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Proceedings Paper

Multisource crosstalk as a function of channel frequency spacing in an 8x8 Benes optical switch
Author(s): Luis Goncalo C. Cancela; Joao Jose De Oliveira Pires
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Paper Abstract

Imperfect isolation of switching elements inside optical space switches gives rise to leakage signals that originates multisource crosstalk. The effects of this crosstalk are examined as a function of channel frequency spacing in an 8 X 8 Benes architecture. The statistics of this disturbance are also discussed and power penalties evaluated. In particular, we have found that the Gaussian approximation is not appropriated for this switch size, when the switch crosstalk is larger than -35 dB. Our results also show that, if input signals are all of nominally the same wavelength, crosstalk levels less than -32 dB are required to achieve a power penalty below 1 dB. However, when the channel frequency spacing increases power penalty decreases and in the limit, when the interferometric noise falls completely outside the receiver electrical bandwidth the multisource crosstalk becomes negligible.

Paper Details

Date Published: 7 October 1998
PDF: 9 pages
Proc. SPIE 3531, All-Optical Networking: Architecture, Control, and Management Issues, (7 October 1998); doi: 10.1117/12.327071
Show Author Affiliations
Luis Goncalo C. Cancela, Instituto Superior Tecnico (Portugal)
Joao Jose De Oliveira Pires, Instituto Superior Tecnico (Portugal)

Published in SPIE Proceedings Vol. 3531:
All-Optical Networking: Architecture, Control, and Management Issues
John M. Senior; Chunming Qiao, Editor(s)

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