超高速锁模激光二极管纵向模式的线宽和相对强度噪声测量

Linewidth and relative intensity noise measurements of longitudinal modes in ultrahigh-speed mode-locked laser diodes.

作者信息

Haneda Kentaro, Yoshida Masato, Nakazawa Masataka, Yokoyama Hiroyuki, Ogawa Yoh

机构信息

Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi-ken 980-8577, Japan.

出版信息

Opt Lett. 2005 May 1;30(9):1000-2. doi: 10.1364/ol.30.001000.

DOI:10.1364/ol.30.001000

PMID:15906983

Abstract

The longitudinal linewidth and corresponding relative intensity noise (RIN) of 10- and 40-GHz mode-locked laser diodes are measured for the first time to our knowledge. It is shown that the cavity Q value is a dominant parameter of the linewidth. It is also shown that the linewidth of the individual modes is almost constant. This means that the phase noise of each mode is almost the same in the mode-locked condition. The RIN value is larger for modes that are distant from the center longitudinal mode. This mode dependence is a consequence of the mode partition noise.

摘要

据我们所知，首次测量了10 GHz和40 GHz锁模激光二极管的纵向线宽及相应的相对强度噪声（RIN）。结果表明，腔Q值是线宽的主导参数。还表明，各个模式的线宽几乎是恒定的。这意味着在锁模条件下，每个模式的相位噪声几乎相同。远离中心纵向模式的模式的RIN值更大。这种模式依赖性是模式分配噪声的结果。