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10-GHz 11.5-ps Pulse Generation From a Single-Mode Gain-Switched InGaAs VCSEL at 1.1 \mu m

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3 Author(s)
Kengo Koizumi ; Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan ; Masato Yoshida ; Masataka Nakazawa

We have successfully generated a 10-GHz 11.5-ps pulse train at 1.1 mum by using a gain switching technique with a high-speed and single-mode vertical-cavity surface-emitting laser (VCSEL). The InGaAs-based VCSEL we used had a sidemode suppression ratio of more than 50 dB and a modulation bandwidth of 7.2 GHz. A nearly transform-limited Gaussian pulse was obtained after chirp compensation, and the repetition rate can be increased up to 16 GHz. We also demonstrated a 10-Gb/s return-to-zero data modulation for the generated 10-GHz pulse train.

Published in:

IEEE Photonics Technology Letters  (Volume:21 ,  Issue: 22 )