140-Hz Narrow-Linewidth Brillouin/Erbium- Ytterbium Fiber Laser

We demonstrate an ultra-narrow-linewidth Brillouin/Erbium-Ytterbium co-doped fiber ring laser, which uses a length of 80-cm Erbium-Ytterbium co-doped fiber as both the Brillouin gain and linear gain media. The 976-nm pump threshold is only 80 mW when the Brillouin pump power is 20 mW. The output power of this laser reaches about 200 mW. The laser linewidth is as narrow as 140 Hz. The relative intensity noise of the fiber laser is −145 dB/Hz. The phase noise at 1 kHz is as low as to −107 dB re rad/Hz1/2 (1-m optical path difference). Moreover, the 140-Hz-linewidth Brillouin laser light is transferred from a 2-MHz-linewidth Brillouin pump light. This fiber laser presents outstanding linewidth-narrowing characteristic. It presents many potential applications in coherent communications, optical fiber sensors, and etc.

[1]  Z. Meng,et al.  The Echo-Induced Influence on the Frequency-Modulating Calibration of the 3×3 Coupler-Based Michelson Interferometer and Its Suppression , 2021, Journal of Lightwave Technology.

[2]  Zhenda Xie,et al.  Narrow-linewidth single-polarization fiber laser using non-polarization optics. , 2021, Optics letters.

[3]  Z. Meng,et al.  SNR dependence of measurement stability of heterodyne phase-sensitive optical time-domain reflectometry. , 2020, Applied optics.

[4]  Zhou Meng,et al.  Ultra-narrow linewidth measurement based on Voigt profile fitting. , 2015, Optics express.

[5]  Zhou Meng,et al.  Low-noise, single-frequency, single-polarization Brillouin/erbium fiber laser. , 2013, Optics letters.

[6]  Z. Meng,et al.  Low-Threshold, Single-Mode, Compact Brillouin/Erbium Fiber Ring Laser , 2013, Journal of Lightwave Technology.

[7]  Wei Chen,et al.  Characteristics of a Brillouin-erbium fiber laser based on Brillouin pump preamplification. , 2012, Applied optics.

[8]  S. Harun,et al.  Brillouin Erbium Ytterbium Fiber Laser , 2008, International Conference on Computer and Communication Engineering.

[9]  Alexis Debut,et al.  Linewidth narrowing in Brillouin lasers: Theoretical analysis , 2000 .

[10]  Mark P. Andrews,et al.  Ion-exchanged Er/Yb phosphate glass waveguide amplifiers and lasers , 1998, Photonics West.

[11]  G. Cowle,et al.  Hybrid Brillouin/erbium fiber laser. , 1996, Optics letters.

[12]  K. Iwatsuki,et al.  A finesse-enhanced Er-doped-fiber ring resonator , 1991 .

[13]  S. P. Smith,et al.  Narrow-linewidth stimulated Brillouin fiber laser and applications. , 1991, Optics letters.

[14]  L. B. Mercer,et al.  1/f frequency noise effects on self-heterodyne linewidth measurements , 1990 .

[15]  陈伟,et al.  Phase noise characteristics of narrow-linewidth fiber laser and laser diode in unbalanced interferometers , 2013 .

[16]  S. Harun,et al.  Compact Brillouin-erbium fiber laser. , 2009, Optics letters.