EXCESS-NOISE FACTOR IN PARTLY GAIN-COUPLED DFB LASERS

被引：4
|
作者：
TYSZKAZAWADZKA, A
SZCZEPANSKI, P
机构：
[1] Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 00-662 Warsaw
来源：
OPTICS COMMUNICATIONS | 1994年 / 111卷 / 5-6期
关键词：
D O I：
10.1016/0030-4018(94)90527-4
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study the effect of complex coupling coefficient on the excess-noise factor in partly gain coupled DFB lasers. It is shown that for a weak and moderate coupling region, the phase of the coupling coefficient affects remarkably the noise level in the laser structure. Moreover, for pure gain coupling structure (phi = pi/2) or for structures in which gain coupling dominates (phi lies in the vicinity of pi/2) we observe an interesting behavior of the characteristics. In contradiction to the characteristics for other phases, a local maximum of the excess-noise factor occurs for some certain value of the coupling strength.
引用
收藏
页码：502 / 506
页数：5
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