Planar 1/8 splitter in glass by photoresist masked silver film ion exchange

Fabrication of singlemode glass waveguide devices by silver film ion exchange with standard photoresist as a mask for the ion exchange is proposed. The process uses the advantages of the silver film ion exchange and the simple and accurate patterning when photoresist is used directly as a mask. As a component example, a singlemode 1/8 power splitter is fabricated and measured.