Finite difference simulation of thermally tuned hexagonal photonic crystals

S. R. Newman; R. C. Gauthier

doi:10.1117/12.873939

28 February 2011 Finite difference simulation of thermally tuned hexagonal photonic crystals

S. R. Newman, R. C. Gauthier

Proceedings Volume 7946, Photonic and Phononic Properties of Engineered Nanostructures; 79460G (2011) https://doi.org/10.1117/12.873939
Event: SPIE OPTO, 2011, San Francisco, California, United States

Abstract

Thermal tuning of hexagonal photonic crystals by absorption of laser energy is examined through finite difference numerical simulation. The photonic crystals are patterned in the device layer of the silicon on insulator (SOI) platform. The thermal equations, which include contributions from laser absorption gain, conduction loss, and radiation loss are combined to obtain a heat balance equation. This governing equation is modeled using a thermodynamic finite difference computation engine. To ensure the stability of the thermal model within the transient regime the velocity of heat propagation is calculated and included as a courant factor controlling the coarseness of the discretization grid and time step interval. The thermal distribution obtained from the numerical simulation, combined with the thermo-optic effect, can be used to alter the initial dielectric distribution of the device layer. The integration of the change in refractive index into the existing dielectric enables the thermal effects to be included into a standard optical finite difference time domain (FDTD) engine. Through the implementation of the optical and thermal simulation tools, the laser thermal tuning of the band gaps and localized states of hexagonal photonic crystals will be explored. The temperature dependence of the central wavelength of the localized states will be calculated.

Citation Download Citation

S. R. Newman and R. C. Gauthier "Finite difference simulation of thermally tuned hexagonal photonic crystals", Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 79460G (28 February 2011); https://doi.org/10.1117/12.873939

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Photonic crystals

Dielectrics

Finite-difference time-domain method

Silicon

Refractive index

Absorption

Thermography

Show All Keywords

Keywords/Phrases

Search In:

Publication Years