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Updated: Mar 12, 2026

Microwave Photonics Systems Based on Whispering-gallery-mode Resonators

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Published on: August 5, 2013

Electromagnetically induced transparency-like effect in microring-Bragg gratings based coupling resonant system.

Zecen Zhang, Geok Ing Ng, Ting Hu

|November 10, 2016

Summary

A novel all-pass microring-Bragg gratings (APMR-BG) system demonstrates electromagnetically induced transparency (EIT)-like transmission. This compact, fabrication-tolerant device achieves high performance, enabling slow light applications.

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Last Updated: Mar 12, 2026

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Published on: August 5, 2013

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Area of Science:

Photonics and Optical Engineering
Quantum Optics

Background:

Electromagnetically induced transparency (EIT) is a quantum interference effect.
Achieving EIT in compact, practical devices is challenging.

Purpose of the Study:

To propose and demonstrate a novel APMR-BG based coupling resonant system.
To generate EIT-like transmission in a compact and fabrication-tolerant platform.

Main Methods:

Coupling a microring resonator with a Fabry-Pérot resonator formed by Bragg gratings.
Utilizing a transfer matrix method for analytical investigation.
Fabrication on a silicon-on-insulator (SOI) platform.

Main Results:

Achieved EIT-like transmission with an extinction ratio of 12 dB.
Obtained a full-width-at-half-maximum (FWHM) of 0.077 nm and a Q factor of 20200.
Demonstrated slow light with a group delay of 38 ps.

Conclusions:

The APMR-BG system offers a compact and fabrication-tolerant approach to EIT-like transmission.
The demonstrated device shows promising performance for optical signal processing and slow light applications.