POLARIZATION-INSENSITIVE WAVELENGTH CONVERSIONS BY A LINBO3 WAVE-GUIDE USING A MULTIRING CONFIGURATION

A novel configuration is proposed for polarization insensitive wavelen gth conversions using a LiNbO3 waveguide with a periodically domain in verted structure. The proposed configuration consists of multiple ring s, which are connected by a polarization sensitive wavelength converte r such as the LiNbO3 waveguide described. One ring containing a pump l ight source is used to pump the wavelength converter bidirectionally, while the other rings containing a polarization beam splitter and a 90 degrees polarization rotator are used to couple in the input signal a nd extract the converted light. The proposed method is proven experime ntally by the wavelength conversion based on sum frequency generation.