Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-06-02
1996-04-09
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359117, 359123, 359128, 359140, 359165, H04B 1400, H04B 1402
Patent
active
055067131
ABSTRACT:
An optical switching system to which a plurality of input transmission lines and output transmission lines for transmitting optical signals are arranged and connected, and in which fixed length cells transmitted from the input transmission lines are switched based on the routing information contained in the cells and the switched cells are outputted to the output transmission lines includes: optical cell synchronizer portions for detecting the fronts of the cells and synchronizing the fronts of the cells incoming from respective transmission lines; a switching portion for converting respective cells the fronts of which are synchronized to those of different wavelengths by input transmission lines and for switching them based on the routing information in the cells; multiplexer portions for wavelength division multiplexing the cells switched to different wavelengths by input transmission line with respect to respective output transmission lines; demultiplexer portions for splitting cells wavelength division multiplexed in the multiplexer portions by cell and aligning them in a time series, and wavelength converter portions for converting the cells split in the demultiplexer portions to cells having a predetermined single output wavelength.
REFERENCES:
patent: 5194977 (1993-03-01), Nishio
Ohtsuki Kenichi
Okamoto Manabu
Sakurai Yoshito
Hitachi , Ltd.
Pascal Leslie
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