Analytical Solutions to Estimate the Temperature Sensitivity of Arrayed Waveguide Gratings With Stress Plates

Controlling thermal stress is a promising way to reduce the temperature instability of arrayed waveguide gratings (AWGs). A simple method to apply thermal stress is to attach stress plates on the arrayed waveguides. In this paper, a general analytical method to study the temperature sensitivity of t...

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Bibliographic Details
Published in:IEEE journal of quantum electronics 2008-12, Vol.44 (12), p.1263-1270
Main Authors: Huang, Huamao, Liu, Wen, Huang, Dexiu
Format: Article
Language:English
Subjects:
Arrayed waveguide gratings
Optical arrays
Optical refraction
Optical waveguides
stress
temperature
Temperature control
Temperature sensors
Thermal stresses
Thermooptic effects
Waveguide transitions
Wavelength division multiplexing
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Summary:Controlling thermal stress is a promising way to reduce the temperature instability of arrayed waveguide gratings (AWGs). A simple method to apply thermal stress is to attach stress plates on the arrayed waveguides. In this paper, a general analytical method to study the temperature sensitivity of the central wavelength in modified AWGs with stress plates is developed. The complete analysis shows that the temperature sensitivity can be controlled effectively by tuning the material parameters and the thickness of the stress plates. To obtain athermal AWGs, a stress plate with large positive thermal expansion coefficient and small Young's modulus should be attached on the bottom of the arrayed waveguides. The material with large negative thermal expansion coefficient suggests another potential scheme.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2008.2005357