Asymmetric optical resonator, optical devices having the asymmetric optical resonator and use

摘要

An asymmetric optical resonator (10) comprising: a waveguiding element (13) having a cone-like shape forming a closed loop, a first circumference of the loop being different from a second circumference, the first circumference at one end of the loop in a closed loop a cavity axis (15) perpendicular plane, the second circumference is measured at the opposite end of the loop in a plane perpendicular to the cavity axis, wherein an effective refractive index of the waveguiding element (13) changes along a circumferential direction of the loop.