Abstract
In wavelength-domain-multiplexing (WDM) optical networks, wavelength conversion is a key technology for cross-connection at switching nodes.1 Nonlinear effect between lightwaves whose wavelengths are different, such as four- wave-mixing in optical fibers, cross phase modulation in semiconductor optical amplifier, and so on, are often used to obtain wavelength conversion, by which bit-stream data on a WDM channel can be copied to the other channel.2
© 2002 Optical Society of America
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