Multi-Wavelength Brillouin Fiber Laser With Triple Brillouin Frequency Spacing

Abstract

We demonstrate a triple Brillouin frequency spacing, multi-wavelength Brillouin laser combined with two cavities: a single Brillouin frequency spacing cavity and a double Brillouin frequency spacing cavity. In this simple structure, the optimization of multi-wavelength lasing is done with proper adjustments of Brillouin pump (BP) power and 980-nm pump power. When setting the BP power to 3-dBm and 980-nm pump power to 27.78 dBm, up to ten channels with frequency spacing of 0.26 nm are generated. The output wavelength can be tuned in a wide range of 45 nm, from 1525 to 1570 nm. We also compared and analyzed this scheme under the condition of single linear cavity 1 and double ring cavity 2. The proposed multiwavelength laser has the potential applications in the areas of space optical communication and optical communications and microwave signal source.Index Terms-Brillouin fiber laser, stimulated Brillouin scattering, triple Brillouin frequency shift.

Generation of efficient 33 GHz optical combs using cascaded stimulated Brillouin scattering effects in optical fiber

“…All generated Brillouin-Stokes signals exhibited high peak power of greater than 1 mW per signal and their optical signal to noise ratio of greater than 40 dB. The demonstrated laser provides improved channels output power, high OSNRs and shorter Brillouin gain medium used than previously reported [22,23].…”

“…The output channels exhibit high output power and high optical signal-to-noise ratios (OSNRs). The demonstrated laser provides improved channels output power and high OSNRs than previously reported [22,23].…”

“…Therefore, a further improved structure of multi-wavelength Brillouin fiber lasers is needed which can increase the current channel spacing to ~33 GHz (~0.25 nm) as a means of employing the laser source for several applications. To date, few published works on the development of MBEFL with ~33 GHz wavelength spacing have been reported [22,23]. A laser structure for generating triple-Brillouin frequency spacing has recently been realized by combining two ring cavities [22].…”

“…To date, few published works on the development of MBEFL with ~33 GHz wavelength spacing have been reported [22,23]. A laser structure for generating triple-Brillouin frequency spacing has recently been realized by combining two ring cavities [22]. A low output power of Stokes signals (below 0 dBm) with long single-mode fiber (SMF) lengths of 50 km and high pump power of 27.78 dBm (600 mW), were used to generate triple-Brillouin-Stokes signals.…”

Tunable self-excited multiwavelength Brillouin-erbium fiber laser based on a variable temperature sensor

“…It is easy to achieve SBS based on the nonlinear interaction with the participation of acoustic phonons between the pump and Stokes field [7]. Once the BP (Brillouin pump) light reaches the Brillouin threshold [8], resulting in a Brillouin comb generation at a frequency shift of approximately 10 GHz, multiwavelength Brillouin fiber laser is achieved [9,10]. However, the use of the BP increases the cost of the multiwavelength fiber laser system, especially the requirement for high power and a broadband tunable wavelength BP.…”