You can consider the use of perfluoronated polymers. An example I came
across is CYTOP from AGC. It has high transmittance >200 nm, especially
the grade made especially for high UV transmittance.

Dirk Renckens
Chem Eng PhD Candidate
Delft University of Technology

-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: 25 March 2009 07:28
To: [email protected]
Subject: [mems-talk] polymer which has transmission in UV

Hi
   i am using SU8 polymer for optical waveguide but it has very high
absorbance in UV region (280nm). I want to use 280nm wavelength for my
optical waveguide. Can someone suggest any polymer which has good
transmission at 280nm and can be used for fabrication.
--
Kamlesh Pawar
M.Tech (Biomedical Engg)
Mob :+919870062960
IIT-Bombay