Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1975-09-25
1976-10-12
Griffin, Robert L.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
179 15AL, 179 15AT, 179 15FD, 350 96C, 350 96WG, H04B 900, H04M 356
Patent
active
039860205
ABSTRACT:
In the disclosed common medium multichannel exchange and switching system, optical carrier frequencies and bandwidths are employed and provide switched channels of unprecedentedly large bandwidth. At the same time, the switching network at optical frequencies is of such unprecedentedly small size that it promises to be implementable via integrated optics on only one integrated circuit chip, or, at most, a few chips of suitable material. The system is adapted to optical frequencies in that the common medium is an optical strip guide and optical directional channel-separation filters are employed to couple a plurality of switched customers or switched facilities on to or off of the common medium. At the same time, the system is compatible with the central processing control of the general type employed in current electronic switching systems. In one embodiment, some of the directional channel-separation filters are tunable over the entire bandwidth of the system without compromising the small size of the integrated optics network by employing a variable diffraction-grating effect induced by an acoustic wave. A second embodiment provides distributed switching employing a looped common medium.
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Frequency Selective Coupler for Integrated Optics Systems - Optics Communications - Mar. 1973, C. Elachi et al., pp. 201-203.
Bell Telephone Laboratories Incorporated
Bookbinder Marc E.
Griffin Robert L.
Wisner Wilford L.
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