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Related Experiment Video

Updated: Jul 14, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Published on: November 30, 2012

Phase shift upon resonant coupling into a thin corrugated optical waveguide.

Raymond Stockermans¹, Mario Ivanov, Paul Rochon

¹Department of Physics, Royal Military College of Canada, Kingston, Ontario, K7K 7B4 Canada.

|July 3, 2007

Summary

Surface gratings couple light into waveguides, causing beam attenuation when resonant modes are excited. This excitation also induces a measurable phase shift, verifiable with Kramers-Kronig relations.

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Area of Science:

Optics and Photonics
Materials Science

Background:

Waveguides are crucial for light manipulation.
Surface gratings enable controlled light coupling into waveguides.

Purpose of the Study:

To investigate light coupling into waveguides using surface gratings.
To analyze the resulting beam attenuation and phase shift.
To validate experimental findings with theoretical predictions.

Main Methods:

Utilizing surface gratings for light coupling.
Exciting resonant waveguide modes.
Measuring transmitted beam attenuation.
Measuring phase shift of the transmitted beam.

Main Results:

Observed significant attenuation of the transmitted beam upon resonant mode excitation.
Demonstrated tunability of resonant modes via incident angle and wavelength.
Measured a significant phase shift in the transmitted beam.
Confirmed experimental phase shifts align with Kramers-Kronig relations.

Conclusions:

Surface grating coupling effectively excites waveguide modes, leading to predictable optical phenomena.
The observed attenuation and phase shift are tunable and consistent with theoretical models.
This study validates the application of Kramers-Kronig relations in waveguide optics.