We propose the design of a novel and highly efficient all dielectric three waveguide polarization splitter based on the phenoRenon of resonant tunneling. By consideriang a glass waveguide structure with an intersediate high index guiding layer (such as a i 1 icon) we show that one can obtain extinction ratios better than -30 dB in both the outer waveguides at a particular thickness of the high index layer. The proposed configuration should be of interest in the design of inline fiber optic polarization splitters and in integrated optics. I.
"Three waveguide polarization splitter based on resonant tunneling", Proc. SPIE 1622, Emerging Optoelectronic Technologies, (16 December 1992); doi: 10.1117/12.637007; https://doi.org/10.1117/12.637007