Results 161 to 170 of about 1,181 (214)
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Array of grating–fiber couplers
Optics Letters, 1990Along a single-mode fiber a number M of grating-fiber couplers are fabricated at equal spacings L(0). The fiber is coiled so that the couplers lie side by side, forming a planar optical antenna array. With varying optical frequency the resulting radiation lobes sweep slowly along the meridional direction but fast along the orthogonal azimuthal ...
M, Zürn, R, Ulrich
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Optics and Photonics News, 2022
The mode control enabled by specialized gratings allows simultaneous sensing of multiple parameters in a single fiber strand—a potential game-changer.
Christophe Caucheteur +2 more
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The mode control enabled by specialized gratings allows simultaneous sensing of multiple parameters in a single fiber strand—a potential game-changer.
Christophe Caucheteur +2 more
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Proceedings of the 2008 International Conference on Advanced Infocomm Technology - ICAIT '08, 2008
Fiber grating laser sensors have attracted considerable interests because they not only possess advantages of passive fiber grating sensors, such as compact size, inherent self-referencing capability, and multiplexing capability, but also offer higher signal-to-noise ratio.
Bai-ou Guan, Yang Zhang, Hwa-Yaw Tam
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Fiber grating laser sensors have attracted considerable interests because they not only possess advantages of passive fiber grating sensors, such as compact size, inherent self-referencing capability, and multiplexing capability, but also offer higher signal-to-noise ratio.
Bai-ou Guan, Yang Zhang, Hwa-Yaw Tam
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Fiber sensors based on fiber gratings
2013 6th IEEE/International Conference on Advanced Infocomm Technology (ICAIT), 2013In this paper, we present two different types of pressure sensors including a high-sensitivity lateral pressure sensor and a temperature-independent differential pressure sensor by using fiber Bragg gratings to be encapsulated in a polymer-half-filled metal cylinder.
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2007 9th European Conference on Radiation and Its Effects on Components and Systems, 2007
The radiation-induced Bragg wavelength shift (BWS) was measured with type I gratings made of 12 fibers with very different composition, i.e. of fibers with an extremely different radiation-induced attenuation. With two of the fibers fabrication parameters like laser intensity, hydrogen loading, and annealing conditions after grating inscription were ...
Henning Henschel +4 more
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The radiation-induced Bragg wavelength shift (BWS) was measured with type I gratings made of 12 fibers with very different composition, i.e. of fibers with an extremely different radiation-induced attenuation. With two of the fibers fabrication parameters like laser intensity, hydrogen loading, and annealing conditions after grating inscription were ...
Henning Henschel +4 more
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Analysis and applications of fiber Bragg gratings
2018 26th Signal Processing and Communications Applications Conference (SIU), 2018In this paper, one of the basic elements in optical communications systems, fiber Bragg gratings, were investigated and data transmission in optical communications systems using fiber Bragg gratings was analyzed with the help of the OptiSystem 7.0 simulation program.
Alkocak, Suleyman +1 more
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Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals, 1997
Long period fiber gratings that couple light from guided core modes to non-guided cladding modes provide a means of introducing wavelength dependent losses in optical fiber systems.1 As a result, these in-fiber devices have found use as gain-equalizers in broadband optical fiber amplifiers,2 as band-rejection filters in high-power cascaded Raman fiber ...
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Long period fiber gratings that couple light from guided core modes to non-guided cladding modes provide a means of introducing wavelength dependent losses in optical fiber systems.1 As a result, these in-fiber devices have found use as gain-equalizers in broadband optical fiber amplifiers,2 as band-rejection filters in high-power cascaded Raman fiber ...
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Interrogation Techniques for Fiber Grating Sensors and the Theory of Fiber Gratings
2002That refractive index variation patterns (i.e., gratings) can be formed in optical fibers was discovered and reported by Hill et al. in 1978 [1]. After Meltz et al. devised a controllable and effective method for fabricating the fiber gratings by side-illuminating optical fibers with a UV laser [2], intensive studies on the fabrication and application ...
Byoungho Lee, Yoonchan Jeong
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The fiber anemometer based on fiber gratings
2018 IEEE International Conference on Applied System Invention (ICASI), 2018A new fiber anemometer based on fiber gratings is experimentally demonstrated for simultaneously detecting the wind-speed and -direction. The two gratings separated with 90° are fixed on the stainless steel pipe driven by the rotating disc for measuring the wind direction.
Chuan-Ying Huang +3 more
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SPIE Proceedings, 1990
The fabrication and characteristics of a variety of single-mode fibre Bragg reflection gratings are discussed. By simple modifications to the fabrication process fibre gratings can be made with very different characteristics ranging from very narrowband resonators with a 0.04nm bandwidth to broadband reflectors with a 17nm bandwidth.
C. M. Ragdale, D. C. Reid, I. Bennion
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The fabrication and characteristics of a variety of single-mode fibre Bragg reflection gratings are discussed. By simple modifications to the fabrication process fibre gratings can be made with very different characteristics ranging from very narrowband resonators with a 0.04nm bandwidth to broadband reflectors with a 17nm bandwidth.
C. M. Ragdale, D. C. Reid, I. Bennion
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