Title :
Signal Remodulation Ring WDM Passive Optical Network with Rayleigh Backscattering Interferometric Noise Mitigation
Author :
Yeh, C.H. ; Chow, C.W.
Author_Institution :
Inf. & Commun. Res. Labs., Ind. Technol. Res. Inst. (ITRI), Hsinchu, Taiwan
fDate :
10/1/2011 12:00:00 AM
Abstract :
We propose and demonstrate a novel and simple signal remodulation ring-based wavelength division multiplexed passive optical network (WDM-PON) scheme with the capability to mitigate the Rayleigh backscattering (RB) beat noise in colorless signal remodulation operation. The effects of RB can be avoided since the backscattering effects and upstream signals travel in opposite directions. Here, 10 Gb/s DPSK downstream is used to launch into reflective optical semiconductor amplifier (RSOA)-based optical network unit (ONU) for signal remodulation at 1.25 or 2.5 Gb/s on-off keying (OOK). Moreover, the network performance has also been analyzed and discussed.
Keywords :
amplitude shift keying; interferometry; noise; optical modulation; passive optical networks; semiconductor optical amplifiers; wavelength division multiplexing; Rayleigh backscattering interferometric noise mitigation; WDM-PON scheme; bit rate 1.25 Gbit/s; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; colorless signal remodulation operation; on-off keying; optical network unit; reflective optical semiconductor amplifier; signal remodulation ring; wavelength division multiplexed passive optical network; Differential phase shift keying; Noise; Optical interferometry; Optical network units; Optical sensors; Passive optical networks; Wavelength division multiplexing; DPSK; OOK; Rayleigh backscattering; WDM; passive optical network (PON); sensitivity;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.082611.101838
