Rayleigh backscattering noise in single-fiber loopback duplex WDM-PON architecture
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
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.
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