研究目的
To evaluate the performance of various types of chirped FBG’s (CFBG) with avalanche photodiode (APD) on a designed optical fiber communication (OFC) link, focusing on compensating chromatic dispersion and improving system performance metrics such as Q-factor, bit error rate, and eye diagram.
研究成果
The linear CFBG with Gaussian apodization function shows superior performance in compensating chromatic dispersion, with the highest Q-factor and lowest bit error rate at the maximum transmission distance and grating length. The combination of linear CFBG and Gaussian apodization function optimizes system performance.
研究不足
The study is limited to specific types of CFBG’s and apodization functions. The performance is evaluated under controlled conditions with fixed data rate and modulation format.
1：Experimental Design and Method Selection:
The study uses various types of CFBG’s (linear, quadratic, square root, and cubic root) with Gaussian apodization function and APD on an OFC link. The performance is evaluated based on Q-factor, bit error rate, and eye diagram.
2：Sample Selection and Data Sources:
The experiment is conducted with varying fiber lengths (100, 200, 300, 400, and 500 km), grating lengths (10, 20, 30, 40, and 50 mm), and operating temperatures (5°C, 10°C, 15°C, 20°C, 25°C, 30°C).
3：List of Experimental Equipment and Materials:
The setup includes a return-to-zero (RZ) generator, VCSEL, opti-grating, APD, and optical fiber.
4：Experimental Procedures and Operational Workflow:
The signal is generated, modulated, transmitted over optical fiber, amplified, filtered through FBG, and received by APD. The performance is analyzed based on the received signal.
5：Data Analysis Methods:
The performance is evaluated using Q-factor, bit error rate, and eye diagram analysis.
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