Optical fiber connector utilizing opposed lenses

Details Optical fiber connector utilizing opposed lenses Optical fiber connector utilizing opposed lenses

1977-02-11

1978-10-10

Corbin, John K.

350 9621, G02B 514

Patent

active

041193628

ABSTRACT:
This invention provides an arrangement for optical coupling, including interconnecting optical fibers, coupling a source to the fiber and coupling a fiber to a detector. The connector may comprise an objective lens and an immersion lens provided by opposed cavities in a transparent medium, each containing an index of refraction material, with the optical fibers to be connected inserted into the opposed cavities. Cavities also are used in source-to-fiber and fiber-to-detector coupling, being defined by surfaces of revolution and providing an aligning and positioning means. By appropriate selection of the indices of refraction of the index of refraction material and the transparent medium, the light from the emitting device is refracted and transmitted to the receiving device, resulting in low-loss light transmission. Means may be provided for changing the emittance angle so as to cause the light to be within the acceptance angle of the receiving device. In one embodiment at least one intermediate lens is positioned between the objective and immersion lenses.

REFERENCES:
patent: 3405992 (1968-10-01), Hutson et al.
patent: 3832030 (1974-08-01), Gloge
patent: 3864019 (1975-02-01), Smolinsky et al.
patent: 3944328 (1976-03-01), Kent et al.
patent: 4015894 (1977-04-01), Rocton
Cohen et al., "Microlenses for Coupling Junction Lasers to Optical Fibers," Applied Optics, vol. 13, No. 1, Jan. 1974, pp. 89-94.

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