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Related Experiment Video

Updated: Mar 7, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

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Published on: August 5, 2013

Wide-band/angle Blazed Surfaces using Multiple Coupled Blazing Resonances.

Mohammad Memarian¹, Xiaoqiang Li², Yasuo Morimoto³

¹Dept. Electrical Engineering, Sharif University of Technology, Tehran, Iran.

Scientific Reports

|February 18, 2017

Summary

Researchers developed blazed gratings with multiple coupled resonances for enhanced blazing. This innovation broadens the operational bandwidth and incident angle range for improved performance in optical and radar applications.

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Area of Science:

Optics and Photonics
Electromagnetics
Materials Science

Background:

Blazed gratings offer unique reflection properties compared to conventional mirrors.
Perfect blazing, a Wood's anomaly, has been studied as isolated resonance points.
Controlling blazing bandwidth and incident angle range remains a challenge.

Purpose of the Study:

To introduce reflective blazed surfaces with multiple coupled blazing resonances.
To enable tailored blazing operations for wider bandwidth and angular acceptance.
To demonstrate enhanced blazing performance through designed multi-resonance structures.

Main Methods:

Designing blazed grating unit cells with coupled resonance conditions.
Fabricating blazed gratings exhibiting single and multi-pole blazing passbands.
Experimental characterization and measurement of blazing performance at X-band.

Main Results:

Achieved blazing at multiple wavelengths by combining coupled resonances.
Demonstrated a blazing passband analogous to coupled resonator filters.
Showcased increased bandwidth for blazing and specular reflection rejection.

Conclusions:

The developed blazed surfaces offer unprecedented control over blazing characteristics.
The multi-resonance approach enhances operational flexibility and performance.
Potential applications include lasers, spectroscopy, radar, and antenna reflectors.