Automated Adaptation and Stabilization of a Tunable WDM Polarization-Independent Receiver on Active Silicon Photonic Platform

IEEE Photonics Journal

Sudip Shekhar¹  Nicolas A. F. Jaeger¹  Hossam Shoman¹  Minglei Ma¹  Lukas Chrostowski¹ 

[1] Department of Electrical, and Computer Engineering, University of British Columbia, Vancouver, B.C., Canada;

关键词: Photonic integrated circuits;    automatic control;    silicon photonics;    optical polarization;    wavelength division multiplexing;    demultiplexing;   

DOI  :  10.1109/JPHOT.2020.3012097

来源: DOAJ

【 摘 要 】

We demonstrate automated adaptation, and stabilization of a silicon photonic wavelength-division multiplexing (WDM), polarization-independent receiver. A two-channel, tunable WDM polarization-independent receiver is designed, and used to demonstrate automated WDM polarization control. Using a control algorithm based on Barzilai, and Borwein's two-point step size gradient descent method, we realize automated polarization adaptation, and wavelength stabilization for two arbitrarily polarized input data streams. 10 Gb/s on-off keying, and 20 Gb/s pulse-amplitude modulation 4-level formats are generated as the high-speed input data streams. In addition, we implement a long-duration experiment, in which we measure the bit-error-ratio for continuously varying polarization states, and changing chip temperatures. The experimental results show that, with the automated control, the WDM polarization-independent receiver can adapt, stabilize, and track the arbitrary input polarization states from a standard optical fiber into the transverse electric mode of a silicon waveguide, and simultaneously stabilize the transmitted wavelength channels at various chip temperatures. We also show how the presented WDM polarization-independent receiver scales with N channels, and propose an improved design for large-scale WDM applications.

【 授权许可】

Unknown