Title :
Digital Coherent Receiver for Phase-Modulated Radio-Over-Fiber Optical Links
Author :
Zibar, Darko ; Yu, Xianbin ; Peucheret, Christophe ; Jeppesen, Palle ; Monroy, Idelfonso T.
Author_Institution :
Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby
Abstract :
A novel digital signal processing-based coherent receiver for phase-modulated radio-over-fiber (RoF) optical links is presented and demonstrated experimentally. Error-free demodulation of 50-Mbaud binary phase-shift keying (BPSK) and quadrature phase-shift keying data signal modulated on a 5-GHz radio-frequency (RF) carrier is experimentally demonstrated using the proposed digital coherent receiver. Additionally, a wavelength- division-multiplexing (WDM) phase-modulated RoF optical link is experimentally demonstrated. A 3times50 Mb/s WDM transmission of a BPSK modulated 5-GHz RF carrier is achieved over 25 km for the WDM channel spacing of 12.5 and 25 GHz, respectively.
Keywords :
channel spacing; optical links; phase modulation; quadrature phase shift keying; radio receivers; radio-over-fibre; RoF optical links; WDM channel spacing; binary phase-shift keying; digital coherent receiver; digital signal processing; error-free demodulation; frequency 12.5 GHz; frequency 25 GHz; frequency 5 GHz; phase modulation; quadrature phase-shift keying; radio-over-fiber optical links; wavelength division multiplexing; Carrier recovery; coherent communication; digital receivers; digital signal processing (DSP); microwave photonics; phase-locked loop (PLL); phase-modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2009359
