Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1992-06-22
1994-04-12
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
319123, 319128, 370 601, 370 852, H04J 1408
Patent
active
053030788
ABSTRACT:
Apparatus and method for large scale asynchronous transfer mode (ATM) switching utilizing tunable lasers and fixed-tuned receivers are provided. The apparatus, an optical switch, includes a plurality of input modules for receiving ATM cells to be switched and a plurality of output modules for outputting the switched ATM cells. The optical switch also includes an optical transmission network for optically transmitting each ATM cell from an input module to a particular output module, and a contention resolution device in electrical communication with the plurality of input modules for selecting the ATM cells from the plurality of input modules to be switched. Preferably, each output module includes a plurality of fixed-tuned receivers and each input module includes a plurality of tunable lasers. The fixed-tuned receivers of each output module are tuned to a particular wavelength so as to pass only those ATM cells optically received from the optical transmission network at the particular wavelength. The tunable lasers are tunable to a plurality of distinct wavelengths for optically transmitting the ATM cell to the optical transmission network at the particular distinct wavelength associated with the output module to which the ATM cell is destined.
REFERENCES:
patent: 4896934 (1990-01-01), Arthurs et al.
patent: 5005167 (1991-04-01), Arthurs et al.
patent: 5105292 (1992-04-01), Le Roy et al.
patent: 5119370 (1992-06-01), Terry
patent: 5194977 (1993-03-01), Nishio
Suzuki, Nishio, Numai, Fujiwara, Itoh, Murata and Shimosaka, "A Photonic Wavelength Division Switching System Using Tunable Laser Diode Filters", Journal of Lightwave Technology, vol. 8, No. 5, May, 1990, pp. 660-665.
Brackett Charles A.
Cisneros Arturo
Bell Communications Research Inc.
Gurey Stephen M.
Negash K.
Pascal Leslie
Suchyta Leonard Charles
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