Title :
Ring-Based WDM Access Network Providing Both Rayleigh Backscattering Noise Mitigation and Fiber-Fault Protection
Author :
Yeh, C.H. ; Chow, C.W. ; Huang, S.P. ; Sung, J.Y. ; Liu, Y.L. ; Pan, C.L.
Author_Institution :
Inf. & Commun. Res. Labs, Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
In this paper, we propose and investigate a ring-based wavelength-division-multiplexing passive optical network (WDM-PON) providing both Rayleigh backscattering (RB) noise mitigation and fiber-fault protection. The proposed ring-based WDM-PON has a dual-ring architecture to protect and restore any fiber fault. Besides, the ring architecture also can mitigate the RB beat noise, since the RB and the upstream wavelengths are propagating in opposite directions. Here, we discuss and analyze the characteristics of the downstream signals using 10 Gb/s ON-OFF keying (OOK), 10 Gb/s differential phase-shift keying, and 10 Gb/s orthogonal frequency-division multiplexing (OFDM) modulations, respectively. Moreover, we also investigate the upstream traffic using the 2.5 Gb/s OOK and 10 Gb/s OFDM generated by the directly modulated reflective semiconductor optical amplifier-based optical network unit, respectively.
Keywords :
OFDM modulation; Rayleigh scattering; amplitude shift keying; optical modulation; passive optical networks; quadrature phase shift keying; semiconductor optical amplifiers; telecommunication traffic; wavelength division multiplexing; OFDM modulations; OOK; RB beat noise mitigation; RB noise mitigation; Rayleigh backscattering noise mitigation; bit rate 10 Gbit/s; bit rate 2.5 Gbit/s; differential phase-shift keying; directly modulated reflective semiconductor optical amplifier; dual-ring architecture; fiber fault restoration; fiber-fault protection; on-off keying; optical network unit; orthogonal frequency-division multiplexing modulations; ring-based WDM access network; ring-based WDM-PON; ring-based wavelength-division-multiplexing passive optical network; upstream traffic; Bit error rate; OFDM; Optical fiber amplifiers; Optical network units; Passive optical networks; Wavelength division multiplexing; Differential phase-shift keying (DPSK); ON–OFF keying (OOK); fiber-fault protection; orthogonal frequency-division multiplexing (OFDM); ring access; wavelength- division- multiplexing passive optical network (WDM-PON);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2214374
