Multiplex communications – Wide area network – Packet switching
Patent
1980-04-29
1982-11-16
Arnold, Bruce Y.
Multiplex communications
Wide area network
Packet switching
370 3, G02B 532, H04B 900
Patent
active
043592597
ABSTRACT:
A multiplexer/demultiplexer having a holographic element made using a single exposure of a photosensitive medium incorporated therein. In operation as a demultiplexer a single signal having a plurality of wavelengths impinges upon the holographic element in an appropriate manner and is separated into a plurality of signals, each being of a different one of the wavelengths. In the multiplexing mode of operation, a plurality of signals, each being of a different wavelength impinges upon the holographic element in an appropriate manner and emerges therefrom as a single signal having all of said different wavelengths.
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Aoyama et al., "Low-Loss Optical Demultiplexer for WDM Systems in the 0.8 .mu.m Wavelength Region," Applied Optics, vol. 18, No. 16, pp. 2834-2836, Aug. 1979.
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Sincerbox, G. T., "Formation of Optical Elements by Holography", vol. 10, No. 3, IBM Tech. Disclosure Bulletin, pp. 267-268, Aug. 1967.
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Horner Joseph L.
Ludman Jacques E.
Arnold Bruce Y.
Erlich Jacob N.
Singer Donald J.
The United States of America as represented by the Secretary of
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