Optical coupler

Details Optical coupler Optical coupler

1976-12-16

1978-04-04

Corbin, John K.

350 9619, 350162R, G02B 514

Patent

active

040824250

ABSTRACT:
First and second diffraction gratings have a common fundamental spatial frequency. A coupling assembly is formed by connecting the gratings together with bars of the first grating at an angle of approximately 10.sup.-3 radians to bars of the second grating. The coupling assembly is mounted upon a waveguide carried by a substrate. A fiber is moved to a multiplicity of locations on the coupling assembly while light is transmitted through the waveguide. The fiber is fixedly connected to the coupling assembly at a location where there is a maximum amount of the light coupled from the waveguide to the fiber, whereby the fiber and the substrate form a sandwich that includes the coupling assembly and the waveguide. An etching process is used to remove parts of the coupling assembly that are not within the sandwich.

REFERENCES:
patent: 3674336 (1976-07-01), Kogelnik
patent: 3912363 (1975-10-01), Hammer
patent: 3982810 (1976-09-01), Tamir et al.
IBM Tech. Disc. Bulletin, vol. 13, No. 9, Feb. 71 Article by Ash et al. Interconnection of Optical Fibers to Planar Optical Integrated Circuitry.

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