Optical wavelength converter and optical wavelength division multiplexing communication system using the same
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United States of America Patent
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-
Oct 22, 2002
Grant Date -
Dec 27, 2001
app pub date -
Dec 29, 2000
filing date -
Jun 15, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Optical wavelength converter having a configuration whereby both RZ code and NRZ code can be handled without producing the duty deterioration in the waveform. The optical wavelength converter provided for converting an optical signal in a first optical wavelength band into an optical signal in a second optical wavelength band includes an optical-to-electrical converter for converting an input optical signal into an electric signal; an electrical-to-optical converter for converting the electric signal into an optical signal; and a duty control circuit connected between the optical-to-electrical converter and the electrical-to-optical converter for controlling the duty of the electric signal having been converted by the optical-to-electrical converter according to RZ/NRZ code information.
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