Thermal stress effects on the mode field characteristics of arrayed waveguides

Huamao Huang; Dexiu Huang; Wen Liu; Kan Yu

doi:10.1117/12.756551

8 January 2008 Thermal stress effects on the mode field characteristics of arrayed waveguides

Huamao Huang, Dexiu Huang, Wen Liu, Kan Yu

Proceedings Volume 6838, Optoelectronic Devices and Integration II; 68381R (2008) https://doi.org/10.1117/12.756551
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Thermal stress effects on the mode field characteristics of arrayed waveguides are studied precisely by finite element method (FEM) with plain strain model. The amplitudes of E_x and E_y are comparable for the E^x₁₁ mode and the E^y₁₁ mode in a homogeneous and isotropic optical channel waveguide. Considering the elasto-optic effect, the refractive indices are inhomogeneous and anisotropic. It is shown that the amplitude of E_y for the E^x₁₁ mode and that of E_x for the E^y₁₁ mode are much smaller than the other electric field components. The simplest method to apply thermal stress is to place a stress plate on the arrayed waveguides. It is shown that the effective indices of the two modes, especially the E^y₁₁ mode, can be tuned by stress plates with different thickness. The order of magnitude of tune range is 10^-4 whereas the material of plate is aluminum. The effective indices can be increased by attaching an aluminum plate with appropriate thickness under arrayed waveguides, and will be decreased whatever the thickness of the plate is set if attached over arrayed waveguides. However, the stress plate has small effect on the optical mode fields.

Citation Download Citation

Huamao Huang, Dexiu Huang, Wen Liu, and Kan Yu "Thermal stress effects on the mode field characteristics of arrayed waveguides", Proc. SPIE 6838, Optoelectronic Devices and Integration II, 68381R (8 January 2008); https://doi.org/10.1117/12.756551

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KEYWORDS

Waveguides

Thermal effects

Aluminum

Refractive index

Channel waveguides

Finite element methods

Cladding

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