Multilayered optical memory with bits stored as refractive index change. I. Electromagnetic theory

Area of Science:

• Electromagnetic theory
• Optical memory systems
• Waveguide devices

Background:

• Conventional multilayered optical memory relies on refractive index changes for data storage.
• Developing effective electromagnetic theories is crucial for optimizing optical memory design.

Purpose of the Study:

• To develop an electromagnetic theory for waveguide multilayered optical memory.
• To derive a theory for conventional multilayered optical memory storing bits as refractive index changes.
• To provide formulas for readout signals and crosstalk analysis.

Main Methods:

• Lippman-Schwinger equation
• Dyadic Green's functions
• Vector coherent transfer function method
• Static case electromagnetic theory development

Main Results:

• A comprehensive electromagnetic theory for static waveguide multilayered optical memory.
• Derivation of a theory for conventional multilayered optical memory with refractive index storage.
• Formulas for calculating readout signals and crosstalk.

Conclusions:

• The developed theories are effective for the optimal design of multilayered optical memory.
• The research addresses numerical calculation challenges in optical memory design.