波长间隔为20 GHz的多波长布里渊光纤激光器

Multi-wavelength Brillouin fiber laser with wavelength spacing of 20 GHz

设计了一种基于环形腔的双倍布里渊频移间隔的可调谐光纤激光器实验装置。该实验装置由一个3 d B耦合器、一台可调谐激光源（TLS）、一台980 nm泵浦和一个实现双倍布里渊频移环形腔构成。该结构耦合输出偶数阶Stokes光,从而实现间隔约为20 GHz或0.16 nm的多波长输出。并研究了980 nm泵浦光和BP光功率对输出偶数阶Stokes光波数的影响。当980 nm泵浦功率固定为26 d Bm（400 m W）,BP功率为10 d Bm时,获得了间隔为0.16 nm的11个稳定激光输出以及36 nm（1530~1566 nm）的可调谐范围。

A tunable multi-wavelength Brillouin fiber laser with double Brillouin frequency spacing based on ring cavityis demonstrated. The Brillouin fiber laser consists of a 3 dB-coupler,a tunable laser（TLS） ,a 980 nm pump laser diode,and a ring cavity to generate double-Brillouin frequency spacing. The multi-wavelength optical signal with about20 GHz or 0. 16 nm frequency spacing is achieved by removing the even-order Stokes lines. The effects of BP opticalpower and 980 nm pump power on the number of Stokes are studied. The power of 980 nm pump laser and BP arefixed at 26 dBm （400 mW ）and 10 dBm, 11 stable output channels with 0. 16 nm spacing and the tuning range from1530 nm to 1566nm are obtained.