Precision focusing and locating collar for a fiber optic connect

Details Precision focusing and locating collar for a fiber optic connect Precision focusing and locating collar for a fiber optic connect

1990-04-25

1991-12-10

Lee, John D.

Optical waveguides

With optical coupler

Input/output coupler

385 79, G02B 632

Patent

active

050712179

ABSTRACT:
An integrated lens and positioning mechanism for an optical fiber involving a convex surface on a optically transparent precision collar formed around the end of the fiber. The optically transparent collar has an index of refraction less than or equal to that of the fiber's surface. The fiber extends through the collar and is located at the optical center of the collar. The convex surface focuses light on the optical fiber within the collar thus increasing the amount of light collected in the core of the fiber. The collar has specific dimensions to allow precise positioning in a suitable locating body. A stray light suppressor may be formed behind the collar along the optical path of the fiber to remove unwanted light.

REFERENCES:
patent: 3779628 (1979-12-01), Kapron et al.
patent: 4810053 (1989-03-01), Woith
patent: 4844580 (1989-07-01), Lynch et al.
"Distributed-Index Planar Microlens," Optical Devices and Fibers, vol. 5, Ed. Y. Suematsu, New York: North-Holland, 1983, Chap. 2.4, pp. 142-150.
"Stacked Planar Integrated Optics," Optical Devices and Fibers, vol. 11, Ed. Y. Suematsu, New York: North-Holland, 1984, Chap. 2.5, pp. 141-151.
"Fiber Connectors, Splices and Couplers," Fiber Optics: Advances in Research and Development, Eds. Bendow and Mitra, New York: Plenum Press, 1979, pp. 437-473.

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