Multiple-channel all-optical TDM-WDM converter and multiple-chan

Details Multiple-channel all-optical TDM-WDM converter and multiple-chan Multiple-channel all-optical TDM-WDM converter and multiple-chan

1997-07-14

2000-02-08

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359138, 359140, 359156, H04J 1402, H04J 1408

Patent

active

060233605

ABSTRACT:
A multiple-channel all-optical TDM-WDM converter and multiple-channel all-optical TDM demultiplexer which is able to simultaneously and spatially separate optical signal pulse trains of each channel from a TDM optical signal pulse train is structured without using a multistage-structure constitution. A control optical source 10 generates a control optical pulse train containing N optical frequencies, which is synchronous with optical signal pulse trains of N channels which are to be divided from a TDM optical signal pulse train wherein optical signal pulse trains of N channels have been multiplexed in time series. An optical wavelength multiplexer 11 combines the time-division-multiplexed optical signal pulse train and the control optical pulse train. The light output from an optical wavelength multiplexer 11 is input to a nonlinear material 12, which induces a four-wave mixing effect between the control optical pulse stream having the N optical frequencies and optical signal pulse trains of N channels, and outputs a frequency-converted optical pulse train which is the combination of N optical pulse trains having different optical frequencies. An optical wavelength demultiplexer 13 spatially divides the N types of optical pulse trains according to each optical frequency from the frequency-converted optical pulse train.

REFERENCES:
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