Thyagarajan K, Bourbin Y, Enard A, Vatoux S, Papuchon M
Opt Lett. 1985 Jun 1;10(6):288-90. doi: 10.1364/ol.10.000288.
We show experimentally the presence of TM mode absorption resonance as a function of buffer thickness in planar metal-clad optical waveguides. Using Hg as the metal cladding, we have measured more than 20 dB of loss for the TM mode over about 1-mm length in a Ti-indiffused LiNbO(3) waveguide.