Published in

Optica, Optics Express, 3(24), p. 2413, 2016

DOI: 10.1364/oe.24.002413

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Dual phase-shift Bragg grating silicon photonic modulator operating up to 60 Gb/s

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

We demonstrate PAM-4 and OOK operation of a novel silicon photonic modulator. The modulator design is based on two phase-shifts in a Bragg Grating structure driven in a push pull configuration. Back-to-back PAM-4 modulation is demonstrated below the FEC threshold at up to 60 Gb/s. OOK modulation is also shown up to 55 Gb/s with MMSE equalization and up to 50 Gb/s without equalization. Eye diagrams and BER curves at different bit rates are provided for both PAM-4 and OOK modulations. To our knowledge, this structure is the fastest silicon photonic modulator based on Bragg gratings, reaching modulation speed comparable to the fastest Mach-Zehnder modulators and micro-ring modulators.