Extremely high waveguide-optical amplifier coupling efficiencies measured on passive test structures

摘要

It is pointed out that extremely high coupling efficiencies can be achieved on passive structures which simulate an integrated waveguide amplifier. The bundle integrated guide (BIG) configuration exhibits a coupling efficiency of 95% per interface, which is in perfect agreement with the theoretical prediction. This coupling efficiency has been determined by measuring 38 monolithically integrated BIG structures.