Fiber optic switch and attenuator

Details Fiber optic switch and attenuator Fiber optic switch and attenuator

1997-10-06

1998-11-17

Palmer, Phan T. H.

Optical waveguides

With optical coupler

Switch

385 15, 385123, G02B 626

Patent

active

058388460

ABSTRACT:
A fiber optic switch and attenuator (10) has a sealed capsule (12). The sealed capsule (12) contains a first fluid (14), having a first index of refraction and having a first density. The sealed capsule (12) contains a second fluid (16), having a second index of refraction, the second index of refraction being greater than the first index of refraction. The second fluid (16) has a second density that is not equal to the first density. A bobbin (18) is contained in the sealed capsule (12). A fiber optic core (20) is wrapped around the bobbin (18). The fiber optic core (20) has a core index of refraction. The core index of refraction is less than the second index of refraction and greater than the first index of refraction. The fiber optic core (20) has a first end (22) and a second end (24) outside the sealed capsule (12).

REFERENCES:
patent: 4057719 (1977-11-01), Lewis
patent: 4121884 (1978-10-01), Greenwood
patent: 4245886 (1981-01-01), Kolodzey
patent: 4384761 (1983-05-01), Brady et al.
patent: 4505539 (1985-03-01), Auracher
patent: 4615580 (1986-10-01), Mayer
patent: 5101449 (1992-03-01), Takeuchi
patent: 5311410 (1994-05-01), Hsu
patent: 5434756 (1995-07-01), Hsu
patent: 5438638 (1995-08-01), Anderson

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