| 摘要 |
A tunable optical frequency comb source 200 includes a linear waveguide 215 having an input leg to couple to a pump laser. A ring microresonator 210 is evanescently coupled to the linear waveguide. The microresonator includes a ring shaped waveguide having a core material with a nonlinear refractive index to provide four-wave mixing to generate a cascade of independent laser beams at frequencies corresponding to the longitudinal modes of the microresonator. A pump laser 220 is coupled to linear waveguide 215. The device is tunable by controlling temperature of the laser 225 and microresonator 210 using independent Peltier devices. |
