Wavelength selective optical delay line

Optical: systems and elements – Deflection using a moving element – Using a periodically moving element

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359123, H04J 1408

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active

057371067

ABSTRACT:
An all-optical time slot interchange device comprises at least two wavelength selective delay lines disposed in series and each comprising a delay line for delaying the propagation of an optical signal by increasing the length of the optical path it travels. An optical signal at a given wavelength is extracted from a guide structure and re-injected into the guide structure via the delay line so as to apply a time-delay to the optical signal at a given wavelength. Applications include wavelength-division multiplexing optical telecommunication systems.

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