Title :
Simultaneous Multichannel Photonic Up-Conversion Based on Nonlinear Polarization Rotation of an SOA for Radio-Over-Fiber Systems
Author :
Fu, Songnian ; Zhong, Wen-De ; Shum, Ping ; Wen, Yang Jing ; Tang, Ming
Author_Institution :
Network Technol. Res. Centre, Nanyang Technol. Univ., Singapore
fDate :
5/1/2009 12:00:00 AM
Abstract :
A photonic frequency up-conversion scheme based on the nonlinear polarization rotation (NPR) arising in a semiconductor optical amplifier for wavelength-division-multiplexing (WDM) baseband signals is proposed and experimentally demonstrated. Error-free simultaneous up-conversion of 4 times 2.5 Gb/s WDM baseband channels with a 20-GHz local oscillator signal is experimentally demonstrated in the whole C-band. Compared with the cross-gain-modulation-based scheme, the proposed scheme is found to be almost independent of the wavelength separation between the probe and pump signals. Both the radio-frequency spectrum and the bit-error-ratio performance after electrical down-conversion have shown low distortion induced by the optical NPR-based up-conversion.
Keywords :
error statistics; light polarisation; optical communication equipment; optical modulation; optical pumping; radio-over-fibre; semiconductor optical amplifiers; wavelength division multiplexing; C-band; WDM baseband channels; bit rate 100 Gbit/s; bit rate 25 Gbit/s; bit-error-ratio performance; cross-gain-modulation-based scheme; electrical down-conversion; error-free simultaneous up-conversion; frequency 20 GHz; local oscillator; nonlinear polarization rotation; photonic frequency up-conversion scheme; pump signals; radio-frequency spectrum; semiconductor optical amplifier; wavelength separation; wavelength-division-multiplexing; Nonlinear polarization rotation (NPR); photonic up-conversion; radio-over-fiber (ROF); semiconductor optical amplifier (SOA);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2014879
