Large effective area fiber

Details Large effective area fiber Large effective area fiber

2008-05-05

2009-06-30

Stahl, Mike (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S125000

Reexamination Certificate

active

07555187

ABSTRACT:
An optical fiber according to an embodiment of the present invention comprises: a glass core extending from a centerline to a radius R1wherein R1is greater than about 5 μm; a glass cladding surrounding and in contact with the core, the cladding comprising: (i) a first annular region extending from the radius R1to a radius R2, the first annular region comprising a radial width, W2=R2−R1, (ii) a second annular region extending from the radius R2to a radius R3, and comprising a radial width, W3=R3−R2, and (iii) a third annular region surrounding the second annular region and extending from the radius R3to an outermost glass radius R4; wherein the core comprises a maximum relative refractive index, Δ1MAX, relative to the third annular region, and wherein Δ1MAXis greater than about 0.1% and less than about 0.3%; the first annular region has a refractive index delta Δ2(r) is less than about 0.025%; wherein the second annular region comprises a minimum relative refractive index, Δ3MIN, relative to the third annular region;wherein Δ1MAX>Δ2MAX>Δ3MIN, and Δ2MIN>Δ3MIN<0; andwherein the core and the cladding provide a fiber with cable cutoff less than 1500 nm, and an effective area at 1550 nm greater than 95 μm2and bend loss of ≦0.5 dB/turn on a 20 mm diameter mandrel.

REFERENCES:
patent: 5155792 (1992-10-01), Vali et al.
patent: 6335995 (2002-01-01), Kato et al.
patent: 6418258 (2002-07-01), Wang
patent: 6477305 (2002-11-01), Berkey et al.
patent: 6801699 (2004-10-01), Bickham et al.
patent: 6904218 (2005-06-01), Sun et al.
patent: 6904772 (2005-06-01), Berkey et al.
patent: 7139458 (2006-11-01), Koh et al.
patent: 7272289 (2007-09-01), Bickham et al.
patent: 7313312 (2007-12-01), Kimball et al.
patent: 7433566 (2008-10-01), Bookbinder et al.
patent: 7450806 (2008-11-01), Bookbinder et al.
patent: 7450807 (2008-11-01), Bickham et al.
patent: 2002/0186941 (2002-12-01), Hsu et al.
patent: 2005/0244120 (2005-11-01), Mishra
patent: 2006/0120678 (2006-06-01), Manyam et al.
patent: 2007/0098339 (2007-05-01), Bringuier et al.
patent: 2007/0258686 (2007-11-01), De Montmorillon et al.
patent: 2008/0056654 (2008-03-01), Bickham et al.
patent: 2008/0056658 (2008-03-01), Bickham et al.
patent: 1477831 (2004-11-01), None
patent: 1978383 (2008-10-01), None
patent: WO01/47822 (2001-07-01), None
“Single-Mode Fiber Optics”, Principles and Applications; Second Edition, Revised and Expanded; Luc B. Jeunhomme, Photonetics; p. 39-44.

Affiliated with

Also associated with

Rating

Large effective area fiber does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Large effective area fiber, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large effective area fiber will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4065889