Compensation of modulators nonlinearities for higher order modulation formats

L. Chorchos

doi:10.1117/12.2509809

1 February 2019 Compensation of modulators nonlinearities for higher order modulation formats

L. Chorchos

Proceedings Volume 10946, Metro and Data Center Optical Networks and Short-Reach Links II; 109460L (2019) https://doi.org/10.1117/12.2509809
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

In this paper, a study of the influence and compensation of electroabsorption and Mach-Zehnder modulator non-linarites is made for the PAM-4, PAM-5 and PAM-8 modulation formats. The compensation is made with a level adjustment by a digital to analog converter (DAC) for which number of bits exceeds the minimal requirements for evaluated modulation schemes. As figures of merit, the level distribution and eye-opening corresponding to each level is used. The results show that compensation increases the signal quality by leveraging the modulator’s static extinction ratio.

Citation Download Citation

L. Chorchos "Compensation of modulators nonlinearities for higher order modulation formats ", Proc. SPIE 10946, Metro and Data Center Optical Networks and Short-Reach Links II, 109460L (1 February 2019); https://doi.org/10.1117/12.2509809

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