A new eight-wavelength erbium-doped fiber laser, which utilizes linear cavity structure, was designed and experimentally authenticated. The laser was composed of two Sagnac loops: a left loop containing a fiber coupler (FC) with power ratio of 50:50 and a tilted fiber grating (TFG), and a right loop consisting of another FC, a sampled fiber grating (SFG) and three-ring-type polarization controller (PC). The TFG had many inhomogeneous peaks with maximum power differences of 3 dB and maximum modulation depths of 16 dB. Two adjacent transmission peaks in the SFG had approximately 0.3 nm spacings and maximum modulation depths of 8 dB. The two loops with TFG and SFG were jointly utilized to motivate multi-wavelength. When the PC was tuned to cause the PHB effect, 21 sorts of diverse lasing lines were achieved. All lasing lines with the OSNRs of more than 20 dB had fewer than 0.21 nm line widths.

设计了一种采用线性腔结构的新型八波长掺铒光纤激光器并进行了实验验证。激光器由两个萨格纳克环路组成：左环路包含功率比为 50:50 的光纤耦合器 (FC) 和倾斜光纤光栅 (TFG)，右环路包含另一个 FC、采样光纤光栅 (SFG) ) 和三环型偏振控制器 (PC)。TFG 有许多不均匀的峰值，最大功率差为 3 dB，最大调制深度为 16 dB。SFG 中两个相邻的传输峰值具有大约 0.3 nm 的间距和 8 dB 的最大调制深度。带有 TFG 和 SFG 的两个回路被共同用于激发多波长。当PC被调谐到产生PHB效应时，得到了21种不同的激光线。