title: Monolithic polarization diversity coherent receiver based on 120-degree optical hybrids on silicon.
abstract: We present a monolithic polarization diversity coherent receiver by employing 120-degree optical hybrids on a silicon photonic integrated circuit (PIC). This PIC monolithically integrates silicon inverse tapers for fiber coupling, silicon polarization splitters, germanium high-speed photo detectors, and 120-degree optical hybrids based on 3x3 multimode interferometers (MMI). We demonstrate that 112-Gb/s polarization-division-multiplexed quadrature phase-shift keyed signals are detected in the wavelength range of 1530-1580 nm with comparable performance to commercial receivers.
authors: Po
authors: P
authors: Dong
authors: Chongjin
authors: C
authors: Xie
authors: Lawrence L
authors: LL
authors: Buhl