Optical communication device

Optical communications – Transmitter and receiver system – Including optical waveguide

Reexamination Certificate

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C398S079000, C398S147000, C398S148000, C398S158000, C398S159000, C398S066000, C398S067000, C398S068000, C398S070000, C398S071000, C398S072000, C398S082000, C398S140000, C385S123000, C385S124000, C385S001000, C385S126000, C385S127000

Reexamination Certificate

active

07127178

ABSTRACT:
An optical extending device for use in transmission of optical signals which comprise at least one sequence of periodic optical signals, said optical device comprising: a first fiber optic having a characteristic dimensional propagation coefficient equal to β1and adapted to be connected to a single mode second fiber optic having a length equal to L0and a characteristic dimensional propagation coefficient equal to β0, wherein Lp, the length of said first fiber optic is substantially equal to {[T2/Π−L0*β0]/β1}*{1−MOD(L0/{T2/Π−L0*β0]/g(b)}} and wherein: n is an integer 1, 2, 3 . . . and is selected in accordance L0, the length of the single mode second fiber optic; T is a time period of the periodic optical signals; and MOD is the remainder obtained from dividing 10by {[T2/Π−L0*β0]/β1}.

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Azana et al., “Technique for Multiplying the Repetition Rates of Periodic Trains of Pulses by Means of a Temporal Self-Imaging Effect in Chirped Fiber Gratings”,Optics Letters, vol. 24, No. 23, pp. 1672-1674 (Dec. 1, 1999).
Indebetouw, “Quasi-Self-Imaging using Aperiodic Sequences”,J. Opt. Soc. Am. A, vol. 9, No. 4 pp. 549-558 (Apr. 1992).
Jannson et al., “Temporal Self-Imaging Effect in Single-Mode Fibers”,J. Opt. Soc. Am., vol. 71, No. 11, pp. 1373-1376 (Nov. 1981).
Maeda et al., “Transmission Experiment Over 4,000 km in an Optical WDM Network Using Wavelength Multiplexers and Demultiplexers”, pp. 113-117 fromCore Networks and Network Management, edited by D.W. Faulkner and A.L. Harmer, IOS Press, 1999.

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