TE-TM MODE CONVERTER USING OPTICALLY-ACTIVE POLYMER

A novel TE-TM mode converter using optically active polymer: poly-l-me nthylmethacrylate (PMtMA) was studied theoretically and experimentally . In a three-layered slab waveguide consisting of the PMtMA core layer on a fused quartz substrate, a low-loss TE(o)-TM(o) mode conversion w ith an efficiency of 60 to 70% was easily obtained for the first time at a wavelength of 441.6 nm. The method to achieve a phase-matched ope ration of this polymer TE-TM mode converter was also discussed.