Silicon-Organic Hybrid (SOH) Frequency Comb Source for Data Transmission at 784 Gbit/s

Abstract

We demonstrate a frequency comb generator using silicon-organic hybrid (SOH) electrooptic modulators to obtain flat-top comb spectra. This is the first demonstration of a modulator-based frequency comb generator on silicon. The viability of the device is confirmed in a data transmission experiment achieving an aggregate data rate of 784 Gbit/s.

Silicon-organic hybrid (SOH) frequency comb sources for terabit/s data transmission

“…The devices exhibit voltage-length products as small as U L π = 2 V mm at DC. Using a dual-drive Mach-Zehnder modulator (MZM), we demonstrate generation of a flat-top frequency comb comprising 7 lines with a spacing of 40 GHz and a spectral flatness of 2 dB [27]. We demonstrate the viability of SOH comb sources in a series of data transmission experiments, where we explore different line spacings, symbol rates, pulse shapes, and modulation formats.…”