Flexible chalcogenide glass microring resonator for mid-infrared emission

Emerging applications in communication, sensing, medical and many other fields call for on-chip microring laser, however, the method to make it work at mid-infrared still need to be explored. In this paper, a microring resonator integrated in flexible substrate is designed and evaluated, with high Q-factor (similar to 10(5)) at pump and signal wavelengths, achieving emission in mid-infrared (3.6 mu m) using rare earth doped chalcogenide glass. Furthermore, the strain-optical coupling in multilayer flexible materials is numerically verified, and a 0.3 nm/mu epsilon resonance wavelength shift is achieved by local neutral axis theory, without significant loss of flexible device performance.