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Characterization of Anisotropic Leaky Mode Modulators for Holovideo

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Published on: March 19, 2016

Index matching in multilayered organic waveguides.

J Thompson¹, F Albalawi¹, N Wickremasinghe¹

¹Department of Physics, University of Cincinnati, Cincinnati, OH 45221, United States of America.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|September 8, 2020

Summary

Index matching in organic waveguides enables new devices for optical mode control. This study demonstrates index matching in PTCDA-Alq3 multilayer structures using experimental and theoretical methods.

Keywords:

effective medium index matching multilayers organic waveguides

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Area of Science:

Materials Science
Optics and Photonics
Organic Electronics

Background:

Birefringent multilayered organic waveguides are crucial for advanced optical devices.
Controlling guided modes within these waveguides is essential for functionalities like mode coupling and switching.
Organic molecular beam deposition (OMBD) is a key technique for fabricating such optical structures.

Purpose of the Study:

To demonstrate index matching of guided modes in two distinct multilayered organic waveguide structures.
To explore the potential of these structures for developing novel mode coupling and switching devices.
To validate experimental findings with theoretical modeling.

Main Methods:

Fabrication of PTCDA-Alq3-PTCDA and PTCDA-Alq3 effective medium multilayer waveguides on Pyrex substrates using OMBD.
Experimental measurement of effective refractive index dispersion for transverse electric (TE) and transverse magnetic (TM) modes via the m-line technique.
Theoretical modeling of index dispersion using a transfer matrix algorithm.

Main Results:

Successful demonstration of index matching for guided modes in both three-layer and effective medium multilayer waveguides.
Experimental verification of effective refractive index dispersion.
Theoretical model accurately predicted the observed index dispersion.

Conclusions:

Index matching in birefringent multilayered organic waveguides is achievable and offers significant potential for optical device applications.
The combination of experimental (m-line) and theoretical (transfer matrix) approaches provides a robust method for investigating guided modes.
These findings pave the way for the rational design of advanced organic optical components.