消光比
光学
偏振控制器
干涉测量
光放大器
激光阈值
物理
极化(电化学)
材料科学
激光器
萨格纳克效应
光电子学
光纤激光器
波长
化学
物理化学
作者
Abdul Hadi Sulaiman,Allen Paul David,Aiman Ismail,Nadiah Nadhirah Abu Hassan,Fairuz Abdullah,M. Z. Jamaludin,Nelidya Md Yusoff
摘要
We demonstrate a Sagnac-interferometer-based multiwavelength fiber laser with an intensity-dependent loss (IDL) mechanism in the L-band region using a semiconductor optical amplifier (SOA) as the gain medium. The IDL mechanism flattens and stabilizes the multiwavelength spectrum. We also investigate the effect of rotation angles of polarization controllers (PCs) at different polarization devices on multiwavelength performance. At best settings, 31 lasing lines within 3 dB uniformity were generated with an extinction ratio (ER) of 17 dB. Adjusting the half-wave plate of PC1 and PC2 from 0° to 90° shifted the multiwavelength output by 0.01 nm and 0.072 nm, respectively. PC2 adjustment also affects the multiwavelength flatness as compared to PC1. Furthermore, the number of lasing lines and the ER were directly influenced by the SOA current.
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