Optical fiber sensor having an active core

Optical waveguides – Optical fiber waveguide with cladding

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

385126, 385127, 385128, 385142, 372 6, G02B 616, G02B 622

Patent

active

052492516

ABSTRACT:
An optical fiber is provided comprising an active fiber core which produces waves of light upon excitation. A factor ka is identified and increased until a desired improvement in power efficiency is obtained. The variable "a" is the radius of the active fiber core and "k" is defined as 2.pi..lambda., wherein .lambda. is the wavelength of the light produced by the active fiber core. In one embodiment, the factor ka is increased until the power efficiency stabilizes. In addition to a bare fiber core embodiment, a two-stage fluorescent fiber is provided wherein an active cladding surrounds a portion of the active fiber core having an improved ka factor. The power efficiency of the embodiment is further improved by increasing a difference between the respective indices of refraction of the active cladding and the active fiber core.

REFERENCES:
patent: 4560248 (1985-12-01), Cramp et al.
patent: 4790619 (1988-12-01), Lines et al.
patent: 4824206 (1989-04-01), Klainer et al.
patent: 4834496 (1989-05-01), Blyler, Jr. et al.
patent: 4852967 (1989-08-01), Cook et al.
patent: 4880752 (1989-11-01), Keck et al.
A. Tanaka et al., "New plastic optical fiber using polycarbonate core and fluorecence-doped fiber for high temperature use", Fiber and Integrated Optics, vol. 7, (1987), pp. 139-158.
H. Sawada et al., "Plastic optical fiber doped with organic fluorescent material", Fiber Optic Systems for Mobile Platgorms II, SPIE, vol. 989, 1988, pp. 133-139.
Fluorescent Plastic Optical Fiber, Fujitsu Limited Product Bulletin (Published as of 1991), 4 pages.
K. Kurosawa et al., "Diagnostic technique for electrical power equipment using fluorescent fiber", (Article published as of 1991), 7 pages.
Egalon, Claudio O., "Injection efficiency of bound modes", NASA Contractor Report 4333, Nov. 1990.
Marcuse, D., "Launching light into fiber cores from sources located in the cladding", J. of Lightwave Tech., vol. 6, No. 8, Aug. 1988, pp. 1273-1279.
Lewis, N. E. et al., Fiber Optic Systems for Mobile Platforms II, SPIE vol. 989, "Plastic optic fiber doped with organic fluorescent materials", Sep. 1988, pp. 133-139.
Tanaka, A. et al., "New plastic optical fiber using polycarbonate core and fluorescence-doped fiber for high temperature use", Fiber and Integrated Optics, vol. 7, Aug. 1987, pp. 139-158.
Lieberman, R. A. et al., "Intrinsic fiber optic chemical sensor based on two-stage fluorescence coupling", SPIE vol. 990, Chemical, Biochemical, and Environmental Applications of Fibers, 1988, pp. 104-110.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Optical fiber sensor having an active core does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical fiber sensor having an active core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical fiber sensor having an active core will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2196535

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.