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Products for US Patent 5179605 - Optical interconnection
device
Inventor(s): Kaverhad; Mohsen (Ontario,CA),
Tabiani; Mahmoud (Tehran,IR)
Owner:
University of Ottawa (Ottawa,CA)
Filing
Date: October 10, 1990
Issue
Date: January 12, 1993
Abstract: An optical interconnection device
suitable for an N.times.N' coupler as used, for example, in a local
area network, comprises diffraction means in the form of a body
having a refractive index which varies spatially and periodically in
one plane of the body. The arrangement is such that light incident
upon the body in the plane and at a predetermined angle will be
refracted to emerge at a plurality of discrete angles determined by
the spatially varying refractive index. The incident light is
distributed substantially equally among the plurality of output
refracted beams and substantially all of said incident light is
coupled to the plurality of refracted beams. The diffraction means
comprises a cylindrical body, and the device further comprises two
arrays of optical sources and/or receivers. The arrays are disposed
at opposite faces, respectively, of the body, each of the optical
receivers having an optical axis aligned with one of the discrete
angles. A perfect shuffle network may comprise a plurality of nodes
interconnected by such a coupler, each node comprising a transmitter
operable at several wavelengths a receiver, and means for
determining whether a received signal is to be relayed and, if so,
the appropriate transmission wavelength.
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