Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-09-26
2000-09-26
Lefkowitz, Edward
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359174, 359333, 359339, G02B 600
Patent
active
061249599
ABSTRACT:
An optical wavelength-division multiplexing transmission system includes an optical wavelength-division multiplexing transmitter, an optical wavelength-division multiplexing receiver, and a plurality of optical amplifiers disposed on an optical transmission line connecting the transmitter and receiver. Optical filters are disposed on said optical transmission line for flattening the pass band gain characteristics of a predetermined number of optical amplifiers. It is desirable that one optical filter is disposed for every one to thirty amplifiers. The optical wavelength-division multiplexing transmission system of the present invention can thus flatten accumulated gain characteristics of the amplifiers so that several different wavelengths can be transmitted without attenuation.
REFERENCES:
patent: 5060301 (1991-10-01), Nishimura
patent: 5083874 (1992-01-01), Aida et al.
patent: 5260823 (1993-11-01), Payne et al.
patent: 5283686 (1994-02-01), Huber
patent: 5446812 (1995-08-01), Hirst
patent: 5471334 (1995-11-01), Masuda et al.
patent: 5504609 (1996-04-01), Alexander et al.
patent: 5579420 (1996-11-01), Fukushima
patent: 5861980 (1999-01-01), Ono
English Translation of Japanese Patent Office Action for Japanese Patent Application 7-249890 dated Sep. 24, 1997.
English Translation of Japanese patent Office Action for Japanese Patent Application 7-249890 dated Dec. 15, 1998.
J. Aspell, et al, "Erbium Doped Fiber Amplifiers for Future Undersea Transmission Systems," 8352 IEEE LCS, The Magazine of Lightwave Communication Systems 1 (1990) Nov., No. 4, pp. 63-66.
IEEE Photonics Technology Letters, Ebrium-Doped Fiber Amplifier with Flattened Gain Spectrum, Tachibana et al., Feb. 1991.
Electronic Letters, Ebrium doped fibre amplifier with dynamic gain flatness for WDM, Nilsson et al., Aug. 1995.
Lefkowitz Edward
NEC Corporation
LandOfFree
Optical wavelength-division multiplexing transmission system 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 wavelength-division multiplexing transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical wavelength-division multiplexing transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2104881