Polarization Independent Electro-Optically Tunable Narrow-Band Wavelength Filter.
01 January 1988
We propose and demonstrate the first polarization independent electro-optically tunable wavelength filter with single-mode waveguides. The Ti:LiNbO sub 3 filter utilizes narrow-band electro-optic TE->TM conversion and employs TE/TM polarization splitters in the input and output waveguides. The filter operates at 1.52microns with a bandwidth of only 12angstroms and can be electro-optically tuned over at least 110angstroms at a tuning rate of 0.55angstroms/V.