High-speed FBG interrogator based on fiber interferometry and FPGA real-time processing

Javier Elaskar,Marcelo Luda,Jorge Codnia,Claudio J. Oton

2021 IEEE Photonics Conference (IPC)（2021）

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摘要

We present a high-speed fiber Bragg grating interrogator based on an active Sagnac interferometer and phase-generated-carrier demodulation performed in real time by a low-cost FPGA system. The system has 280kHz detection bandwidth and 1MS/s sampling rate, and implements a multitone-mixing scheme to reduce distortion.

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关键词

Optical fibers,Optical interferometry,Optical distortion,Sagnac interferometers,Fiber gratings,Distortion,Real-time systems

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