Ferry Wahyu Wibowo, Mujiyono, Moh Khairudin
Fiber optic technology is the cornerstone of modern communication networks, carrying the vast majority of digital traffic that underpins daily social and business activities. Ensuring the reliability of this critical infrastructure requires continuous, real-time health monitoring. Fiber links are susceptible to issues such as signal degradation, sudden loss, and increased bit-error rates, which can cause major disruptions if not detected promptly. Traditional monitoring methods, which rely on periodic measurements and manual inspections, are inadequate for identifying rapidly changing faults. To address this, the study presents a Field-Programmable Gate Array (FPGA)-based health-monitoring system implemented on the Artix-7 platform. This system is designed to detect various link faults in real-time and report status updates. Its key functions include monitoring optical power, detecting Small Form-factor Pluggable (SFP) hardware issues, measuring Bit Error Rate (BER) using a Pseudo-Random Binary Sequence (PRBS) length 31 (PRBS31), and sending updates via a Universal Asynchronous Receiver-Transmitter (UART) interface. The design employs a modular Very High-Speed Integrated Circuit Hardware Description Language (VHDL) architecture, featuring controllers for Serial Peripheral Interface (SPI) and InterIntegrated Circuit (I2C), and a PRBS31 generator/checker, all managed by a finite-state machine that activates testing only when necessary to save power. Implementation results show minimal hardware usage (1.55% lookup tables (LUTs)) and low total power consumption of just 0.078 W. Experimental validation successfully classified link health into NORMAL, WARNING, and FAULT states. © 2026 IEEE.
Universitas Amikom Yogyakarta, Department of Informatics, Yogyakarta, Indonesia; Universitas Negeri Yogyakarta, Department of Manufacturing Engineering, Yogyakarta, Indonesia; Universitas Negeri Yogyakarta, Department of Electrical Engineering, Yogyakarta, Indonesia
