设计了一种宽带可调谐多波长布里渊/铒光纤光源。利用光纤中的受激布里渊散射效应产生反方向传输的斯托克斯信号将光信号返回线型腔中，消除了腔内自激模的影响，使光源的调谐带宽仅由掺铒光纤放大器的带宽和布里渊抽运信号的调谐范围决定。布里渊抽运信号进入布里渊增益介质之前经过掺铒光纤放大器的两次放大，有效降低了布里渊增益的抽运阈值。该光源实现了1530～1570 nm之间40 nm可调谐范围的输出。在布里渊抽运信号功率2 mW，1480 nm抽运源抽运功率110 mW情况下，在1540～1566 nm范围内，获得了波长间隔0.084 nm的5个波长的输出。

A widely tunable multiwavelength Brillouin/erbium fiber source is experimentally demonstrated. The Brillouin Stokes signals return back to the linear cavity owing to the effect of stimulated Brillouin scattering. The influence of the self-lasing modes is effectively eliminated because of the weak reflectivity. The tuning range of the fiber source is only limited by the bandwidth of erbium-doped fiber amplifier and the tuning range of Brillouin pump signal. The pump threshold of Brillouin gain is effectively reduced by the double-pass Brillouin pump signal amplification. The fiber source provides a tuning range of 40 nm (1530～1570 nm). At the Brillouin pump power of 2 mW and the 1480 nm pump power of 110 mW, 5 output channels with 0.084 nm channel spacing from 1540 to 1566 nm are achieved.