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Authors: A. Ribeiro, K. Miura, T. Spuesens, W. Bogaerts
Title: Phase shift control with active feedback
Format: International Conference Proceedings
Publication date: 11/2016
Journal/Conference/Book: Proceedings Symposium IEEE Photonics Society Benelux
Volume(Issue): p.291-294
Location: Gent, Belgium
Citations: Look up on Google Scholar
Download: Download this Publication (552KB) (552KB)


We present a closed feedback loop approach to actively control the differential phase shift induced by a thermo-optic modulator in a silicon on insulator platform. We use an on-chip differential phase shift monitoring using integrated balanced photodiodes to generate the feedback signal to control the phase shifter. In addition to the optical circuit we use a control layer to analyse the feedback signal and adapt the electrical power applied in the thermo-optical phase shifter in order to achieve the desired phase shift.

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