Optical: systems and elements – Optical amplifier – Dispersion compensation
Reexamination Certificate
2006-01-10
2006-01-10
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
Dispersion compensation
C359S334000
Reexamination Certificate
active
06985285
ABSTRACT:
An optical transmission system that can reduce a difference of Raman gain between each of upstream and downstream lines, in a system configuration in which Raman amplification is performed for both the upstream and downstream lines by a common Raman amplifier. Transmission sections are provided for both the upstream and downstream lines, and when pumping light, generated by a common pumping light source, is supplied to the transmission sections of the one line and the transmission sections of the other line, the negative dispersion fibers having different wavelength dispersion values are applied to the positive and negative hybrid transmission paths used for the transmission sections of each line, so that the length of each negative dispersion fiber is made substantially equal to each other.
REFERENCES:
patent: 6519078 (2003-02-01), Miyakawa et al.
patent: 6532102 (2003-03-01), Kobayashi et al.
patent: 6574038 (2003-06-01), Tanaka et al.
patent: 6606188 (2003-08-01), Shimojoh
patent: 6614586 (2003-09-01), Hayee et al.
patent: 6618195 (2003-09-01), Shieh et al.
patent: 6687047 (2004-02-01), Clark et al.
patent: 6693740 (2004-02-01), Gray et al.
patent: 6771864 (2004-08-01), Kubo et al.
patent: 2002/0105719 (2002-08-01), Tanaka et al.
patent: 2002/0131160 (2002-09-01), McNicol
patent: 2003/0011874 (2003-01-01), Nakamoto et al.
patent: 08-018540 (1986-01-01), None
patent: 8-116307 (1996-05-01), None
patent: 8-331049 (1996-12-01), None
patent: WO 02/19576 (2002-03-01), None
M. Murakami et al., “Long-Haul 16 x 10 WDM Transmission Experiment Using Higher Order Fiber Dispersion Management Technique”, ECOC '98, pp. 313-314. 1998.
C. R. Davidson, et al., “1800 Gb/s Transmission of One Hundred and Eighty 10 Gb/s WDM Channels Over 7,000 km using the Full EDFA C-Band” OFC 2000, PD25.
M. Murakami, et al., “Long-Haul WDM Transmission Using Higher Order Fiber Dispension Management”, Journal of Lightwave Technology, vol. 18, No. 9, Sep. 2000 (pp. 1197-1204).
French Search Report for corresponding French Application dated Jul. 23, 2004.
Fujitsu Limited
Hughes Deandra M.
Keith Jack
Staas & Halsey , LLP
LandOfFree
Optical transmission system using Raman amplification 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 transmission system using Raman amplification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical transmission system using Raman amplification will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3587650