Abstract
Thermo-optic coefficients of the extraordinary effective refractive index in integrated optical channel waveguides in LiNbO3 have been measured with high accuracy by Mach-Zehnder and Fabry-Perot interferometer techniques. Single mode titanium-indiffused and single mode annealed proton-exchanged (APE) channel waveguides were found to have the same value as it is known for the substrate material. Multimode proton-exchanged (PE) channel waveguides specially designed for maximum field overlap to the APE waveguides show a reduction of the thermo-optic coefficient to one-fifth with negative sign. Phase shift dependent on temperature was examined in APE channel waveguides containing such a strip-shaped multimode PE segment. Possible phase-compensated wavelength sensor applications are proposed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Pure and Applied Optics: Journal of the European Optical Society Part A
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
