Single-step RIE fabrication process of low loss InP waveguide using CH 4 /H 2 chemistry

Single-step C H4 / H2 -based reactive ion etching (RIE) process, without alternating O2 plasma treatment, has been developed with virtually no polymer buildup on the etched surface. InP ridge waveguides up to 1.9 μm high were etched without any mid- or