Low loss etched Ge33As12Se55 Chalcogenide waveguides

Low Loss Etched Ge33As12Se55 Chalcogenide Waveguides Steve Madden, Duk Choi, Andrei Rode, Barry Luther-Davies Centre for Ultra-high Bandwidth Devices & Optical Systems, Laser Physics Centre, Research School of Physical Science and Engineering, Australian National University, Canberra, Australia. Contact: [email protected] Abstract — We report on the fabrication and optical properties of etched Ge33As12Se55 chalcogenide planar waveguides. These show optical losses as low as 0.27dB/cm at 1550nm, the lowest ever reported, and are therefore of significant interest for planar non-linear optics.

I. INTRODUCTION Chalcogenide glasses have long been considered promising candidates for planar non-linear optical (NLO) waveguide devices due to their large NLO coefficients and low optical losses [e.g. 1]. Many of the glass compositions most interesting from an NLO perspective are however low glass transition (