Large mode area fiber for low-loss transmission and...

Details Large mode area fiber for low-loss transmission and... Large mode area fiber for low-loss transmission and...

2007-10-16

2007-10-16

Healy, Brian M. (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S123000, C385S127000, C385S141000, C385S027000, C385S028000, C372S006000, C359S341100, C359S346000

Reexamination Certificate

active

11611239

ABSTRACT:
A large mode area optical fiber includes a large diameter core (d1up to 60 μm), and a first cladding (diameter d2) wherein the difference between refractive index (n1) in the core and the first cladding (n2) is very small (Δn<0.002), thus providing a very low numerical aperture core (NA1between 0.02 and 0.06). The preferred ratio of d2/d1<2. The fiber further has a second cladding, preferably a layer of air holes, having a very low refractive index n3as compared to the core and first cladding such that the first cladding has a relatively high numerical aperture (NA2>0.4) (n3is preferably less than 1.3). The small change in refractive index between the core and inner cladding combined with a large change in refractive index between the first cladding and second cladding provides a significantly improved single mode holding waveguide.

REFERENCES:
patent: 4815079 (1989-03-01), Snitzer et al.
patent: 7050686 (2006-05-01), Farroni et al.
patent: 7062137 (2006-06-01), Farroni et al.
patent: 7116887 (2006-10-01), Farroni et al.
patent: 2002/0164137 (2002-11-01), Johnson et al.
patent: 2002/0176676 (2002-11-01), Johnson et al.
patent: 2004/0086245 (2004-05-01), Farroni et al.
patent: 2004/0096172 (2004-05-01), Bongrand et al.
patent: 2004/0240816 (2004-12-01), Oh et al.
patent: 2005/0175059 (2005-08-01), Leclair et al.

Affiliated with

Also associated with

Rating

Large mode area fiber for low-loss transmission and... 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 mode area fiber for low-loss transmission and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large mode area fiber for low-loss transmission and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3869317