Title :
64 channels 1Gbit/s ultra-dense WDM PON system based on coherent heterodyne receiver
Author :
He, Chao ; Chen, Hongwei ; Chen, Minghua ; Xie, Shizhong
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, we present a new structure of PON system based on coherent heterodyne receivers. The coherent detection enables a filterless ultra-dense WDM system. We simulated a 64 channel system with 10GHz channel spacing, offering symmetrical 1 Gbit/s sustained data rate per user both downlink and uplink by single fiber. The quadrature phase-shift keying (QPSK) modulation format is applied to downstream data for higher spectrum efficiency, while we use Amplitude Modulation (AM) on upstream data to reduce the system cost.
Keywords :
heterodyne detection; optical modulation; passive optical networks; quadrature phase shift keying; wavelength division multiplexing; wireless channels; QPSK modulation; amplitude modulation; bit rate 1 Gbit/s; channel spacing; coherent detection; coherent heterodyne receiver; downstream data; filterless ultra-dense WDM system; quadrature phase shift keying modulation; single fiber; ultra-dense WDM PON system; upstream data; Frequency conversion; Frequency modulation; Optical fibers; Optical filters; Optical polarization; Passive optical networks; Coherent detection; QPSK; WDM PON;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013167
