Research articles

Tunable fiber Bragg grating filters realized by chirp rate tuning with a cantilever beam

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  • 1.Institute of Optoelectronic Technology, China Jiliang University, Hangzhou 310018, China; 2.Network Technology Research Centre, Nanyang Technological University, Singapore 639798, Singapore;

Published date: 05 Mar 2010

Abstract

An efficient scheme to change the chirp rate of a fiber Bragg grating (FBG) has been developed based on a specially-designed cantilever beam with the beam-bending method. It allows, to date, the largest tuning range of 36 nm in reflection bandwidth of a chirped-FBG (CFBG) while keeping the center wavelength nearly fixed during the tuning process. Using this method, bandwidth-tunable fiber grating filters with tunable chromatic dispersion or differential group delay have been demonstrated. Channel spacing-tunable multi-wavelength filters based on both sampled- and superimposed-CFBGs have also been realized. Moreover, tuning of the bandwidth and channel spacing is continuous with this scheme that makes the achieved devices more flexible.

Cite this article

Xinyong DONG, Perry Ping SHUM, . Tunable fiber Bragg grating filters realized by chirp rate tuning with a cantilever beam[J]. Frontiers of Optoelectronics, 2010 , 3(1) : 71 -77 . DOI: 10.1007/s12200-009-0090-0

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