Optical fiber with a lens

Details Optical fiber with a lens Optical fiber with a lens

2007-05-22

2007-05-22

Font, Frank G. (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

C385S033000

Reexamination Certificate

active

10885318

ABSTRACT:
An optical fiber with a lens, obtained by fusion-coupling a multi-mode optical fiber to a tip of a single-mode optical fiber or polarization maintaining optical fiber, and working the tip of the multi-mode optical fiber, to form a spherical portion at the tip. In this case, the radius of curvature of the spherical portion is set to be larger than the maximum value of the expanded spot size. Furthermore, the length of the multi-mode optical fiber is set based on the correlation depending on said length and said radius of curvature for obtaining the minimum spot size at the focal position.

REFERENCES:
patent: 4099832 (1978-07-01), Warner, Jr.
patent: 5774607 (1998-06-01), Shiraishi et al.
patent: 6130972 (2000-10-01), Shiraishi et al.
patent: 2001/0048782 (2001-12-01), Teng et al.
patent: 2003/0165292 (2003-09-01), Bhagavatula et al.
patent: 2004/0126059 (2004-07-01), Bhagavatula et al.
patent: 2000-304965 (2000-11-01), None

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