Optics: measuring and testing – Range or remote distance finding – With photodetection
Patent
1990-04-06
1991-02-12
Lee, John D.
Optics: measuring and testing
Range or remote distance finding
With photodetection
350 9612, 350 9613, 356350, G02B 626
Patent
active
049919261
ABSTRACT:
An integrated optics decorrelator device with a first integrated optics junction. The first optics junction has two input paths and at least one output path formed as a Y-shaped assembly of two mono-modal optical waveguides joined at a node with a central multi-modal optical waveguide. The central multi-modal optical waveguide segment has an output end. A second integrated optics junction has two output paths formed as a Y-shaped assembly of two output mono-modal optical waveguides joined at the output end of the central multi-modal optical waveguide segment. The first integrated optics junction and the second integrated optics junction are formed inside a refractive medium having a lower refractive index than the refractive index of the waveguides. The central multi-modal optical waveguide segment has an elongated multi-modal waveguide for decorrelating symmetric mode light passing through the central multi-modal optical waveguide with respect to anti-symmetric mode light passing through the substrate to the second integrated optics junction coupled to a tapered waveguide segment.
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Arditty et al., "Test Results of an Integrated Fiber Optics Brass Board", pp. 147-150.
TI-Diffused LiNbO3 Branched Waveguide Modulators; Performance and Design.
Heartney Phan T.
Kirk James F.
Lee John D.
Litton Systems Inc.
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