Open AccessDP-QPSK Coherent Detection Using 2D Grating Coupled Silicon Based Receiver
Author(s) -
Ching-Wei Peng,
Chi-Wai Chow,
Pin-Cheng Kuo,
Guan-Hong Chen,
Chien-Hung Yeh,
Jyehong Chen,
Yinchieh Lai
Publication year - 2020
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2020.3043592
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
We propose and demonstrate a 100 Gbit/s silicon photonic (SiPh) coherent receiver (Rx) with advanced digital signal processing (DSP) for dual-polarization quadrature-phase-shift-keying (DP-QPSK) transmission. It employs integrated 2D polarization-splitting grating couplers (2D-GCs), modified hybrid mixers and high speed silicon-germanium (SiGe) photodiodes (PDs). The 2D-GC replaced the polarization beam splitters and rotators needed in traditional coherent Rx. Moreover, the SiGe PD has the bandwidth >50 GHz.