Optical waveguides – Optical fiber waveguide with cladding
Reexamination Certificate
2006-11-21
2006-11-21
Bovernick, Rodney (Department: 2874)
Optical waveguides
Optical fiber waveguide with cladding
C385S028000
Reexamination Certificate
active
07139457
ABSTRACT:
In an optical transmission path including multimode optical fibers, modal dispersion is reduced so that signal light can be transmitted at high speed and across a broad band, at low-cost and over a long distance. To reduce modal dispersion, when the transmission path is constructed by coupling a plurality of multimode optical fibers, a length ratio for the multimode optical fibers that obtains the maximum band of the optical transmission path is determined, and the multimode optical fibers are coupled according to this length ratio. The multimode optical fibers that are used have specific refractive index profiles as mode dispersion-compensating fibers. The compensated fiber and the mode dispersion-compensating fiber are coupled with specific lengths.
REFERENCES:
patent: 4205900 (1980-06-01), Eve
patent: 6363195 (2002-03-01), Abbott, III et al.
patent: S49-102356 (1974-09-01), None
patent: S53-131054 (1978-11-01), None
patent: 2001-052205 (2001-02-01), None
patent: WO 99/22471 (1999-05-01), None
W. F. Love, “Bandwidth Spectral Characterization of Modal Compensation in Multimode Optical Fibers”; Proceedings of European Conference on Optical Communication 1981 (Denmark), Electromagnetics Institute, Technical University of Denmark, 1981, vol. 4, pp. 4-1 to 4-4.
L. Raddatz, et al., “An Experimental and Theoretical Study of the Offset Launch Technique for the Enhancement of the Bandwidth of Multimode Fiber Links”; Journal of Lightwave Technology, vol. 16, No. 3, Mar. 1998, pp. 321-331.
K. Okamoto, “Comparison of calculated and measured impulse responses of optical fibers”; Applied Optics, vol. 18, No. 13, Jul. 1, 1979, pp. 2199-2206.
IEC 60793-2-10 Optical Fibers Part 2-10: Product specifications—Sectional Specification for category A1 multimode fibers, International Electrotechnical Commission, Mar. 2002 (can be found in the specification).
Guan Ning
Habu Shinji
Harada Koichi
Himeno Kuniharu
Takenaga Katsuhiro
Bovernick Rodney
Fujikura Ltd.
Rojas Omar
LandOfFree
Method for compensating modal dispersion in multimode... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for compensating modal dispersion in multimode..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for compensating modal dispersion in multimode... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3628769