Method for tuning chirp ratio of fiber gratings without central wavelength shift

Guanxiu Liu; Dejun Feng; Maosen Zhang; Dongfang Jia

doi:10.1117/1.OE.53.12.124105

23 December 2014 Method for tuning chirp ratio of fiber gratings without central wavelength shift

Guanxiu Liu, Dejun Feng, Maosen Zhang, Dongfang Jia

Author Affiliations +

Optical Engineering, Vol. 53, Issue 12, 124105 (December 2014). https://doi.org/10.1117/1.OE.53.12.124105

Abstract

A method for tuning the chirp ratio of a fiber grating without the central wavelength shift is proposed by using a two-fixed-end compressive beam, which induces a linear strain distribution along the grating. This technique allows dynamic control of the grating’s chirp ratio by changing the displacement of the translation stage. The 3-dB bandwidth tuning range is from 6.52 to 13.5 nm when the grating is tuned in the broadening way, while the bandwidth tuning range is from 6.52 to 0.95 nm in the compressing way. The proposed method has potential applications for the dynamic dispersion compensation and the sensors of pressure and displacement, etc., by detecting the change of bandwidth information.

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Guanxiu Liu, Dejun Feng, Maosen Zhang, and Dongfang Jia "Method for tuning chirp ratio of fiber gratings without central wavelength shift," Optical Engineering 53(12), 124105 (23 December 2014). https://doi.org/10.1117/1.OE.53.12.124105

Published: 23 December 2014

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