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Related Experiment Video

Updated: May 8, 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

High-efficiency beam bending using graded photonic crystals.

B B Oner¹, M Turduev, H Kurt

¹Nanophotonics Research Laboratory, Department of Electrical and Electronics Engineering, TOBB University of Economics and Technology, Ankara, Turkey. bilgehan.oner@gmail.com

|August 14, 2013

Summary

This study demonstrates efficient light bending using graded index (GRIN) photonic crystal (PC) waveguides with a hyperbolic secant profile. These GRIN PC structures offer high transmission efficiency and broad bandwidth for waveguide bends.

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Last Updated: May 8, 2026

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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

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Published on: September 26, 2014

Area of Science:

Photonics
Waveguide Optics
Materials Science

Background:

Graded index (GRIN) materials offer unique light-guiding properties.
Photonic crystals (PCs) enable control over light propagation.
Efficient light bending is crucial for integrated photonic devices.

Purpose of the Study:

To investigate the beam-bending properties of GRIN waveguides with a hyperbolic secant profile.
To analyze the transmission efficiency and bandwidth of GRIN PC media for waveguide bends.
To evaluate the light guiding performance for 90° and 180° bends.

Main Methods:

Utilized the finite-difference time-domain (FDTD) method for numerical simulations.
Designed GRIN photonic crystal (PC) waveguides composed of dielectric rods.
Analyzed light propagation characteristics within the designed structures.

Main Results:

Achieved high-efficiency light bending within GRIN PC waveguides.
Demonstrated a broad bandwidth for light transmission in the bent waveguides.
Confirmed effective light guiding for both 90° and 180° waveguide bends.

Conclusions:

GRIN PC structures with a hyperbolic secant profile are effective for efficient light bending.
The proposed photonic configuration facilitates high-efficiency, broad-bandwidth light bending.
These findings promote the application of GRIN PC structures in optical devices requiring efficient light manipulation.