National and Kapodistrian University of Athens Department of Informatics and Telecommunications Photonics Technology Laboratory. Key CLARITY technologies II – Four-Wave Mixing wavelength conversion. Introduction - Wavelength conversion. Wavelength conversion device. λ i. λ o. λ. λ.
Department of Informatics and Telecommunications
Photonics Technology Laboratory
Four-Wave Mixing (FWM)Cross-Phase Modulation (XPM)Cross-Gain Modulation (XGM)
Phase matching condition depends on:
High conversion efficiency and broadband operation can be achieved following specific design rules:
- Small effective mode area at the pump wavelength regime is required in order to exploit the high power of the pump field (<1μm2)
- Mode overlap close to 1 in order to maximize the non-linear interaction between the FWM fields