Abstract
In this manuscript we describe the design and transmission system performance of two traveling wave Silicon Photonic (SiP) modulators: i) an O-band, single phase shifter based Mach-Zehnder Modulator (MZM); and ii) a C-band, two phase shifter based Inphase/Quadrature Modulator (IQM). For the O-band device, we demonstrate the transmission of 134 Gbaud PAM-4 (net 250 Gbps) at a BER below the 6.7 % overhead (OH) hard-decision forward error correction (HD-FEC) threshold of 3.8 × 10−3 over 2 km of standard single-mode fiber (SSMF), and we transmit 115 Gbaud PAM-8 (net 288 Gbps) and net 305 Gbps probabilistically shaped (PS)-PAM-8 assuming the 19.02 % overhead soft-decision (SD) FEC. For the C-band device and employing dual-polarization (DP) emulation, we transmit 105 Gbaud DP-64QAM over 80 km below the 25 % overhead SD- FEC BER threshold of 5 × 10−2; featuring the first demonstration of net 1 Tbps transmission using an all-silicon IQM.
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