Design of Resonant-Characteristics-Monitorable Si Wavelength Filter Using Face-To-Face Loop Mirrors For Heterogeneous Integrated Tunable Lasers

Abstract

A Si wavelength filter using face-to-face loop mirrors is newly proposed. It has two resonant modes that can be excited from different access ports. By using it as an external resonator in III-V/Si hybrid lasers, the resonant characteristics in each filter can be directly monitored.