Time and wavelength division switching system

Details Time and wavelength division switching system Time and wavelength division switching system

1988-09-30

1991-04-02

Eisenzopf, Reinhard J.

Multiplex communications

Wide area network

Packet switching

455600, H04J 1400

Patent

active

050051660

ABSTRACT:
A time and wavelength (T.times.W) switch comprises a plurality of wavelength selectors for selecting a time division multiplexed (TDM) channel of a first wavelength from a plurality of incoming TDM channels of different wavelengths. A plurality of time-slot switches are connected respectively to the outputs of the wavelength selectors for switching a first time slot of the selected TDM channel to a second time slot. To the outputs of the time-slot switches a plurality of wavelength converters are respectively connected for converting the wavelength of the second time slot to a second wavelength. The T.times.W switches can be arranged as an incoming time and wavelength switching stage and an outgoing time and wavelength switching stage. An array of optical devices interconnecting the outputs of the incoming and outgoing stages constitutes an intermediate stage.

REFERENCES:
patent: 4845703 (1989-07-01), Suzuki

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