Title :
Single-Sideband Modulation Based on an Injection-Locked DFB Laser in Radio-Over-Fiber Systems
Author :
Hong, Cheng ; Zhang, Cheng ; Li, Mingjin ; Zhu, Lixin ; Li, Li ; Hu, Weiwei ; Xu, Anshi ; Chen, Zhangyuan
Author_Institution :
Dept. of Electron., Peking Univ., Beijing, China
fDate :
4/1/2010 12:00:00 AM
Abstract :
We report an experimental demonstration of optical single-sideband (SSB) modulation in 60-GHz radio-over-fiber systems based on an injection-locked distributed-feedback (DFB) laser. Two heterodyning optical modes with 60-GHz spacing are injected into the DFB laser and one of them is used to lock the DFB laser. When the DFB laser is directly modulated, the modulation index of the locked mode is 15 dB larger than that of the unlocked one. The 2.5-Gb/s data transmission at 60 GHz is successfully achieved over 50-km standard single-mode fiber using the proposed SSB scheme.
Keywords :
distributed feedback lasers; optical modulation; radio-over-fibre; semiconductor lasers; bit rate 2.5 Gbit/s; data transmission; frequency 60 GHz; heterodyning optical modes; injection-locked DFB laser; radio-over-fiber systems; single-sideband modulation; Distributed-feedback (DFB) laser; injection-locking; radio-over-fiber (RoF); single-sideband (SSB) modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2040983
