Results 121 to 130 of about 495 (163)
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Tilted Fiber Bragg Gratings as Multi-Sensors
Optics and Photonics News, 2011The tilted fiber Bragg grating is a new kind of sensor that possesses all the advantages of well-established Bragg grating technology in addition to being able to excite cladding modes resonantly. This device opens up a multitude of opportunities for single-point sensing in hard-to-reach spaces.
Jacques Albert
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Tilted Bragg gratings in step-index polymer optical fiber
Optics Letters, 2014We report the first slightly tilted Bragg gratings photo-inscription in polymer optical fiber (POF). For this, we make use of trans-4-stilbenemethanol-doped photosensitive step-index poly(methyl methacrylate) (PMMA) POFs. Tilted fiber Bragg gratings (TFBGs) are inscribed in the near-infrared wavelength range using the scanning phase mask technique with
Xuehao Hu +2 more
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Inscription of superimposed tilted fiber Bragg gratings
Optical and Quantum Electronics, 2020This study focuses on the tilted fiber Bragg gratings. The paper describes the method of their inscription into optical fiber using the Talbot interferometer and KrF excimer laser system. The method allows precise selection of the resonant wavelengths and tilt angles of the created structures in a wide range of values.
Kirill A. Konnov +5 more
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Tilted fiber Bragg grating sensors
Laser & Photonics Reviews, 2012AbstractOptical fiber gratings have developed into a mature technology with a wide range of applications in various areas, including physical sensing for temperature, strain, acoustic waves and pressure. All of these applications rely on the perturbation of the period or refractive index of a grating inscribed in the fiber core as a transducing ...
J. Albert, L.-Y. Shao, C. Caucheteur
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Fiber Bragg Grating Tilt Meter
2014 IEEE 2nd International Conference on Emerging Electronics (ICEE), 2014In this paper, we propose a novel methodology of real time dynamic tilt monitoring through the designed and developed Fiber Bragg Grating Tilt Meter (FBGTM). Based on the volumetric water pressure exerted from inside the chamber on the diaphragm over which the FBG sensor is bonded, the tilt angle of FBGTM can be estimated.
Sharath Umesh +2 more
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Temperature-insensitive fiber Bragg grating tilt sensor
Applied Optics, 2008A temperature-insensitive optical fiber tilt sensor is presented. The sensor scheme uses a prestrained fiber Bragg grating to sense the strain, which depends on the tilt angle. To compensate for the temperature effect, materials that have different linear thermal expansion behaviors are used for implementation of the sensor body. The differentiation in
Hsuan-Jen, Chen, Likarn, Wang, W F, Liu
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Experimental characterization of tilted fiber Bragg gratings
2002 15th Optical Fiber Sensors Conference Technical Digest. OFS 2002(Cat. No.02EX533), 2003A fully experimental characterization of tilted fiber Bragg gratings has been presented showing good agreement with previously reported theoretical models. Parameters for a slanted grating such as wavelength dependence of the radiation, output angle vs. blaze angle, and spectral radiation losses are presented.
C. Jauregui +4 more
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Tilted Bragg Gratings in Integrated Optical Fiber
Photonics and Fiber Technology 2016 (ACOFT, BGPP, NP), 2016In this paper, the first successful demonstration of a short period tilted Bragg grating in integrated optical fiber is reported through the observation of resonance features in the reflection spectrum from a 4.98o tilted grating.
A. Jantzen +5 more
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Tilted Fiber Bragg Gratings for Selective Coupling in a Multicore Optical Fiber
Optical Fiber Communication Conference, 2018We have produced a device for the selective light coupling among the seven cores of a multicore optical fiber. We have used a tilted fiber Bragg grating for increasing 40dB the crosstalk between the cores.
David Barrera 0004 +2 more
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Immunoassays using tilted fiber Bragg gratings: an overview
Optical Sensing and Detection VI, 2020Biosensors are expected to provide fast, sensitive, and robust detection at low cost. Despite all these constraints which weigh on the development of emerging technologies and conception of new prototypes, the major challenge is still to carry out measurements in complex matrices and hard-to-reach environments.
Loyez, Médéric +3 more
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