Optical star coupler and the method of making

Details Optical star coupler and the method of making Optical star coupler and the method of making

1981-09-02

1984-11-27

Lee, John

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156154, G02B 5172

Patent

active

044847947

ABSTRACT:
An optical star coupler for use in optical systems with multi-mode optical fibers for interconnecting two groups of system fibers, characterized by the star coupler comprising a mixing element, two groups of optical fiber elements and an arrangement for positioning the mixing element and the groups of fiber elements in the same plane. The mixing element is a planar waveguide which has an input and output end which are interconnected to groups of the fiber elements with a packing density of each group of the fiber elements at the input and output ends being as high as possible. The planar waveguide has a thickness approximately equal to the diameter of the fiber elements and the diameter of each of the fiber elements is approximately equal to the core diameter of the system fiber to which it is connected and all of the fiber elements are selected to be of one type of fiber which are either gradient fibers or stepped profile fibers. To position the mixing element and the group of fiber elements in the same plane, a method includes forming a sandwich of the mixing element between a cover and substrate, forming a pair of sandwiches for each group of fiber elements between a substrate and a cover element, assembling these sandwiches on a support element with the polished end surfaces of the fiber element sandwiches engaging the polished end surfaces of the mixing element sandwich, and securing the sandwiches in the assembled position.

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F. Auracher et al., "Optimized Layout for Data Bus System Based on a New Planar Access Coupler", Applied Optics, vol. 16, No. 12, Dec. 1977, pp. 3140-3142.
G. L. Tangonan et al., "Planar Multimode Couplers for Fiber Optics", Optics Communications, vol. 27, No. 3, Dec. 1978, pp. 358-360.
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Schott Informationen, No. 4, 1978, pp. 21-22 (with translation).
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A. F. Milton et al., "Star and Access Couplers for Multichannel Fiber Cables", IEEE J. Quantum Electron, vol. QE-13, No. 9, (9/1977), p. 21D.

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