Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-11-06
1998-11-17
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359158, H04B 1016
Patent
active
058384758
ABSTRACT:
A a first clock extraction device included in the receiving section of the optical regenerator recovers a receiving clock. The receiving clock follows the jitter contained in a receiving optical signal caused by fiber wavelength dispersion. The receiving optical signal is detected in synchrony with the receiving clock. A transmission section includes a transmitter for generating a transmission optical signal changed in phase in such a manner as to suppress the stimulated Brillouin scattering and a second clock extraction device for regenerating the transmission clock not following the jitter. The data of the receiving optical signal is processed at a processing unit, and intensity-modulated on the basis of the data thus processed. The timing of this modulation is synchronized with the transmission clock. The receiving clock is synchronized with the jitter, and therefore no logic error occurs. Since the transmission clock does not follow the jitter, the jitter is prevented from accumulating.
REFERENCES:
patent: 4736120 (1988-04-01), Foster
patent: 5392147 (1995-02-01), Kaede et al.
Funada Takashi
Hagimoto Kazuo
Takeyari Ryoji
Wakai Yukihiko
Hitachi , Ltd.
Nippon Telegraph and Telephone Corporation
Pascal Leslie
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