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

Moncef B. Tayahi; Sivakumar Lanka; Banmali Rawat; Chandrasekhar Roychoudhuri

doi:10.1117/12.590994

18 April 2005 Effect of optical beat interference on channel spacing in DWDM optical systems

Moncef B. Tayahi, Sivakumar Lanka, Banmali Rawat, Chandrasekhar Roychoudhuri

Proceedings Volume 5712, Free-Space Laser Communication Technologies XVII; (2005) https://doi.org/10.1117/12.590994
Event: Lasers and Applications in Science and Engineering, 2005, San Jose, California, United States

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.

Citation Download Citation

Moncef B. Tayahi, Sivakumar Lanka, Banmali Rawat, and Chandrasekhar Roychoudhuri "Effect of optical beat interference on channel spacing in DWDM optical systems", Proc. SPIE 5712, Free-Space Laser Communication Technologies XVII, (18 April 2005); https://doi.org/10.1117/12.590994

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