Title :
Simultaneous Generation and Transmission of Downstream Multiband Signals and Upstream Data in a Bidirectional Radio-Over-Fiber System
Author :
Chang, Qingjiang ; Fu, Hongyan ; Su, Yikai
Author_Institution :
Shanghai Jiao Tong Univ., Shanghai
Abstract :
We propose and experimentally demonstrate simultaneous generation and transmission of downstream multiband signals and upstream data in a bidirectional radio-over-fiber system. The scheme is based on a dual-parallel Mach-Zehnder modulator and a following single-drive Mach-Zehnder modulator. Multiband data including baseband, frequency-doubled, and frequency-quadrupled signals are generated through optical carrier suppression and frequency-shifting techniques. Upstream data transmission is realized by remodulation of the downstream differential phase-shift-keying signal without the need of additional light source and wavelength management at the base station.
Keywords :
differential phase shift keying; optical modulation; radio-over-fibre; baseband signals; bidirectional radio-over-fiber system; differential phase-shift keying; downstream multiband signals; dual-parallel Mach-Zehnder modulator; frequency-doubled signals; frequency-quadrupled signals; frequency-shifting techniques; optical carrier suppression; upstream data; Base stations; Baseband; Data communication; Differential quadrature phase shift keying; Frequency; Light sources; Optical modulation; Optical transmitters; Phase shift keying; Signal generators; Differential phase-shift keying (DPSK); dual-parallel Mach–Zehnder modulator (DPMZM); multiband signals; radio-over-fiber (RoF); wireline and wireless access;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.912992
