Subkilohertz linewidth reduction of a DFB diode laser using self-injection locking with a fiber Bragg grating Fabry-Perot cavity

A simple and low-cost 1550 nm semiconductor laser with subkilohertz intrinsic linewidth is experimentally demonstrated. A commercial distributed feedback diode laser is self-injection locked to the resonance transmission peaks of a fiber Bragg grating Fabry-Perot cavity through a polarization-mainta...

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Bibliographic Details
Published in:Optics express 2016-07, Vol.24 (15), p.17406-17415
Main Authors: Wei, Fang, Yang, Fei, Zhang, Xi, Xu, Dan, Ding, Meng, Zhang, Li, Chen, Dijun, Cai, Haiwen, Fang, Zujie, Xijia, Gu
Format: Article
Language:English
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Summary:A simple and low-cost 1550 nm semiconductor laser with subkilohertz intrinsic linewidth is experimentally demonstrated. A commercial distributed feedback diode laser is self-injection locked to the resonance transmission peaks of a fiber Bragg grating Fabry-Perot cavity through a polarization-maintaining fiber ring with the optical path length of 4 m, with the laser frequency noise suppressed by over 70 dB in the Fourier frequency band from 5 Hz and 1 kHz. The laser features an intrinsic Lorentzian linewidth of 125 Hz as well as a relative intensity noise of
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.017406