Single-wavelength ring-cavity Brillouin-Raman fiber laser

Abstract

We experimentally demonstrate a ring-cavity, single-wavelength Brillouin-Raman fiber laser. An 11-km long dispersion compensating fiber was used as the medium for the Raman as well as the Brillouin amplification. A threshold power of 27 mW was recorded to get the Brillouin-Stokes line at 1455 nm pump wavelength. At an injected Brillouin pump power of 2 mW, while the Raman pump unit was fixed at a power of 296 mW, the single-wavelength Brillouin-Raman fiber laser can be tuned from 1520 nm to 1580 nm without any self-lasing cavity modes in the laser system. The BrillouinStokes line has a 3-dB power fluctuation within 26 nm from 1542 nm to 1568 nm.

OSNR enhancement utilizing large effective area fiber in a multiwavelength Brillouin-Raman fiber laser

“…2, by increasing Raman pump power (RPP), the peak power of transmitted BP increases. In the range of RPP from 100 to 600 mW, the laser structure acts as single wavelength Brillouin fiber laser, in which the higher order Stokes line is not generated yet as reported in [18]. After reaching its power saturation, the first Brillouin Stokes line, which is back scattered in reverse direction by frequency shifted Brillouin scattering effect, is backscattered once more by Rayleigh and Brillouin effects.…”

Improvement of comb lines quality employing double-pass architecture in Brillouin-Raman laser

“…Therefore additional gain from active gain medium such as erbium is utilized to compensate the cavity loss [4][5][6]. Alternatively, since the Brillouin gain is proportional to the fiber length, this long waveguide can also be utilized to generate other nonlinear effect of stimulated Raman scattering (SRS) [7]. When a narrow bandwidth Brillouin gain combines with a broad bandwidth Raman gain, hundreds of channels can be generated within the Raman gain bandwidth.…”

All-optical wavelength conversion based on degenerate four-wave mixing in Raman ring laser

“…Nonlinear effects in optical fibers have been widely utilized for various applications including Raman and Brillouin optical amplifiers [1,2], fiber lasers [3][4][5][6][7][8], optical switching [9], and wavelength conversions [10,11]. In particular, the wavelength conversion is an interesting application for optical communication networks.…”