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Updated: Jun 14, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Design of two-dimensional tunable photonic crystals with multiple functionalities.

H Wang¹, W Q Yang, C B Ma

¹Department of Electrical Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0511, USA.

Journal of Nanoscience and Nanotechnology

|April 2, 2010

Summary

This study introduces a tunable photonic crystal capable of positive, zero, and negative refraction. Electrically tuning liquid crystals within the structure controls light propagation for sub-wavelength imaging applications.

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Published on: September 26, 2014

Area of Science:

Photonics and Optics
Materials Science

Background:

Negative refraction enables sub-wavelength imaging and novel control over light propagation.
Photonic crystals are key research areas for achieving negative refraction.
Controlling light behavior at the nanoscale is crucial for advanced optical devices.

Purpose of the Study:

To design and simulate a novel two-dimensional tunable photonic crystal.
To demonstrate tunability of refraction (positive, zero, negative) using electrical tuning of infiltrated liquid crystals.
To analyze the photonic crystal's behavior using equifrequency surface diagrams and finite-difference time-domain simulations.

Main Methods:

Plane wave expansion method for photonic crystal design and analysis.
Finite-difference time-domain (FDTD) simulations for validating optical properties.
Electrical tuning of infiltrated liquid crystals to alter photonic crystal properties.

Main Results:

The designed photonic crystal exhibits tunable refractive properties.
Equifrequency surface diagrams illustrate the control over photon refraction direction.
Simulations confirm the tunability across positive, zero, and negative refraction regimes.

Conclusions:

The proposed tunable photonic crystal offers a versatile platform for manipulating light.
Electrical tuning of liquid crystals provides an effective mechanism for controlling refraction.
This research contributes to the development of advanced optical devices and sub-wavelength imaging.