与法布里-珀罗激光二极管相互注入锁定的再生半导体光放大器的光谱特性。

Spectral characteristics of a regenerative semiconductor optical amplifier mutually injection locked with a Fabry-Perot laser diode.

作者信息

Lin Gong-Ru, Hsueh Pai-Shen

机构信息

Institute of Electro-Optical Engineering, National Chiao Tung University, 1001, Ta Hsueh Road, Hsinchu, Taiwan 300, China.

出版信息

Appl Opt. 2004 Jan 1;43(1):153-9. doi: 10.1364/ao.43.000153.

DOI:10.1364/ao.43.000153

PMID:14714657

Abstract

The anomalous injection locking of a traveling-wave semiconductor optical amplifier (SOA) and a fiber-pigtailed Fabry-Perot laser diode (FPLD) linked with single-mode and improved side-mode suppression ratio output is demonstrated. We achieve this injection locking by driving the FPLD slightly below threshold and by feedback injecting the FPLD with fractional output of a closed-loop SOA. The SOA-FPLD link lases in a single FPLD longitudinal mode with a reduced linewidth of 0.013 nm and a maximum side-mode-suppressing ratio of 39.7 dB. A precise 3-dB linewidth of 45-50 MHz is also observed from the self-homodyne mode-beating spectrum. The optimized feedback-injecting power for the FPLD is approximately 2% of the SOA-FPLD linked output power of >400 microW. The variations in output power and in peak wavelength are not more than 0.54% and 0.06%, respectively. The injection-locked SOA-FPLD link is insensitive to the temperature fluctuation within +/- 0.25 degrees C.

摘要

展示了行波半导体光放大器（SOA）与尾纤法布里-珀罗激光二极管（FPLD）的异常注入锁定，该组合通过单模连接并具有改善的边模抑制比输出。我们通过将FPLD驱动到略低于阈值，并通过闭环SOA的部分输出对FPLD进行反馈注入来实现这种注入锁定。SOA - FPLD链路以单个FPLD纵向模式激射，线宽减小至0.013 nm，最大边模抑制比为39.7 dB。从自外差模式拍频光谱中还观察到精确的3 dB线宽为45 - 50 MHz。FPLD的优化反馈注入功率约为SOA - FPLD链路输出功率>400微瓦的2%。输出功率和峰值波长的变化分别不超过0.54%和0.06%。注入锁定的SOA - FPLD链路对+/- 0.25摄氏度范围内的温度波动不敏感。