SPECTRAL LINEWIDTH OF DFB LASERS INCLUDING THE EFFECTS OF SPATIAL HOLEBURNING AND NONUNIFORM CURRENT INJECTION

被引:40
作者
PAN, X
OLESEN, H
TROMBORG, B
机构
[1] TFL Telecommunications Research Laboratory
关键词
Diffusion - Laser Beams--Spectrum Analysis - Photons;
D O I
10.1109/68.54690
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new analytic expression for the linewidth of DFB lasers is derived. Local fluctuations in carrier density are shown to give a significant contribution to laser linewidth in the presence of spatial holeburning. In a single-electrode DFB laser the effect can be avoided by careful optimization of the Ω-product, but for a multielectrode DFB laser the linewidth can also be reduced by adjusting the injected current profile to compensate for spatial holeburning. Numerical results for a three-electrode λ/4-shifted DFB laser are presented. © 1990 IEEE
引用
收藏
页码:312 / 315
页数:4
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