Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications

Darpan Mishra; Manoranjan Minz; Ramesh Kumar Sonkar; Mohd. Mansoor Khan

doi:10.1117/12.2538873

19 November 2019 Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications

Darpan Mishra, Manoranjan Minz, Ramesh Kumar Sonkar, Mohd. Mansoor Khan

Proceedings Volume 11193, Nanophotonics and Micro/Nano Optics V; 111930T (2019) https://doi.org/10.1117/12.2538873
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

Abstract

This paper analyzes a germanium-doped silicon traveling wave Mach-Zehnder modulator (TWMZM) for high speed operation at 1550 nm wavelength. Single arm drive modulator performance using non-return-to-zero on-off keying (NRZ-OOK) driving scheme has been investigated. The phase-loss characteristics of the graded-index silicon-germanium PN phase shifter have been determined numerically. The traveling wave electrode has been designed for 1.5 mm long phase shifter. The 3 dB modulation bandwidth of the designed TWMZM is calculated to be 31 GHz at -2 V and an error-free operation of 59 Gbps has been obtained for 2 V peak-to-peak drive voltage with an extinction of ~6 dB.

Citation Download Citation

Darpan Mishra, Manoranjan Minz, Ramesh Kumar Sonkar, and Mohd. Mansoor Khan "Bandwidth optimization of germanium-doped silicon optical modulator for high-speed applications", Proc. SPIE 11193, Nanophotonics and Micro/Nano Optics V, 111930T (19 November 2019); https://doi.org/10.1117/12.2538873

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