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Materials 2014, 7(3), 2229-2241; doi:10.3390/ma7032229

Passive Temperature Stabilization of Silicon Photonic Devices Using Liquid Crystals

1
Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA 92037, USA
2
Space and Naval Warfare Systems Center Pacific, San Diego, CA 92152, USA
3
Electrical Engineering Department, Pennsylvania State University, University Park, PA 16802, USA
*
Author to whom correspondence should be addressed.
Received: 7 February 2014 / Revised: 1 March 2014 / Accepted: 6 March 2014 / Published: 14 March 2014
(This article belongs to the Special Issue Liquid Crystals)
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Abstract

In this work we explore the negative thermo-optic properties of liquid crystal claddings for passive temperature stabilization of silicon photonic integrated circuits. Photonic circuits are playing an increasing role in communications and computing, but they suffer from temperature dependent performance variation. Most existing techniques aimed at compensation of thermal effects rely on power hungry Joule heating. We show that integrating a liquid crystal cladding helps to minimize the effects of a temperature dependent drift. The advantage of liquid crystals lies in their high negative thermo-optic coefficients in addition to low absorption at the infrared wavelengths. View Full-Text
Keywords: liquid crystals; thermal stabilization; thermo-optic coefficient; silicon photonics; ring resonator; passive tuning liquid crystals; thermal stabilization; thermo-optic coefficient; silicon photonics; ring resonator; passive tuning
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Ptasinski, J.; Khoo, I.-C.; Fainman, Y. Passive Temperature Stabilization of Silicon Photonic Devices Using Liquid Crystals. Materials 2014, 7, 2229-2241.

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