Resonance wavelength in planar multilayer waveguides: control and complete suppression of temperature sensitivity

We report the possibility of realizing complete thermal stabilization of the resonance transparency wavelength λchar in a planar multilayer tilted cavity waveguide. When the positive temperature coefficient of the refractive index dn/dT is a nonlinear function of the alloy composition, which is the case in most semiconductor alloys, there exists the possibility of achieving complete control of the resonance transparency wavelength. The thermal shift dλchar/dT can be positive, zero or negative. Our result applies quite generally to optical waveguides, etalons, filters, semiconductor lasers and optical amplifiers, potentially extending the performance of the devices and their application range.