Title :
Carrier-Reuse WDM-PON Using a Shared Delay Interferometer for Separating Carriers and Subcarriers
Author :
Xu, Zhaowen ; Wen, Yang Jing ; Zhong, Wen-De ; Attygalle, Manik ; Cheng, Xiao Fei ; Wang, Yixin ; Lu, Chao
Author_Institution :
Inst. for Infocomm Res., Singapore
fDate :
6/1/2007 12:00:00 AM
Abstract :
We propose a novel optical carrier-reuse scheme for the wavelength-division-multiplexed passive optical network. The scheme is based on a single delay interferometer (DI) at the remote node and reflective semiconductor optical amplifiers (RSOAs) at optical network units as the colorless devices for upstream transmission. The downstream subcarrier signals are optically separated by the DI for baseband detection of the downstream data and the separated optical carriers are used for seeding the RSOAs. Eight-channel upstream and downstream transmission is demonstrated at 1.25 Gb/s using the proposed scheme. The impact of optical carrier-to-subcarrier ratio of downlink signal and seeding light power on performance is also investigated
Keywords :
light interferometers; optical fibre networks; semiconductor optical amplifiers; telecommunication channels; wavelength division multiplexing; 1.25 Gbit/s; WDM-PON; carrier-reuse; optical carrier-to-subcarrier ratio; reflective semiconductor optical amplifier; shared delay interferometer; wavelength-division-multiplexed passive optical network; Delay; Downlink; Light sources; Optical filters; Optical interferometry; Optical mixing; Optical network units; Optical receivers; Passive optical networks; Stimulated emission; Carrier reuse; passive optical network (PON); reflective semiconductor optical amplifier (RSOA); wavelength- division multiplexing (WDM);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.897298
