Low index of refraction optical fiber with tubular core and/or c

Details Low index of refraction optical fiber with tubular core and/or c Low index of refraction optical fiber with tubular core and/or c

1991-06-27

1992-10-13

Healy, Brian

Optical waveguides

Optical fiber waveguide with cladding

Utilizing nonsolid core or cladding

385123, 385126, 385127, 385147, G02B 620

Patent

active

051557924

ABSTRACT:
An optical fiber having an index of refraction less than that conventionally available. The low index of refraction fiber 10 of the present invention includes a fiber core 20 of a first index of refraction. The fiber core 20 circumscribes a longitudinal axis, and is surrounded by a cladding layer 30 having a second index of refraction less than the first index of refraction. Included within the cladding layer 30 are a plurality of tube structures 40 arranged about the fiber core 20. The tube structures 40 create a plurality of channels 42 within the cladding layer 20, thereby engendering a low index of refraction therein.

REFERENCES:
patent: 3516239 (1970-06-01), Fukuda et al.
patent: 3814499 (1974-06-01), Marcatilli
patent: 3844752 (1974-10-01), Kaiser
patent: 3976357 (1976-08-01), Lohmeyer
patent: 4921327 (1990-05-01), Zito
patent: 5005944 (1991-04-01), Laakmann et al.

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