VCSEL noise characterization for data rates beyond 25 Gb/s

M. V. Ramana Murty; Jingyi Wang; An-Nien Cheng; Ann L. Harren; Zheng-Wen Feng; Jason Chu; Laura M. Giovane

doi:10.1117/12.2290955

5 March 2018 VCSEL noise characterization for data rates beyond 25 Gb/s

M. V. Ramana Murty, Jingyi Wang, An-Nien Cheng, Ann L. Harren, Zheng-Wen Feng, Jason Chu, Laura M. Giovane

Proceedings Volume 10552, Vertical-Cavity Surface-Emitting Lasers XXII; 1055205 (2018) https://doi.org/10.1117/12.2290955
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

The development of robust next generation multi-mode VCSEL-based optical links requires an accounting of all penalties in the link. While limitations from fiber bandwidth can be overcome to a significant extent using equalization and forward error correction, noise in the link cannot be equalized. Measurements show that mode partition noise depends on launch condition, and the noise penalty can be decreased using devices with small k factor. Time and frequency domain characterization of mode power fluctuations shows that they occur primarily at frequencies below 5 GHz. These findings guide the development of VCSELs for 25GBaud PAM4 and higher bit rate applications.

Citation Download Citation

M. V. Ramana Murty, Jingyi Wang, An-Nien Cheng, Ann L. Harren, Zheng-Wen Feng, Jason Chu, and Laura M. Giovane "VCSEL noise characterization for data rates beyond 25 Gb/s", Proc. SPIE 10552, Vertical-Cavity Surface-Emitting Lasers XXII, 1055205 (5 March 2018); https://doi.org/10.1117/12.2290955

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