Random Raman fiber laser based on a twin-core fiber with FBGs inscribed by femtosecond radiation.

Narrowband Raman lasing in a polarization-maintaining two-core fiber (TCF) is demonstrated. Femtosecond point-by-point inscription of fiber Bragg gratings (FBGs) in individual cores produces a half-open cavity with random distributed feedback. The laser linewidth in the cavity with a single FBG inscribed in one core of the TCF reduced by ∼2  times with respect to the cavity with a fiber loop mirror. It is shown that the inscription of two FBGs in different cores leads to the formation of a Michelson-type interferometer, leading to the modulation of generation spectra near threshold. This technique offers new possibilities for spectral filtering or multi-wavelength generation.

[1]  E. I. Dontsova,et al.  Frequency doubling of Raman fiber lasers with random distributed feedback. , 2016, Optics letters.

[2]  H. Zhang,et al.  Efficient Raman fiber laser based on random Rayleigh distributed feedback with record high power , 2014 .

[3]  Pu Zhou,et al.  More than 400  W random fiber laser with excellent beam quality. , 2017, Optics Letters.

[4]  Lei Zhang,et al.  Nearly-octave wavelength tuning of a continuous wave fiber laser , 2017, Scientific Reports.

[5]  S. Babin,et al.  Random distributed feedback fibre lasers , 2014 .

[6]  Zejin Liu,et al.  Short cavity-length random fiber laser with record power and ultrahigh efficiency. , 2016, Optics letters.

[7]  S. Turitsyn,et al.  Wave kinetics of random fibre lasers , 2015, Nature Communications.

[8]  Ekaterina A. Zlobina,et al.  High-order random Raman lasing in a PM fiber with ultimate efficiency and narrow bandwidth , 2016, Scientific Reports.

[9]  Sergey A. Babin,et al.  High-efficiency generation in a short random fiber laser , 2014 .

[10]  A. Wolf,et al.  A study of bending effect on the femtosecond-pulse inscribed fiber Bragg gratings in a dual-core fiber , 2018, Optical Fiber Technology.

[11]  Zach DeVito,et al.  Opt , 2017 .

[12]  Xiaojun Xu,et al.  Tapered-fiber-enabled high-power, high-spectral-purity random fiber lasing. , 2018, Optics letters.

[13]  D. Churkin,et al.  Narrow-band generation in random distributed feedback fiber laser. , 2013, Optics express.

[14]  S. Kablukov,et al.  Linearly polarized random fiber laser with ultimate efficiency. , 2015, Optics letters.

[15]  Yaliang Li,et al.  SCI , 2021, Proceedings of the 30th ACM International Conference on Information & Knowledge Management.

[16]  Wei Li Zhang,et al.  Tunable Multi-Wavelength Fiber Laser Based on Random Rayleigh Back-Scattering , 2013, IEEE Photonics Technology Letters.

[17]  Sergei K. Turitsyn,et al.  Random distributed feedback fiber laser , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[18]  A. E. Budarnykh,et al.  Raman fiber laser with random distributed feedback based on a twin-core fiber. , 2018, Optics letters.

[19]  A. Wolf,et al.  Femtosecond point-by-point inscription of Bragg gratings by drawing a coated fiber through ferrule. , 2016, Optics express.

[20]  S. Babin,et al.  Effect of Rayleigh-scattering distributed feedback on multiwavelength Raman fiber laser generation. , 2011, Optics letters.

[21]  Diederik S. Wiersma,et al.  The physics and applications of random lasers , 2008 .

[22]  S. Babin,et al.  Power optimization of random distributed feedback fiber lasers. , 2012, Optics express.

[23]  Sergei K. Turitsyn,et al.  Tunable random fiber laser , 2011 .