Instrumentation, Techniques, and Measurement

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

[+] Author Affiliations
Guanxiu Liu

Shandong University, School of Information Science and Engineering, Jinan 250100, China

Dejun Feng

Shandong University, School of Information Science and Engineering, Jinan 250100, China

Maosen Zhang

Shandong University, School of Information Science and Engineering, Jinan 250100, China

Dongfang Jia

Tianjin University, College of Precision Instrument and Optoelectronics Engineering, Tianjin 300072, China

Opt. Eng. 53(12), 124105 (Dec 23, 2014). doi:10.1117/1.OE.53.12.124105
History: Received September 8, 2014; Accepted November 26, 2014
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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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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Guanxiu Liu ; Dejun Feng ; Maosen Zhang and Dongfang Jia
"Method for tuning chirp ratio of fiber gratings without central wavelength shift", Opt. Eng. 53(12), 124105 (Dec 23, 2014). ; http://dx.doi.org/10.1117/1.OE.53.12.124105


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