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Updated: May 22, 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

Controlled bistability by using array defect layers in one-dimensional nonlinear photonic crystals.

Mohammad Aghaie¹, Davud Hebri, Amir Ghaedzadeh

¹Department of Physics, Azarbaijan University of Tarbiat Moallem, Tabriz, Iran. m.aghaie_phy@yahoo.com

|May 23, 2012

Summary

This study introduces a novel method for optical bistability using one-dimensional nonlinear photonic crystals with defect layers. These structures act as all-optical switches, controlling light transmission states.

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Area of Science:

Optics and Photonics
Materials Science
Nonlinear Optics

Background:

One-dimensional (1D) nonlinear photonic crystals are crucial for advanced optical devices.
Controlling light transmission and achieving optical bistability are key challenges in photonics.

Purpose of the Study:

To investigate input-output transmission regimes in 1D nonlinear photonic crystals with array defect layers.
To propose a new method for creating and controlling optical bistability.
To explore the potential of these structures as all-optical switches.

Main Methods:

Analytical modeling and detailed numerical simulations.
Derivation of a coupled-mode system from Maxwell equations.
Analysis of the stationary-transmission regime in the proposed structure.

Main Results:

Demonstrated control over optical bistability by introducing defect layers.
Identified specific transmission regimes based on structural modifications.
Observed switching between lower- and higher-transmissive states.

Conclusions:

Periodic optical structures with array defect layers offer a viable method for optical bistability.
These structures can function as efficient all-optical switches.
The proposed design enables switching from a low-transmissive state to a transparent state.