Improvement of slow light performance for vertical-cavity surface-emitting laser using coupled cavity structure

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2012,（6）
• 页码范围: 405-408
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-012-2302-x

摘要

We propose a vertical cavity semiconductor emitting laser (VCSEL) using a coupled-cavity (CC) design to broaden the bandwidths of gain and delay spectra.The structure is formed by constructing a passive cavity coupled with the active cavity.By rendering the strength of the two resonant cavities,the increased gain bandwidth by 340％ and the increased delay bandwidth by 800％ are achieved as compared with the signal-cavity (SC) VCSEL.The wideband spectra present more square-like passband which is expected for slow light system.By using it,a 20 Gbit/s super Gaussian signal is delayed by about 13 ps with high quality.