title: Performance improvement of double-sideband signals in radio-over-fiber links utilizing pre-distortion method.
abstract: In this paper, we investigate the optimal carrier-to-sideband ratio (CSR) for optical double-sideband (DSB) signals in radio-over-fiber (RoF) transmission. A pre-distortion method based on spectral shaping is proposed to optimize the signal CSR and eliminate the dispersion-induced power fading. A 12 GHz RoF transmission over 29 km standard single mode fiber (SSMF) is experimentally demonstrated which reveals that pre-distorted DSB has a 4.4 dB improvement over the one without pre-distortion, and 1.2 dB sensitivity advantage over single sideband (SSB) both with optimal CSR. The pre-distortion method is also applied to multi-channel transmission. The multi-channel experiment shows that for all channels the dispersion-induced power fading effects can be simultaneously mitigated and the pre-distorted DSB signals have ~1 dB sensitivity improvement over the SSB signals.
authors.forename: Jia
authors.initials: J
authors.lastname: Ye
authors.forename: Lianshan
authors.initials: L
authors.lastname: Yan
authors.forename: An
authors.initials: A
authors.lastname: Li
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: William
authors.initials: W
authors.lastname: Shieh