Abstract

We report a new type of waveguide polarizer that utilizes surface plasmon modes localized in nanometer-size silver particles to polarize light. Polarization is due to selective excitation of a lossy surface plasmon mode in the silver. Planar waveguides have been fabricated by a K⁺ −Na⁺ ion-exchange process in a glass composite containing elongated silver particles. Both TE- and TM-pass polarizers have been fabricated with extinction ratios of >50 dB/100 μm at 836 nm. Propagation losses for the pass axis were <0.2 dB/100 μm. The polarizing properties are modeled by an effective medium theory.

© 1992 Optical Society of America

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