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Classification scheme and nomenclature for refractive-index distributions.

¹CSIRO Division of Computing Research, P.O. Box 1800, Canberra City, ACT 2601, Australia.

|February 1, 1983

Summary

A new classification system for inhomogeneous refractive index distributions is introduced. This intuitive scheme uses surface shape, index dependency, and function type for unambiguous categorization.

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Area of Science:

Optics
Materials Science
Physics

Background:

Inhomogeneous refractive-index distributions are common in optical systems.
Existing classification methods lack consistency and clarity.
Precise description is crucial for optical design and analysis.

Purpose of the Study:

To propose a novel, intuitive classification scheme for inhomogeneous refractive-index distributions.
To establish a consistent and unambiguous nomenclature for these optical phenomena.
To facilitate better understanding and communication in the field.

Main Methods:

Classification based on three key criteria:
1. Generic shape of isoindicial surfaces.
2. Detailed dependence of refractive index on position coordinates.
3. Whether the distribution is defined by N or N².

Main Results:

A systematic classification scheme is presented.
The nomenclature is designed for clarity and intuitive understanding.
The scheme is demonstrated with examples of technological and physiological relevance.

Conclusions:

The proposed classification and nomenclature provide a robust framework for describing inhomogeneous refractive-index distributions.
This system enhances consistency and reduces ambiguity in scientific communication.
It aids in the study and application of materials with complex optical properties.