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【期刊论文】Chirp-Free Tuning of Fiber Bragg Grating Using a Cantilever Beam
余有龙, Youlong YU, Hwayaw TAM, Shuwei GENGl, Muhtesem Suleyman DEMOKAN, Zhiguo LIU and Wenghong CHUNG
Jpn. J. Appl. Phys. Vol. 38 (1999) Pt. 2, No.9A/B,-0001,():
-1年11月30日
A new approach for tuning the wavelength of a fiber Bragg grating without chirping is demonstrated. Tuning is achieved by bending a triangular cantilever beam with the grating was epoxied on its surface. The isosceles triangle was firmly fixed at its base and bending was realised by exerting a force to its vertex. Chirp-free tuning of a fiber Bragg grating over a wavelength range of 4.52nm is demonstrated. Using a correction index of 0.7, the experimental results are in good agreement with thetheoretical values.
fiber, Bragg grating, linearly tuning, chirp-free, cantilever beam, spectral width
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余有龙, Youlong Yu, and Hwayaw Tam
CHINESE OPTICS LETTERSlV01. 1, No.5 May 20, 2003,-0001,():
-1年11月30日
Heat treatment with the presence of hydrogen (H2) that react with GeE' centers (Ge) at high tern perature will weaken the refractive index modulation of grating fabricated in hydrogen loaded normal germanosilicate fiber. Pre. annealing treatment of the above fiber was demonstrated to be able to enhance the grating's thermal stability effectively.0.37-nm blue-shift of the reflected Bragg wavelength was ob-served.
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