Optical Waveguide Based on Glass by Technology of K+-Na+ and Ag+-Na+ Two-step Ion-exchange
K+-Na+和Ag+-Na+两步离子交换技术制作玻璃基光波导研究

A buried waveguide was obtained by the two-step of K+-Na+ and Ag+-Na+ ion-exchange.This method can restrain the growth of silver clusters appearing during the process of Ag+-Na+ ion-exchange,and then the loss of waveguide can be reduced.In this case the symmetry of waveguide section and the performance of optical devices can be improved.A 1×8 optical splitter is fabricated,its average insert loss is 10.9 dB.