Eltahir, E.I. and Islam, Md. Rafiqul and Saad, Elessaid and Babiker, A. Awad and Hassan Abdalla Hashim, Aisha and Habaebi, Mohamed Hadi and Elsheikh, Elfatih A A (2026) Performance analysis of PIN and APD photodetectors in an optical communication system under adverse conditions. In: 2025 10th International Conference on Computer and Communication Engineering (ICCCE), 26-27 August 2025, KOE, IIUM.
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Abstract
This paper investigates the impact of optical attenuation on the performance of PIN and avalanche photodiodes (APDs) in high-speed optical communication systems. Through a simulation-based analysis using OptiSystem software, the study examines key performance metrics—Bit Error Rate (BER), Q-factor, and received optical power—across varying attenuation levels. The results reveal that although both detectors suffer performance degradation with increased attenuation, APDs consistently outperform PIN photodiodes due to their internal gain mechanism, which significantly enhances sensitivity and noise resilience in low-power or high-loss conditions. At high attenuation (39 dB), the APD achieves approximately 17.1% higher Q-factor and 67.7% lower BER compared to the PIN, highlighting its superior capability to maintain signal integrity. Eye diagram analysis further supports the APD’s advantage in preserving signal quality under adverse conditions. These findings provide practical guidance for optical system designers in selecting photodetectors based on system requirements, enabling the development of more robust and efficient optical communication links across diverse transmission scenarios.
| Item Type: | Proceeding Paper (Plenary Papers) |
|---|---|
| Uncontrolled Keywords: | Optical attenuation, APD, PIN photodiode, BER, Q-factor, receiver sensitivity, OptiSystem simulation. |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101 Telecommunication. Including telegraphy, radio, radar, television |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering > Department of Electrical and Computer Engineering Kulliyyah of Engineering |
| Depositing User: | Dr. Mohamed Hadi Habaebi |
| Date Deposited: | 29 Apr 2026 17:26 |
| Last Modified: | 29 Apr 2026 17:26 |
| Queue Number: | 2026-04-Q2960 |
| URI: | http://irep.iium.edu.my/id/eprint/128497 |
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