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Frontiers of Optoelectronics

Front Optoelec    2012, Vol. 5 Issue (4) : 435-438     DOI: 10.1007/s12200-012-0292-8
Rayleigh backscattering noise in single-fiber loopback duplex WDM-PON architecture
Duan LIU(), Songnian FU, Ming TANG, Ping SHUM, Deming LIU
National Engineering Laboratory of Next Generation Internet Access System, School of Optical & Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
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This paper investigated the impact of Rayleigh backscattering (RB) noise in the proposed wavelength-division-multiplexed (WDM) single-fiber loopback access network. RB noise’s impacts on the downstream and upstream service were discussed in details. It was found that the receiver sensitivity was less sensitive when the seeding-light power was below -12.6 dBm. And for the uplink RB noise, a higher reflective semiconductor optical amplifier (RSOA)’s bias current results in lower receiver sensitivity.

Keywords passive optical network (PON)      reflective semiconductor optical amplifier (RSOA)      Rayleigh backscattering (RB)     
Corresponding Authors: LIU Duan,   
Issue Date: 05 December 2012
 Cite this article:   
Duan LIU,Songnian FU,Ming TANG, et al. Rayleigh backscattering noise in single-fiber loopback duplex WDM-PON architecture[J]. Front Optoelec, 2012, 5(4): 435-438.
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Duan LIU
Songnian FU
Deming LIU
Fig.1  Proposed WDM-PON architecture of simultaneous downstream SCM P2P data, DPSK broadcasting data and upstream data
Fig.2  Relationship between receiver sensitivity and seeding-light power
Fig.3  Output power of RSOA versus seeding-light power
Fig.4  Receiver sensitivity versus bias of RSOA
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