Hello,

I am trying to diffuse Ti strips into Lithium Niobate.  The strips run
from approximately 3 -10 um.  After diffusion (which I have run
different permutations ranging from 1-9h and 900-1050C) in a wet
nitrogen environment the waveguides completely disappear.  I know that
the index delta should be approximately .01 so they should be difficult
to see, but I can't seem to see anything at all.  I was wondering if
anyone has had this problem before or can help me find a solution.  Thanks.

Jeff Price
Research Assistant, University of Delaware
price@ee.udel.edu