Title :
QAM coherent subcarrier multiplexing system based on heterodyne detection using intermediate frequency carrier modulation
Author :
Zhu, Ran ; Xu, Kun ; Zhang, Ye ; Li, Yan ; Wu, Jian ; Hong, Xiaobin ; Lin, Jintong
Author_Institution :
Key Lab. of Opt. Commun. & Lightwave Technol., Beijing Univ. of Posts & Telecommun., Beijing
fDate :
Sept. 9 2008-Oct. 3 2008
Abstract :
A novel QAM coherent subcarrier multiplexing system which is based on heterodyne detection is proposed and demonstrated experimentally. At the transmitter side, intermediate frequency carrier modulation which is used for subcarrier enables demodulation of QAM with heterodyne detection. The experiment and theoretical simulation show that the coherent optical system operating for multi-channel using QAM modulation format achieves high spectral efficiency and has excellent performance in demodulation of QAM signals.
Keywords :
demodulation; frequency modulation; heterodyne detection; optical modulation; optical signal detection; quadrature amplitude modulation; subcarrier multiplexing; telecommunication channels; QAM signal demodulation; coherent optical system; coherent subcarrier multiplexing system; heterodyne detection; intermediate frequency carrier modulation; multichannel system; spectral efficiency; Frequency modulation; High speed optical techniques; Optical filters; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical transmitters; Quadrature amplitude modulation; Wavelength division multiplexing;
Conference_Titel :
Microwave photonics, 2008. jointly held with the 2008 asia-pacific microwave photonics conference. mwp/apmp 2008. international topical meeting on
Conference_Location :
Gold Coast, Qld
Print_ISBN :
978-1-4244-2168-8
Electronic_ISBN :
978-1-4244-2169-5
DOI :
10.1109/MWP.2008.4666662
