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Authors: L. Bogaert, K. Van Gasse, G. Torfs, J. Bauwelinck, G. Roelkens
Title: High-power traveling wave photodetector in silicon photonics with monolithically integrated optical power splitter
Format: International Conference Proceedings
Publication date: Accepted for publication. Not yet published
Journal/Conference/Book: Proceedings Symposium IEEE Photonics Society Benelux
Location: Netherlands

Abstract

Photodetectors suffer from a limited maximum RF output power. To boost the maximum photodetector RF output power while maintaining a high bandwidth, we designed traveling wave photodetectors (TWPDs) integrated on a silicon photonics platform. By carefully matching the delay in the optical and electrical domain, constructive addition maximizes the output power. Additionally, a monolithically integrated star coupler is added to the design to limit the optical power in the waveguides and hereby preserve the high linearity introduced by the TWPD. In this paper, focus will be on the TWPD itself, for which bandwidth and impedance measurements will be presented.

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