Reduced timing sensitivity in all-optical switching using flat-top control pulses obtained by the optical Fourier transform technique

Oxenløwe, L. K., Galili, M., Mulvad, H. C.H., Clausen, A. T. and Jeppesen, P. (2007) Reduced timing sensitivity in all-optical switching using flat-top control pulses obtained by the optical Fourier transform technique. In 2006 International Conference on Photonics in Switching, Proceedings, PS. IEEE. pp. 129-131 . (doi:10.1109/PS.2006.4350158).

Abstract

For high-speed serial data, timing tolerance is crucial for switching and regeneration. We propose a novel scheme to generate flat-top pulses, for use as gating control pulses. The scheme relies on spectral shaping by a square-shaped filter, followed by a linear transformation of the spectral shape into the time domain, referred to as the optical Fourier transform technique. A 3 ps flat-top pulse derived from a 3 nm wide square filter is obtained, and used to gate an all-optical OTDM demultiplexer, yielding an error-free timing jitter tolerance of 3 ps for 80 Gb/s and 160 Gb/s data signals.

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Contributors

Author: H. C.H. Mulvad

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