DocumentCode :
1402919
Title :
Optical preamplifier receiver for spectrum-sliced WDM
Author :
Arya, Vivek ; Jacobs, Ira
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Volume :
15
Issue :
4
fYear :
1997
fDate :
4/1/1997 12:00:00 AM
Firstpage :
576
Lastpage :
583
Abstract :
Spectrum-slicing provides a low-cost alternative to the use of multiple coherent lasers for wavelength division multiplexing (WDM) applications by utilizing spectral slices of a single broadband noise source for creating the multichannel system. In this paper we analyze the performance of both p-i-n and optical preamplifier receivers for spectrum-sliced WDM using actual noise distributions, and the results are compared with those using the Gaussian approximation. This extends prior results of Marcuse for the detection of deterministic signals in the presence of optical amplifier and receiver noise. Although the methodology is similar, the results are considerably different when the signal is itself noise-like. For the case of noise-like signals, it is shown that when an optical preamplifier receiver is used, there exists an optimum filter bandwidth which minimizes the detection sensitivity for a given error probability. Moreover the evaluated detection sensitivity, in photons/bit, represents an order of magnitude (>10 dB) improvement over conventional detection techniques that employ p-i-n receivers. The Gaussian approximation is shown to be overly conservative when dealing with small ratios of the receiver optical to electrical bandwidth, for both p-i-n and preamplifier receivers
Keywords :
Gaussian distribution; approximation theory; optical noise; optical receivers; preamplifiers; probability; sensitivity; wavelength division multiplexing; Gaussian approximation; actual noise distributions; deterministic signals; error probability; evaluated detection sensitivity; low-cost alternative; multichannel system; multiple coherent lasers; optical preamplifier receiver; optical preamplifier receivers; p-i-n preamplifier receivers; single broadband noise source; spectrum-sliced WDM; wavelength division multiplexing; Bandwidth; Gaussian approximation; Optical filters; Optical noise; Optical receivers; Optical sensors; PIN photodiodes; Preamplifiers; Stimulated emission; Wavelength division multiplexing;
fLanguage :
English
Journal_Title :
Lightwave Technology, Journal of
Publisher :
ieee
ISSN :
0733-8724
Type :
jour
DOI :
10.1109/50.566678
Filename :
566678
Link To Document :
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