Frontiers of Optoelectronics, Volume. 3, Issue 1, -1(2010)
Tunable fiber Bragg grating filters realized by chirp rate tuning with a cantilever beam
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.
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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): -1
Received: Aug. 1, 2009
Accepted: Nov. 5, 2009
Published Online: Sep. 20, 2012
The Author Email: DONG Xinyong (xydong@cjlu.edu.cn)