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Proceedings Paper

Effect of optical beat interference on channel spacing in DWDM optical systems
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Paper Abstract

The information capacity of dense wavelength division multiplexing (DWDM) optical systems is reviewed. The effect of optical beat interference of closely spaced optical carriers sets the limit on the allowed channel spacing even in the absence of nonlinear effects. Present DWDM networks operating at 10.7 Gb/s in the C and L bands region have channel spacing no less than 25 GHz. We show that this limit is a constraint and smaller spacing may not be allowed without further optical and electrical pulse shaping.

Paper Details

Date Published: 18 April 2005
PDF: 5 pages
Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); doi: 10.1117/12.590994
Show Author Affiliations
Moncef B. Tayahi, Univ. of Nevada/Reno (United States)
Sivakumar Lanka, Univ. of Nevada/Reno (United States)
Banmali Rawat, Univ. of Nevada/Reno (United States)
Chandrasekhar Roychoudhuri, Univ. of Connecticut (United States)


Published in SPIE Proceedings Vol. 5712:
Free-Space Laser Communication Technologies XVII
G. Stephen Mecherle, Editor(s)

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