A Phase-Retrieving Coherent Receiver Based on Two-Dimensional Photodetector Array
A Phase-Retrieving Coherent Receiver Based on Two-Dimensional Photodetector Array
复制标题
一种基于二维光电探测器阵列的相位检索相干接收机
DOI:
10.1109/jlt.2019.2947305
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发表时间:
2020
影响因子:
4.7
通讯作者:
Yamamoto Naokatsu
中科院分区:
文献类型:
--
作者:
Yoshida Yuki;Umezawa Toshimasa;Kanno Atsushi;Yamamoto Naokatsu
To achieve an ultra-compact and flexible coherent transceiver solution, a carrier-less coherent detection technique using a two-dimensional (2-D) photodetector array (PDA) is proposed based on the idea of phase retrieval (PR). In the proposed PR-based coherent receiver, the optical phase information is digitally reconstructed from multiple intensity-only measurements acquired by arrayed photodetectors; neither local light sources, optical hybrids, nor spatial demultiplexers are needed. We develop a robust and low-complexity PR algorithm, which exploits prior knowledge on the optical modulation format, for the proposed PR receiver. As a proof-of-concept, the coherent detection of 10-Gbaud optical phase-modulated signals, including QPSK, 16-QAM, coherent optical OFDM, and polarization-multiplexed QPSK signals, using only a 2-D PDA is demonstrated experimentally.
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