Widely spaced fiber optic connector and multiplexer/demultiplexe

Details Widely spaced fiber optic connector and multiplexer/demultiplexe Widely spaced fiber optic connector and multiplexer/demultiplexe

1985-12-04

1987-11-17

Sikes, William L.

Multiplex communications

Wide area network

Packet switching

350 9620, 350 9621, 350 9615, 370 3, G02B 632, G02B 636, H04B 900

Patent

active

047070633

ABSTRACT:
An imaging component of unitary construction, molded of a transparent optical plastic, and adapted for use with a companion, preferably similar, component to optically couple optical fibers with one another. The component includes a lens surface arranged about an optical axis therethrough, a reference surface for facilitating mounting and positioning the component, and structure for facilitating receiving and positioning the end of an optical fiber at a fixed distance along the optical axis and behind the focus of the lens surface. The optical structure of the component is such that, when used with another axially spaced by a fixed distance and operating at finite conjugates as a pair, the optical fiber end in each is exactly imaged onto or within the entrance pupil of the other. This permits the axial separation between the two components to be substantially greater than the focal length of their lens surfaces so that, among other things, other components such beam-splitters can be introduced between the pair to perform multiplexing functions.

REFERENCES:
patent: 4157216 (1979-06-01), Plummer
patent: 4183618 (1980-01-01), Rush et al.
patent: 4186995 (1980-02-01), Schumacher
patent: 4196990 (1980-04-01), Forsyth
patent: 4382656 (1983-05-01), Gilby
patent: 4420219 (1983-12-01), Muchel
patent: 4421383 (1983-12-01), Carlsen
patent: 4563057 (1986-01-01), Ludman et al.
Jacobs, "Fundamentals of Optical Engineering" chapt. III, Theory of Stops, McGraw-Hill (1943), pp. 48-57.
Thomas, "SPSE Handbook of Photographic Science and Engineering" J. Wiley and Sons, 1973, p. 253.

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