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Writing Bragg Gratings in Multicore Fibers

Writing Bragg Gratings in Multicore Fibers

Published on: April 20, 2016

Augmenting Bragg Reflection with Polymer-sustained Conical Helix.

Vinay Joshi¹, Daniel A Paterson², John M D Storey²

¹Chemical Physics Interdisciplinary Program and Advanced Materials & Liquid Crystal Institute, Kent State University, Kent, 44242, USA. vjoshi2@kent.edu.

Scientific Reports

|April 4, 2019

Summary

This summary is machine-generated.

Researchers developed a polymer-sustained conical helix (PSCH) structure for cholesteric liquid crystals (CLCs). This innovation enables tunable color reflection and optical states for advanced smart devices.

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Area of Science:

Materials Science
Optics
Soft Matter Physics

Background:

Cholesteric liquid crystals (CLCs) exhibit unique light-manipulating properties due to their helical structure.
Stimuli-responsive materials are gaining interest for optical modulation applications.
Existing CLC research has led to novel optical behaviors and theoretical advancements in light-matter interactions.

Purpose of the Study:

To explore spectral tuning limits using a novel polymer-sustained conical helix (PSCH) structure.
To investigate the reversibility of reflective wavelength modulation in CLCs.
To validate the mechanism of enhanced light-cholesteric interactions via theoretical analysis.

Main Methods:

Experimental exploration of reflective wavelength modulation in CLCs.
Creation of a polymer-sustained helicoidal structure via polymerization of a reactive mesogen in CLC under an electric field.
Theoretical analysis to validate the enhanced optical properties.

Main Results:

A polymer-sustained conical helix (PSCH) structure was successfully formed.
The PSCH structure enables three switched optical states: light-scattering, transparent, and color reflection.
The electro-activated PSCH optical film demonstrates a wide color space, suitable for tunable color devices.

Conclusions:

The PSCH structure offers enhanced control over light-cholesteric interactions.
This material is promising for tunable color devices, smart windows, and electronic papers.
The PSCH material opens new possibilities for controlling electromagnetic waves in various applications.