October 2007
Intermediate to advanced
368 pages
10h 55m
English
Content preview from Passive Optical Networks
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master (downstream) and slave (upstream) wavelengths are identical. The upstream
performance at the CO receiver can be potentially degraded by Rayleigh
backscatter-induced intensity noise of the master DFB lasers [59]. Compounding
the issue is that the master light is not CW but modulated with downstream data.
A study was thereby performed on a 25-km bidirectional WDM-PON that utilizes
OIL-VCSELs as ONU transmitters. The Rayleigh backscattering effects were
analyzed by varying the parameter upstream signal to Rayleigh backscattering
ratio (SRR) whilst keeping the extinction ratio (ER) of the downstream and
upstream signals constant. Figure 3.43 (a) ...
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