Numerical study of a highly optical-feedback tolerant DFB laser with an absorber and a rear reflector using transfer matrixes and rate equations

IEICE Electronics Express

Takeo Katayama¹  Hitoshi Kawaguchi²  Takeshi Kurosaki² 

[1] NTT Device Innovation Center, NTT Corporation;Nara Institute of Science and Technology

关键词: DFB laser;    distributed feedback;    optical feedback;    transfer matrix;    saturable absorber;    rate equation;   

DOI  :  10.1587/elex.14.20170251

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

To realize a highly optical-feedback tolerant distributed feedback laser diode (DFB LD), we investigate a design approach combining transfer-matrixes and rate-equation analyses. As an important design parameter, we use the C coefficient—the coupling strength between the optical field in the laser cavity and the feedback lightwave—and calculate it numerically. On the basis of the results, a novel DFB-LD structure with high tolerance to optical feedback is proposed and the design parameters are optimized.

【 授权许可】

CC BY