Figure 6
From: Tuning of silicon nitride micro-cavities by controlled nanolayer deposition
Experimental tuning of the resonance wavelength for Si3N4 ring cavity clad with 300 nm of SiO2 by local heating with 532 nm laser. (a) Spectral profiles of the cavity resonances for different laser powers; (b) the dependence of reversible shift of the central resonance wavelength on applied pump powers of heating 532 nm laser. The red dotted line is a fit indicating the linear dependence of the refractive index (tuning) on temperature.
