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Acousto-optic tunable filters (AOTFs) for multiwavelength optical cross-connects: crosstalk considerations

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15 Author(s)

Acousto-optic tunable filters (AOTF) have been investigated as a potential basis for multiwavelength cross-connects in optical networks. In this paper, we discuss crosstalk issues, some of which are common to other cross-connect technologies, and some of which are unique to the AOTF, which will determine the suitability of the AOTF technology for this application. In particular we show how the interactions between wavelength channels make the AOTF sensitive to switch architectures, we conclude that significant performance improvements will be required to diminish crosstalk if the AOTF is to be useful in any but small-size cross-connects, even when spare and wavelength dilation are used

Published in:

Journal of Lightwave Technology  (Volume:14 ,  Issue: 6 )