研究目的
To investigate the gain, optical power, and amplified spontaneous emission (ASE) noise characteristics of different types of semiconductor optical amplifiers (SOAs) operating in the C-band, and evaluate their performance for multiwavelength fiber laser applications.
研究成果
The linear SOA exhibits the most ideal and stable characteristics, including optimal total gain, best parabola-shaped ASE output power, and stable quasi-linear gain region over bias current, making it more suitable for multiwavelength fiber laser applications compared to nonlinear and in-line SOAs, which show higher fluctuations and less stability.
研究不足
The study relies on simulation models (OptiSystem and MATLAB) which may not account for practical losses and real-world variations; the nonlinear and in-line SOAs show unstable and fluctuating characteristics, limiting their practical applicability; the models are based on specific SOA types and may not generalize to all SOAs.
1：Experimental Design and Method Selection:
The study uses simulation-based methods with OptiSystem software for configuring and modeling SOAs, and MATLAB for numerical steady-state modeling based on differential equations to analyze carrier density and photon rates.
2：Sample Selection and Data Sources:
Three types of SOAs are simulated: linear SOA1013S, nonlinear SOA1117S (both from Thorlabs), and in-line IPSAD1503 (from Inphenix), with parameters set according to their specification sheets.
3：List of Experimental Equipment and Materials:
Software tools include OptiSystem and MATLAB; virtual instruments include dual port WDM analyzer, optical power meter, and optical spectrum analyzer (OSA).
4：Experimental Procedures and Operational Workflow:
A configuration is built in OptiSystem with a continuous wave laser connected to the SOA input, an optical null for the second input, and measurements taken using visualizers; MATLAB is used to solve numerical models for gain and noise characteristics.
5：Data Analysis Methods:
Data is analyzed through graphical plots and comparisons of gain, output power, ASE noise, and noise figure against input power, bias current, and wavelength.
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SOA1013S
SOA1013S
Thorlabs
Used as a linear semiconductor optical amplifier in simulations to model gain, optical power, and ASE noise characteristics.
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SOA1117S
SOA1117S
Thorlabs
Used as a nonlinear semiconductor optical amplifier in simulations to model gain, optical power, and ASE noise characteristics.
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IPSAD1503
IPSAD1503
Inphenix
Used as an in-line semiconductor optical amplifier in simulations to model gain, optical power, and ASE noise characteristics.
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OptiSystem
Software used for configuring and simulating the SOA characteristics, including setup with continuous wave laser and visualizers.
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MATLAB
MathWorks
Software used for numerical steady-state modeling to solve differential equations for carrier density and photon rates in SOAs.
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Dual Port WDM Analyzer
Virtual instrument in OptiSystem used to measure gain values and other optical parameters.
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Optical Power Meter
Virtual instrument in OptiSystem used to measure optical power.
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Optical Spectrum Analyzer
OSA
Virtual instrument in OptiSystem used to measure noise bins spectrum and other spectral characteristics.
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