Slow-light-based variable symbol-rate silicon photonics DQPSK receiver

Open Access

10 February 2012

journal article
Published by Optica Publishing Group in Optics Express

Vol. 20 (4) , 4796-4804
https://doi.org/10.1364/oe.20.004796

Abstract

We report a silicon DQPSK receiver whose symbol rate can be varied by a tunable one-bit delay line including an all-pass micro-ring slow-light device. It also consists of Si-wire waveguides with spot-size converters, optimized splitters/couplers, heater-controlled Mach-Zehnder attenuators and phase shifters, 90° hybrid with a low-loss crossing and balanced Ge photodiodes, all of which are fabricated by using CMOS-compatible process. Demodulation was confirmed at symbol-rates of 7.4 − 9.0 Gbaud, corresponding to bit-rates of 14.8 − 18.0 Gb/s.

Keywords

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