Title :
Wavelength-tunable electrooptic polarization conversion in birefringent waveguides
Author :
Heismann, Fred ; Aferness, R.C.
Author_Institution :
AT&T Bell Lab., Holmdel, NJ, USA
fDate :
1/1/1988 12:00:00 AM
Abstract :
Wavelength-tunable, electrooptic polarization conversion in a birefringent waveguide accomplished with a multiple cascade of alternating TE←→TM mode converter and TE/TM phase shifter sections is analyzed. Such polarization converters have been demonstrated in LiNbO3 and have been used as electrooptically tunable narrowband (Δλ⩽λ0/1000) wavelength filters with tuning ranges of at least λ0/200. It is shown that the polarization converter requires only two independent drive voltages and provides arbitrary polarization transformations from any general input polarization to any desired output polarization with simultaneous wavelength tunability. The device is characterized by its overall transfer matrix and the optical bandwidths and tuning ranges for various electrode geometries
Keywords :
birefringence; electro-optical devices; integrated optics; light polarisation; lithium compounds; optical waveguides; LiNbO3; birefringent waveguides; drive voltages; electrooptic polarization conversion; mode converter; optical bandwidths; phase shifter sections; polarization converters; transfer matrix; tunable narrowband wavelength filters; tuning ranges; wavelength-tunable polarisation conversion; Birefringence; Electrooptical waveguides; Filters; Narrowband; Optical polarization; Optical waveguides; Phase shifters; Tellurium; Wavelength conversion; Wavelength converters;
Journal_Title :
Quantum Electronics, IEEE Journal of
