Switchable wide-band multi-wavelength fiber laser via Brillouin random lasing resonance

Spectral Manipulations of Random Fiber Lasers: Principles, Characteristics, and Applications

“…In the multi-wavelength BRFL, via shifting the pump wavelength, a 30 nm wavelength tunable range was validated. [59] Rare-earth-doped gain (e.g., erbium- [60,[195][196][197] and ytterbiumdoped gain [198] ) can also be utilized to cooperate with the SBS process for multi-wavelength random fiber lasing generation. For the multi-wavelength Brillouin-erbium random fiber laser, as depicted in Figure 11b, with the pump power increasing, the intensity of the random fiber lasing is enhanced and the stronger four-wave mixing effect makes the number increment of the Stokes and anti-Stokes waves on both sides of the lasing spectrum.…”

“…[60] In addition, by utilizing a sub-fiber loop and a high nonlinear fiber-based main fiber structure, a switchable wideband multi-wavelength Brillouin-erbium random fiber laser was demonstrated with 19 and 281 backward and forward Brillouin Stokes lines, respectively. [197] In addition, with the YDF and TrueWave fiber, a six-channel and ≈0.06-nm wavelength-spacing multi-wavelength Brillouin-ytterbium random fiber laser has been realized, which extends the multi-wavelength RFL to 1 μm band. [198] Furthermore, combining the narrow-band Brillouin linewidth and the broadband Raman gain, the multi-wavelength Brillouin-Raman random fiber lasers in the C-band, [58,199,200] O-band, [201] and U-band [202] possess unique advantages such as large emission line number, flat amplitude bandwidth, flat OSNR, high stability, etc.…”

“…[ 60 ] In addition, by utilizing a sub‐fiber loop and a high nonlinear fiber‐based main fiber structure, a switchable wide‐band multi‐wavelength Brillouin–erbium random fiber laser was demonstrated with 19 and 281 backward and forward Brillouin Stokes lines, respectively. [ 197 ] In addition, with the YDF and TrueWave fiber, a six‐channel and ≈0.06‐nm wavelength‐spacing multi‐wavelength Brillouin–ytterbium random fiber laser has been realized, which extends the multi‐wavelength RFL to 1 µm band. [ 198 ]…”

Multi-wavelength passively Q-switched laser with Co2+:ZnSe thin film coated microsphere

“…As one of the important members of the fiber laser family, the multi-wavelength fiber laser (MWFL) plays an irreplaceable role in wavelength-division multiplexed (WDM) communication systems, fiber sensing, optical signal processing, spectral analysis, high-resolution spectroscopy and photonic microwave technology [31][32][33][34]. Zhang et al achieved multiwavelength generation at 1.3 µm waveband in random fiber laser through four orders cascaded stimulated Raman scattering for the first time [35].…”