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10 February 2017 Recent advances in tapered fiber Bragg grating technology and applications
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Proceedings Volume 10325, Optical Fibers and Their Applications 2017; 103250K (2017)
Event: 17th Conference on Optical Fibres and Their Applications, 2017, Supraśl, Poland, Poland
A concept, technology and applications of novel linearly chirped Bragg gratings written in fused tapered optical fiber are presented. The novelty of proposed structure is based on the synthesis of chirps resulting from both a fused taper profile and a linearly chirped fringe pattern of the induced refractive index changes within the fiber core. Depending on the orientation of the optical fiber taper relative to the variable-pitch phase mask during UV exposure, tapered and linearly chirped fiber Bragg gratings (TCFBG) with resultant co-directional or counter-directional chirps can achieved and thus their spectral responses can be widely tailored. Moreover the detailed numerical analysis of spectral shaping in TCFBGs is presented. Strain sensing applications of TCFBGs written in both co-direction and counter-directional chirp configurations are proposed and their advantages over typical tapered (uniform) FBG based sensors are highlighted.
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Tomasz Osuch "Recent advances in tapered fiber Bragg grating technology and applications", Proc. SPIE 10325, Optical Fibers and Their Applications 2017, 103250K (10 February 2017);

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