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Tight packaging of erbium-doped waveguide amplifiers
Irene Mozjerin1, Shlomo Ruschin, Amos Hardy
1Department of Electrical Engineering-Physical Electronics, Tel Aviv University, Tel Aviv 69978, Israel. mozjerin@eng.tau.ac.il
Applied Optics
|May 11, 2005
Summary
A new numerical model optimizes compact erbium-doped waveguide amplifiers (EDWAs) by accounting for bend losses. This enables the design of smaller, high-gain EDWAs for integrated optics.
Area of Science:
- Photonics and Optical Engineering
- Integrated Optics
- Waveguide Technology
Background:
- Erbium-doped waveguide amplifiers (EDWAs) are crucial for optical signal amplification.
- Miniaturization of optical components is a key trend in integrated photonics.
- Bend-induced losses can significantly impact EDWA performance in compact designs.
Purpose of the Study:
- To develop a numerical model for EDWAs incorporating bent waveguides.
- To analyze and mitigate bend-induced losses in EDWAs.
- To optimize the design of tightly packed EDWAs for specific gain and area constraints.
Main Methods:
- Development of a numerical model based on rate-propagation equations.
- Inclusion of bend-induced losses considering varying radii of curvature.
- Application of the model to minimize area for a target gain or maximize gain within a given area.
Main Results:
- Demonstrated the feasibility of fabricating high-gain, small-size EDWAs.
- Numerical calculations validated the model's predictions using realistic waveguide parameters.
- Identified simple design rules based on geometric formulas and bend loss considerations.
Conclusions:
- The developed numerical model accurately predicts EDWA performance with bent waveguides.
- Optimized design strategies can lead to significant reductions in EDWA size without compromising gain.
- The findings provide practical guidelines for the design of next-generation compact optical amplifiers.