All-optical noise reduction of fiber laser via intracavity SOA structure

We have designed a unique intracavity semiconductor optical amplifier (SOA) structure to suppress the relative intensity noise (RIN) for a fiber DFB laser. By exploiting the gain saturation effect of the SOA, a maximum noise suppression of 30 dB around the relaxation oscillation frequency is achieve...

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Bibliographic Details
Published in:Applied optics. Optical technology and biomedical optics 2016-10, Vol.55 (29), p.8185
Main Authors: Ying, Kang, Chen, Dijun, Pan, Zhengqing, Zhang, Xi, Cai, Haiwen, Qu, Ronghui
Format: Article
Language:English
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Summary:We have designed a unique intracavity semiconductor optical amplifier (SOA) structure to suppress the relative intensity noise (RIN) for a fiber DFB laser. By exploiting the gain saturation effect of the SOA, a maximum noise suppression of 30 dB around the relaxation oscillation frequency is achieved, and the whole resonance relaxation oscillation peak completely disappears. Moreover, via a specially designed intracavity SOA structure, the optical intensity inside the SOA will be in a balanced state via the oscillation in the laser cavity, and the frequency noise of the laser will not be degraded with the SOA.
ISSN:2155-3165
DOI:10.1364/AO.55.008185