What question did this study set out to answer?

To establish a comprehensive theoretical framework combining wave and ray optics that describes prism–film couplers and calculates the conditions for optimal light coupling into thin-film guides.

October 1, 1970Journal of the Optical Society of America

Theory of Prism–Film Coupler and Thin-Film Light Guides

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Authors

PTP. K. TienAT&T (United States)RUR. UlrichUniversité Paris-Sud

Discussion

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Overview

Theoretical analysis demonstrates optimal optical power transfer in thin-film light guides, indicating high-efficiency laser coupling of up to 81% into specific propagation modes.

Key Points

To establish a comprehensive theoretical framework combining wave and ray optics that describes prism–film couplers and calculates the conditions for optimal light coupling into thin-film guides.
Combined ray and wave optics to model electromagnetic propagation modes and their coupling-induced modifications in thin-film light guides.
Calculated field distributions across the prism and film interface to evaluate electromagnetic power transfer.
Derived analytical conditions governing optimum coupling efficiency and determined parameters for measuring film thickness and refractive index.
Demonstrated that optimized coupler design can direct 81% of incident laser beam power into any chosen propagation mode within the film.
Established that observing the spectrum of propagating modes allows direct and accurate extraction of thin-film thickness and refractive index.

Cite This Study

Tien et al. (1970) studied this question.

synapsesocial.com/papers/6a6f4bb578a11c550e08fc26 https://doi.org/10.1364/josa.60.001325

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October 1, 1970Journal of the Optical Society of America

Theory of Prism–Film Coupler and Thin-Film Light Guides

View Full Paper

Ask AI

Bookmark

Authors

PTP. K. TienAT&T (United States)RUR. UlrichUniversité Paris-Sud

Discussion

Member takes

Overview

Theoretical analysis demonstrates optimal optical power transfer in thin-film light guides, indicating high-efficiency laser coupling of up to 81% into specific propagation modes.

Key Points

To establish a comprehensive theoretical framework combining wave and ray optics that describes prism–film couplers and calculates the conditions for optimal light coupling into thin-film guides.
Combined ray and wave optics to model electromagnetic propagation modes and their coupling-induced modifications in thin-film light guides.
Calculated field distributions across the prism and film interface to evaluate electromagnetic power transfer.
Derived analytical conditions governing optimum coupling efficiency and determined parameters for measuring film thickness and refractive index.
Demonstrated that optimized coupler design can direct 81% of incident laser beam power into any chosen propagation mode within the film.
Established that observing the spectrum of propagating modes allows direct and accurate extraction of thin-film thickness and refractive index.

Cite This Study

Tien et al. (1970) studied this question.

synapsesocial.com/papers/6a6f4bb578a11c550e08fc26 https://doi.org/10.1364/josa.60.001325

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