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

Fang Wei | Zendy; Fei Yang | Zendy; Xi Zhang | Zendy; Dan Xu | Zendy; Meng Ding | Zendy; Li Zhang | Zendy; Dijun Chen | Zendy; Haiwen Cai | Zendy; Zujie Fang | Zendy; Gu Xijia | Zendy

Open Access

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

Author(s) -

Fang Wei,

Fei Yang,

Xi Zhang,

Dan Xu,

Meng Ding,

Li Zhang,

Dijun Chen,

Haiwen Cai,

Zujie Fang,

Gu Xijia

Publication year - 2016

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.017406

Subject(s) - laser linewidth , optics , materials science , relative intensity noise , fiber bragg grating , distributed feedback laser , fiber laser , semiconductor laser theory , laser , laser diode , optoelectronics , injection seeder , diode , physics

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 <-142 dBc/Hz above 2 MHz, and provides over 0.8 nm quasi-continuous tunability, which is suitable for advanced applications requiring a narrow linewidth laser with ultralow frequency noise.

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