Enhanced modulation bandwidth of surface-emitting laser with external optical feedback

IEICE Electronics Express

Fumio Koyama¹  Takashi Kondo¹  Takeshi Uchida¹  Tomoaki Ota¹ 

[1] Microsystem Research Center, P & I Lab., Tokyo Institute of Technology

关键词: semiconductor laser;    direct modulation;    optical communication;    external-cavity laser;    surface emitting laser;   

DOI  :  10.1587/elex.1.368

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(6)Cited-By(5)We propose a monolithic external-cavity vertical-cavity surface emitting laser (VCSEL) for achieving ultra-high speed direct modulation beyond the limit of a relaxation oscillation frequency. We present the modeling of small-signal and large signal modulation characteristics of VCSELs with optical feedback. It is predicted that a 3 dB-modulation bandwidth can be increased by 50% with optimizing an external cavity length. Also, better eye opening can be expected in 40Gbps direct modulation.

【 授权许可】

Unknown