Optical waveguides – With optical coupler – Input/output coupler
Patent
1990-10-10
1993-01-12
Scott, Jr., Leon
Optical waveguides
With optical coupler
Input/output coupler
G02B 634
Patent
active
051796058
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.
REFERENCES:
patent: 3580655 (1971-05-01), Leith et al.
patent: 4057319 (1977-11-01), Ash et al.
patent: 4705344 (1987-11-01), Hinton et al.
patent: 4838630 (1989-06-01), Jannson et al.
patent: 4877297 (1989-10-01), Yeh
patent: 4914648 (1990-04-01), Acampora
Yeh et al., "Optical Interconnection Using Photorefractive Dynamic Holograms", Applied Optics, vol. 27, No. 11, 1 Jun. 1988.
"Multihop Lightwave Networks: A New Approach To Achieve Terabit Capabilities" by Anthony S. Acampori and Mark J. Karol and Michael G. Hluchyj, 46.1.1-46.1.7 1988 IEEE.
"Bragg Gratings on INGAASP/INP Waveguides as Polarization Independent Optical Filters" by C. Cremer, G. Heise, R. Marz, M. Schienle, G. Schulte-Roth and H. Unzeitig, Journal of Lightwave Technology, vol. 7, No. 11, Nov. 1989.
"Two-Wave Mixing in Nonlinear Media" by Pochi Yeh, IEEE Journal of Quantum Electronics, vol. 25, No. 3 Mar. 1989.
"Spatio Temporal Optical Signal Processing" by Mahmoud Tabiani, A PhD thesis M.I.T. Aug. 1979.
Kaverhad Mohsen
Tabiani Mahmoud
Adams Thomas
Jr. Leon Scott
University of Ottawa
LandOfFree
Optical interconnection device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical interconnection device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical interconnection device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1225112