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Retrieving quasi-phase-matching structure with discrete layer-peeling method.

Q W Zhang¹, X L Zeng, M Wang

¹The Key Lab of Specialty Fiber Optics and Optical Access Network, Shanghai University, Shanghai 200072, China.

|July 10, 2012

Summary

This summary is machine-generated.

A new discrete layer-peeling algorithm accurately reconstructs quasi-phase-matching (QPM) gratings. This method efficiently verifies QPM structures using experimental filter spectra, proving its value in quality inspection.

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Area of Science:

Optics and Photonics
Materials Science

Background:

Quasi-phase-matching (QPM) gratings are crucial for nonlinear optical devices.
Accurate characterization of QPM structures is essential for device performance and quality control.

Purpose of the Study:

To present a novel discrete layer-peeling algorithm for reconstructing QPM gratings.
To validate the algorithm's accuracy and efficiency using experimental data.

Main Methods:

A discrete layer-peeling algorithm is employed for QPM grating reconstruction.
Experimentally measured output spectra from Šolc-type filters with uniform and chirped QPM structures are utilized as input data.

Main Results:

The reconstructed QPM structures closely match the original experimental structures.
The discrete layer-peeling algorithm demonstrates high accuracy and efficiency.

Conclusions:

The developed discrete layer-peeling algorithm is a reliable method for QPM grating reconstruction.
This approach offers an efficient tool for quality inspection of QPM gratings.