Title :
A photonic up-converter for a WDM radio-over-fiber system using cross-absorption modulation in an EAM
Author :
Park, Chul Soo ; Oh, Choong Keun ; Lee, Chung Ghiu ; Kim, Dong-Hwan ; Park, Chang-Soo
Author_Institution :
Dept. of Inf. & Commun., Gwangju Inst. of Sci. & Technol., South Korea
Abstract :
A photonic frequency up-converter with a wide wavelength bandwidth is demonstrated. The up-converter is based on wavelength conversion by cross-absorption modulation in an electroabsorption modulator. A two-tone measurement is performed to investigate the linearity of the proposed up-converter. Moreover, its dependence on the wavelength and bias voltage are found to be suitable for wavelength-division-multiplexing-based radio-over-fiber application. The proposed up-converter has a spurious free dynamic range larger than 73.8 dB·Hz 23/ throughout the 30-nm range of the local oscillator wavelength. Also, the up-converted signal at 26 GHz has a phase noise of -76.8 dBc/Hz at a 10-kHz offset.
Keywords :
electro-optical modulation; electroabsorption; microwave photonics; optical fibre communication; optical frequency conversion; phase noise; wavelength division multiplexing; 26 GHz; EAM; WDM; cross-absorption modulation; electroabsorption modulator; frequency upconverter; phase noise; photonic upconverter; radio-over-fiber system; two-tone measurement; upconverter linearity; wavelength conversion; wavelength-division-multiplexing; Bandwidth; Dynamic range; Frequency; Linearity; Local oscillators; Optical modulation; Performance evaluation; Voltage; Wavelength division multiplexing; Wavelength measurement; Cross-absorption modulation (XAM); electroabsorption modulator (EAM); photonic frequency up-conversion; radio-over-fiber (RoF) system;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.853015
