The concept of having the effective refractive index of an optical waveguide mode be independent of temperature is introduced. It is shown that this concept should be realizable with a Corning 7059 glass thin-film waveguide supported on a SiO2-Si substrate for a waveguide thickness of 0.37 µm. Measurements of effective refractive index as a function of temperature confirm this prediction of temperature independence in that they show a very small variation with temperature for a 0.35-µm thick waveguide in comparison with that for a 0.98-µm thick waveguide.
© 1981 Optical Society of America
S. L. Chen and J. T. Boyd, "Temperature-independent thin-film optical waveguide," Appl. Opt. 20, 2280-2283 (1981)