用于双边带直接检测光正交频分复用信号的逐块相位切换

Block-wise phase switching for double-sideband direct detected optical OFDM signals.

作者信息

Chen Xi, Li An, Che Di, Hu Qian, Wang Yifei, He Jiayuan, Shieh William

机构信息

Department of Electrical and Electronic Engineering, The University of Melbourne, Melbourne, Victoria 3010, Australia.

出版信息

Opt Express. 2013 Jun 3;21(11):13436-41. doi: 10.1364/OE.21.013436.

DOI:10.1364/OE.21.013436

PMID:23736596

Abstract

We propose phase switching for either main-carrier or subcarriers of two consecutive signal blocks to achieve fading-free double-sideband direct-detection (DD). The proposed approach has twice of the electrical spectral efficiency (SE) of offset OFDM, and the same electrical SE as single-side band (SSB) OFDM. With this scheme, 40-Gb/s DD-OOFDM is successfully received over 80-km SSMF with single polarization and single detector.

摘要

我们提出对两个连续信号块的主载波或子载波进行相位切换，以实现无衰落双边带直接检测（DD）。所提出的方法具有两倍于偏移正交频分复用（OFDM）的电频谱效率（SE），并且与单边带（SSB）OFDM具有相同的电SE。采用该方案，在单偏振和单探测器的情况下，通过80公里的标准单模光纤（SSMF）成功接收了40Gb/s的直接检测正交频分复用（DD-OOFDM）信号。