Capacitive silicon optical modulators for high-speed and high-efficiency operation

David J. Thomson; Bigeng Chen; Weiwei Zhang; Martin Ebert; Xia Chen; Jamie Reynolds; Xingzhao Yan; Han Du; Mehdi Banakar; Ying Tran; Kapil Debnath; Callum G. Littlejohns; Shin Saito; Graham T. Reed

doi:10.1117/12.2603017

6 October 2021 Capacitive silicon optical modulators for high-speed and high-efficiency operation

David J. Thomson, Bigeng Chen, Weiwei Zhang, Martin Ebert, Xia Chen, Jamie Reynolds, Xingzhao Yan, Han Du, Mehdi Banakar, Ying Tran, Kapil Debnath, Callum G. Littlejohns, Shin Saito, Graham T. Reed

Author Affiliations +

Proceedings Volume 11880, Emerging Applications in Silicon Photonics II; 118800J (2021) https://doi.org/10.1117/12.2603017
Event: SPIE Photonex, 2021, Glasgow, United Kingdom

Abstract

The silicon optical modulator is a key component in a high speed optical data link. To advance the modulator performance beyond the popular carrier depletion based devices, we have produced a capacitive device which is instead based upon the accumulation of free carriers either side of a thin insulating layer positioned in the middle of the waveguide. Such a device has a superior efficiency compared with the carrier depletion approach allowing compactness and improved power consumption whilst retaining high speed operation and CMOS compatibility.

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David J. Thomson, Bigeng Chen, Weiwei Zhang, Martin Ebert, Xia Chen, Jamie Reynolds, Xingzhao Yan, Han Du, Mehdi Banakar, Ying Tran, Kapil Debnath, Callum G. Littlejohns, Shin Saito, and Graham T. Reed "Capacitive silicon optical modulators for high-speed and high-efficiency operation", Proc. SPIE 11880, Emerging Applications in Silicon Photonics II, 118800J (6 October 2021); https://doi.org/10.1117/12.2603017

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