Author： Xia L. Shum P. Cheng T.H.
Publisher： Springer Publishing Company
ISSN： 0946-2171
Source： Applied Physics B, Vol.86, Iss.1, 2007-01, pp. : 61-64
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Abstract
Two -phase shifts are introduced in a uniform fiber Bragg grating (FBG) structure and a dual-transmission-band opens in the stopband of FBG. When incorporating this kind of FBG filter in a fiber ring cavity with a semiconductor optical amplifier (SOA) acted as gain medium, a stable dual-wavelength lasing with wavelength spacing of 0.032, 0.052 and 0.068 nm is achieved, respectively. Therefore, the laser output is heterodyned on a photodetector and desired microwave frequencies of 3.15, 6.16 and 8.08 GHz are generated.
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