Improvement of interference fringes of a laser diode interferometer by controlling chaos with sinusoidally modulated injection

被引：3
|
作者：
Watanabe, N
Karaki, K
机构：
[1] Department of Basic Research, Olympus Optical Corporation Ltd., Hachiôji, Tokyo, 192
来源：
OPTICS LETTERS | 1996年 / 21卷 / 16期
关键词：
D O I：
10.1364/OL.21.001256
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Interference fringes of a laser diode Michelson interferometer are distorted by the external reflection of light to the laser diode. We demonstrate by a numerical model that one can stabilize the interference-fringes by controlling chaos with a sinusoidal modulation of the injection current. We optimized the modulation frequency by referring to an AM power spectrum of the intrinsic fluctuation of a compound-cavity laser diode output and optimized the modulation depth by referring to a bifurcation diagram plotted against modulation depth. The controlled system with optimally tuned sinusoidal modulation is stable with changes in external power reflection. A small perturbation of dc bias of less than 2% can improve the stability of the interference fringes. (C) 1996 Optical Society of America
引用
收藏
页码：1256 / 1258
页数：3
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