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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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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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Journal of Lightwave Technology, 1997
We review the recent developments in the area of optical fiber grating sensors, including quasi-distributed strain sensing using Bragg gratings, systems based on chirped gratings, intragrating sensing concepts, long period-based grating sensors, fiber grating laser-based systems, and interferometric sensor systems based on grating reflectors.
A.D. Kersey +7 more
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We review the recent developments in the area of optical fiber grating sensors, including quasi-distributed strain sensing using Bragg gratings, systems based on chirped gratings, intragrating sensing concepts, long period-based grating sensors, fiber grating laser-based systems, and interferometric sensor systems based on grating reflectors.
A.D. Kersey +7 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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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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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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Optics and Lasers in Engineering, 1999
Abstract The period of in-fiber grating can be changed due to the change of pressure or temperature that the in-fiber grating bears. The reflecting wavelength of in-fiber grating will shift as its period changes. This characteristic trait of in-fiber grating can render it to be used as a sensor element to detect pressure or temperature. The key issue
Shulian Zhang +3 more
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Abstract The period of in-fiber grating can be changed due to the change of pressure or temperature that the in-fiber grating bears. The reflecting wavelength of in-fiber grating will shift as its period changes. This characteristic trait of in-fiber grating can render it to be used as a sensor element to detect pressure or temperature. The key issue
Shulian Zhang +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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2006 Digest of the LEOS Summer Topical Meetings, 2006
Examples of adiabatic modification of optical fiber parameters while maintaining single-mode propagation are discussed in the paper. It is found that adiabatic variation of polarization of fiber mode enables efficient coupling of a PM fiber supporting linearly polarized modes and a chiral fiber supporting circularly or elliptically polarized modes.
V.I. Kopp +6 more
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Examples of adiabatic modification of optical fiber parameters while maintaining single-mode propagation are discussed in the paper. It is found that adiabatic variation of polarization of fiber mode enables efficient coupling of a PM fiber supporting linearly polarized modes and a chiral fiber supporting circularly or elliptically polarized modes.
V.I. Kopp +6 more
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