Abstract
Wavelength conversion by four-wave mixing (FWM) in traveling-wave amplifiers (TWAs) has several advantages, including continuous tuning of the input and output wavelengths, very high speed operation, as well as wavelength mapping in a manner totally transparent to the modulation format. The attainable conversion efficiency in these devices is of obvious practical importance for system applications, but it is a complicated function determined in part by several ultrafast mechanisms known to contribute to four-wave mixing, including several intraband scattering mechanisms. For this reason, any accurate estimate of conversion efficiency must combine modeling with actual wide-band FWM spectral measurements.
© 1994 Optical Society of America
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