Abstract
This paper presents experimental and modeling results for extending the 3-dB modulation bandwidth of a 980-nm quasi-single-mode (QSM) vertical-cavity surface-emitting laser (VCSEL) with a passive transverse-coupled cavity (TCC). While the bandwidth of a conventional VCSEL is 9 GHz, the 3-dB modulation bandwidth of a QSM TCC VCSEL with the same epi-wafer structure can reach 27 GHz, which is three times larger than the conventional VCSEL without optical feedback. A clear eye opening is obtained for large-signal modulations at 36 Gbps. A numerical simulation for further enhancement of the bandwidth is also conducted.
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