GUIDED-WAVE POLARIZING BEAMSPLITTER

SEVERAL CONCEPTS FOR INTERGRATED OPTIC POLARIZATION BEAMSPLITTERS HAVE BEEN PROPOSED. HOWEVER, FOR ANY INTEGRATED OPTIC DESIGN, ACHIEVING 30 DB EXTINCTION REQUIRES A FINE TUNING MECHANISM FOR THE COUPLER. WE PROPOSE A NOVEL METHOD, USING PROTON EXCHANGE AND TITANIUM DIFFUSION IN LITHIUM NIOBATE, TO FINE TUNE A POLARIZATION SEPARATING COUPLER. THE TECHNIQUE ALLOWS MODIFYING THE TRANSFER LENGTH FOR ONE POLARIZATION WHILE LEAVING THE OTHER POLARIZATION TRANSFER LENGTH UNALTERED. IN PHASE 1, WE WILL DEMONSTRATE THE VIABILITY OF THIS CONCEPT. RAMAR CORPORATION IS UNIQUELY POSITIONED TO ACHIEVE RAPID COMMERCIALIZATION OF SUCH DEVICES SINCE WE HAVE BEEN IN THIS BUSINESS FOR FIVE YEARS, WE HAVE AN EXISTING CUSTOMER BASE FOR SUCH DEVICES AND WE ARE CURRENTLY SOLVING THE PACKAGING ISSUES THAT WIL BE EXTREMELY RELEVANT TO THIS EFFORT.