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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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【期刊论文】A Novel Demodulation Scheme for Fiber Bragg Grating Sensor System
余有龙, Youlong Yu and Hongxia Zhao
IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 17, NO.1, JANUARY 2005,-0001,():
-1年11月30日
Abstract-A novel fiber Bragg grating (FBG) wavelength demodulation scheme based on a compound interference configuration is introduced. This scheme measures the strain-induced wavelength-shift of the FBG in terms of phase-shift signal. The sensing resolution and sensitivity were demonstrated to be 6.2 n and 1.59, respectively, which match the theoretical value of 1.61 very well.
Index Terms-Compound interference, fiber Bragg grating (, FBG), , fiber optics sensor, interferometric demodulation.,
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