Affiliation:
1. School of ICT, Gautam Buddha University , Greater Noida , India
Abstract
Abstract
The main problem with optical planar waveguide is thermal stress which arises when layers inside the planar waveguide get fused together with different coefficient of thermal expansion (CTE) and due to variation in thermal properties, the problem of thermally induced strain and birefringence occurs inside the waveguide glass layer. In proposed work, the mathematical analysis of thermal induced stress and the thermal strain in waveguide glass layer is calculated. ‘C’ software is used for analysis of an optical planar waveguide to calculate the thermal stress. By using material properties of Invar (64 % iron-36 % nickel alloy) and silicon nitride (Si3N4) an optical planar waveguide is designed. Here when silicon nitride (Si3N4) is used as a cladding layer and Invar (64 % iron-36 % nickel alloy) as a core layer in an optical planar waveguide, the problem of birefringence get eradicated as zero thermal stress was achieved.
Subject
Electrical and Electronic Engineering,Condensed Matter Physics,Atomic and Molecular Physics, and Optics
Reference19 articles.
1. Zhao, X, Xu, YZ, Li, C. Thermal strain analysis in optical planar waveguides. IEEE Photon Technol Lett 2003;15:398–400. https://doi.org/10.1109/lpt.2002.807924.
2. Canning, J, Aslund, M, Ankiewiez, A, Dainese, M, Fernando, H, Sahu, JK, et al.. Birefringence control in plasma enhanced, chemical vapour deposition planar waveguides by ultraviolet irradiation. Appl Opt 2000;39:4296–9. https://doi.org/10.1364/ao.39.004296.
3. Canning, J, Aslund, M. Birefringence compensation improved fringe contrast and trimming in an integrated asymmetric Mach Zehnder interferometer using mid-IR laser processing. Opt Mater 2000;14:175–83. https://doi.org/10.1016/s0925-3467(99)00127-5.
4. Canning, J. Birefringence control in planar waveguides using doped top-layers. Opt Commun 2001;191:225–8. https://doi.org/10.1016/s0030-4018(01)01118-x.
5. Nadler, C, Lanker, M, Wildermuth, E, Hunziker Melchior, WH. Polarization insensitive wavelength multiplexers using stress release grooves. 24th European Conference on Optical Communication. ECOC ’98 (IEEE Cat. No. 98TH8398) 1998;129–30.