Optical waveguides – With optical coupler – Plural
Patent
1995-12-29
1998-04-07
Ullah, Akm E.
Optical waveguides
With optical coupler
Plural
385 27, 385122, 359161, 359173, 372 6, G02B 628, H04B 1000
Patent
active
057374600
ABSTRACT:
A method for launching a high-power signal into anomalous-dispersion fiber without suffering excess spectral broadening and waveform distortion. A high-power signal is launched as very short optical solitons, typically with a pulse width of approximately 1 to 10 ps. The pulse width of the solitons will broaden adiabatically (or nearly adiabatically) as they propagate down the anomalous-dispersion fiber as the average power of the soliton decreases. At the same time, the optical spectrum will narrow. After some distance of travel, when the width of the pulses have broadened to a suitable duration and the average power has decreased to a point where penalties from nonlinearities are insignificant, the pulses enter a significantly linear propagation regime with first order dispersion near zero. A dispersion-shifted fiber may be used or any additional dispersion can be compensated at the receiver. Consequently, no further significant broadening of the spectrum occurs when the signal is received at the receiver. Additionally, the initial wide spectrum of the solitons will result in a high stimulated Brillouin scattering (SBS) threshold reducing the need for artificial broadening of the spectrum.
REFERENCES:
patent: 4406516 (1983-09-01), Hasegawa
patent: 4558921 (1985-12-01), Hasegawa et al.
patent: 4918751 (1990-04-01), Pessot et al.
patent: 5035481 (1991-07-01), Mollenauer
patent: 5058974 (1991-10-01), Mollenauer
patent: 5400165 (1995-03-01), Gnauck et al.
patent: 5561553 (1996-10-01), Marcerou et al.
patent: 5574590 (1996-11-01), Edagawa et al.
patent: 5583959 (1996-12-01), Nakazawa et al.
patent: 5600479 (1997-02-01), Evans
Y. Miyamoto, T. Kataoka, A. Sano, K. Hagimoto, K. Aida, and Y. Kobayashi, "10 Gbit/s, 280 Km nonrepeatered transmission with suppression of modulation instability," Electronics Letters, vol. 30, No. 10, pp. 797-798, May 1994.
A. Sano, Y. Miyamoto, T. Kataoka, H. Kawakami and K. Hagimoto, "10 Gbit/s 300 km repeaterless transmission with SBS suppression by the use of the RZ format", Electronic Letters, vol. 30, No. 20, pp. 1694-1695, Sep. 1994.
Gautheron, "Experimental Investigation of Stimulated Brillouin Scattering and Self-Phase Modulation Effects on Long Distance 2.5 Gbit/s Repeaterless Transmission", pp. 109-112, Eur. Conf. on Opt. Comms. (ECOC) Switz. 1993.
P.B. Hansen, L. Eskildsen et al., "529 km Unrepeated Transmission at 2.488 Gbit/s using Dispersion Compensation Forward Error Correction, and Remote Post-and Pre-Amplifiers Pumped by Diode-pumped Raman Lasers" Electronic Letters, vol. 31, No. 17, Aug. 1995.
P.B. Hansen, L. Eskildsen, S.G. Grubb and et al., "10 Gb/s, 411 Repeaterless Transmission Experiment Employing Dispersion Compensation And Remote Post- And Pre-Amplifiers", ECOC, Brussels, Belgium, Sep., 1995.
Damen Theodoor Charlouis
Hansen Per Bang
Haus Herman Anton
Stolen Rogers Hall
Lucent Technologies - Inc.
Sanghavi Hemang
Ullah Akm E.
LandOfFree
Applications of solitons in transmission systems employing high does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Applications of solitons in transmission systems employing high , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Applications of solitons in transmission systems employing high will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-21342