Chinese Optics Letters, 2019, 17 (1): 010605, Published Online: Jan. 17, 2019
Application of Kramers–Kronig receiver in SSB-OFDM-RoF link Download: 589次
Abstract
We propose and investigate the use of a Kramers–Kronig (KK) receiver in a single sideband orthogonal frequency division multiplexing radio over fiber (SSB-OFDM-RoF) link based on an optical remote heterodyne solution. This scheme is effective in eliminating the signal-to-signal beating interference introduced by square-law detection of a photo-detector in an SSB-OFDM-RoF link. We extensively study the influences of different carrier-to-signal power ratios (CSPRs), laser linewidths, and transmission distances on our proposed scheme. It is proved that the KK-based receiver can reduce optimal CSPR by more than 5 dB and provide about 1.1 dB gain over the conventional mixer-based receiver scheme with CSPR of 11 dB after 75 km fiber transmission.
Yuancheng Cai, Yun Ling, Xiang Gao, Bo Xu, Kun Qiu. Application of Kramers–Kronig receiver in SSB-OFDM-RoF link[J]. Chinese Optics Letters, 2019, 17(1): 010605.