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Critical Design and Operating Parameters of Active Waveguide Bragg Gratings for Laser Performance.

Ángel Sanz-Felipe¹, Juan A Vallés²

¹Applied Physics Department, Escuela Politécnica Superior, University of Zaragoza, Ctra. de Cuarte s/n, 22071 Huesca, Spain.

|January 8, 2025

Summary

Active waveguide Bragg gratings (AWBGs) offer laser potential by combining reflection and amplification. This study models AWBG optical power propagation to identify critical design parameters for optimal laser performance.

Keywords:

active waveguide critical parameters erbium and ytterbium-codoped waveguides integrated Bragg grating integrated optics monolithic laser

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Area of Science:

Photonics and Laser Technology
Integrated Optics
Materials Science

Background:

Active waveguide Bragg gratings (AWBGs) integrate Bragg grating reflectivity with rare-earth-doped waveguide amplification.
This synergy holds potential for developing compact, monolithic laser devices.
Precise control over grating design and operating parameters is crucial for achieving desired laser performance.

Purpose of the Study:

To numerically model optical power propagation in an Er/Yb-codoped integrated AWBG.
To establish a comprehensive database of AWBG response across key operational parameters.
To determine critical design and operating values essential for realizing AWBG laser functionality.

Main Methods:

Utilized a numerical method to simulate optical power propagation.
Calculated the AWBG response as a function of critical operational parameters.
Developed a detailed database of the grating's photonic response.

Main Results:

Generated a complete database detailing the AWBG response.
Identified specific values for design and operational parameters that enable laser performance.
Quantified the influence of various parameters on the grating's optical behavior.

Conclusions:

The study provides essential data for the experimental design and optimization of AWBG lasers.
Numerical modeling is a vital tool for understanding and predicting the laser performance of these photonic structures.
The determined critical parameter values facilitate the fabrication of efficient Er/Yb-codoped AWBG devices.