Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-04-20
1997-02-11
Boudreau, Leo
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
H04B 1000
Patent
active
056026668
ABSTRACT:
An optical wavelength multiplex transmission method uses a band around a zero dispersion wavelength of an optical fiber to compensate for waveform degradation, which is produced by a synergetic effect of self phase modulation and chromatic dispersion, to increase transmission distance and transmission rate in optical systems. The optical dispersion compensation method is performed in an optical system including a transmitter, a repeater and a receiver, which collectively transmit and receive optical information along the optical fiber. Light is transmitted within a transmissible band which is defined by an allowable dispersion value determined from a synergetic effect of self phase modulation and group velocity dispersion in the optical fiber. The transmissible band is set on a shorter wavelength side than a shorter wavelength end .lambda..theta.-.DELTA..lambda..theta. or on a longer wavelength side than a longer wavelength end .lambda..theta.+.DELTA..lambda..theta. of the zero-dispersion wavelength deviation range of the optical fiber. The zero dispersion wavelength .DELTA..theta. of the optical fiber is shifted to apparently arrange the signal light into the transmissible band to compensate for the dispersion amount of the optical transmission system.
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Ishikawa George
Miyata Hideyuki
Onaka Hiroshi
Otsuka Kazue
Sekiya Motoyoshi
Boudreau Leo
Fujitsu Limited
Mehta Bhavesh
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