Chinese Optics Letters, 2019, 17 (11): 110602, Published Online: Sep. 12, 2019
Power-efficient heterodyne radio over fiber link with laser phase noise robustness Download: 651次
Abstract
A pre-coding-assisted power detection scheme for radio over fiber downlink is presented. This scheme can eliminate laser phase noise while avoiding high energy-consuming electrical carrier required in conventional power and/or envelope detection schemes. Theoretical analysis and experimental verification are performed. 0.625 Gbaud pre-coded quadrature phase-shift keying or 16 quadrature amplitude modulation signals can both be recovered by power detection without electrical carrier assistance at the receiver after 75 km fiber transmission. Not only robust against the laser phase noise, an improvement of about 5 dB in receiver sensitivity can also be achieved, as compared with the conventional power detection scheme.
Yuancheng Cai, Xiang Gao, Yun Ling, Bo Xu, Kun Qiu. Power-efficient heterodyne radio over fiber link with laser phase noise robustness[J]. Chinese Optics Letters, 2019, 17(11): 110602.