally. By using a temperature tunable arrayed waveguide grating (AWG), the center wavelength of the FBG sensor is successfully interrogated, with the linear temperature dependence of the AWG ...
Wei Wu, Xin Liu
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Random fiber laser based on weak fiber Bragg grating array
17th International Conference on Optical Communications and Networks (ICOCN2018), 2019Weak fiber Bragg grating array has been theoretically analyzed by the transfer matrix method and coupled-mode theory. Fig.1 gives the analysis diagram of weak fiber Bragg grating array Through the mathematical operation, the simulation model of the Weak Fiber Bragg Grating Array is obtained.
zhongze wang +4 more
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The research on a novel addressing technique for fiber Bragg grating sensor array
Proceedings of the 2008 International Conference on Advanced Infocomm Technology - ICAIT '08, 2008The principle of a novel interrogation technology for fiber Bragg grating sensor system was provided, which combined the wavelength selectable technique for fiber ring laser, based on the F-P filter with the time-domain addressing technique for fiber Bragg grating array, based on a 1x4 analog electrical switch.
Ruoming Li, Youlong Yu, Wenjiang Dai
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Multicore optical fibers with arrays of bragg gratings
Nonlinear World, 2022D.V. Ryakhovskiy +2 more
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Fiber Bragg Grating Arrays in All-Solid Photonic Bandgap Fiber
2016The fiber Bragg grating arrays are inscribed into the Ge-doped cladding rods in an all-solid photonic bandgap fiber. Different resonance wavelengths and widths are observed by launching light into different rods from two reverse directions. The diverse resonance dips from different rods may have different responses to the environment changes, hence the
Tingting Han, Jingping Yang
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On-line writing identical and weak fiber Bragg grating arrays
Chinese Optics Letters, 2013We investigate the on-line writing identical fiber Bragg grating (FBG) arrays using the phase mask technique. Given the limitation of laser power, the energy density uniformity and the horizontal width of the writing spot cannot be further optimized. The results show that the FBG arrays obtained in the optimal process (drawing speed of 12 ± 0.15 m/min ...
Huiyong Guo Huiyong Guo +5 more
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Hydrogen sensing array based on weak fiber Bragg grating
SPIE Proceedings, 2015Optical fiber hydrogen sensing system based on weak fiber Bragg grating (WFBG) array deposited with palladium (Pd) film is proposed and experimentally demonstrated. For multi-point measurement, three hydrogen WFBG sensors array are weld in a single optical fiber.
Wei Bai +5 more
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