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Writing Bragg Gratings in Multicore Fibers

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Published on: April 20, 2016

Grating induced transparency (GIT) and the dark mode in optical waveguides.

Hsi-Chun Liu¹, Amnon Yariv

¹Department of Electrical Engineering, California Institute of Technology Pasadena, California 91125, USA. hliu@caltech.edu

|July 8, 2009

Summary

This summary is machine-generated.

We introduce novel optical supermodes in modulated waveguides, analogous to quantum EIT states. One supermode, the "dark mode," enables high-bandwidth slow light for advanced optical devices.

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Area of Science:

Photonics and Waveguide Optics
Quantum Optics Analogies

Background:

Few-mode waveguides are crucial for advanced optical functionalities.
Slow light propagation with high bandwidth is a key challenge in photonics.

Purpose of the Study:

To propose and characterize a new class of optical supermodes.
To explore their analogy with quantum EIT (Electromagnetically Induced Transparency) states.
To investigate their potential for slow light applications.

Main Methods:

Theoretical analysis of optical modes in spatially modulated waveguides.
Superposition of three waveguide modes.
Identification and characterization of a specific 'dark mode' supermode.

Main Results:

A new class of optical supermodes supported by dual-grating modulated waveguides.
Demonstration of a formal analogy between these supermodes and EIT quantum states.
Identification of a 'dark mode' exhibiting unique dispersion for slow light.

Conclusions:

The proposed supermodes, particularly the dark mode, offer unique dispersion characteristics.
This dark mode enables slow light propagation with a high bandwidth-delay product.
These findings pave the way for novel optical resonators and lasers.