| Title |
A Quasi-Distributed Fiber-Optic Sensor System using an InGaAs PD Array and FBG Sensors for the Safety Monitoring of Electric Power Systems |
| Authors |
Hyun-Jin Kim ; Hyung-Joon Park; Min-Ho Song |
| Keywords |
Fiber Bragg Grating ; InGaAs Photo-Diode Array ; Diffraction Grating |
| Abstract |
We constructed a quasi-distributed fiber-optic sensor network for the safety monitoring in power systems. It is possible to construct many of FBG sensors in a line and to be immune from electromagnetic noise. For demodulation analysis of reflected wavelength from FBG sensor, we proposed a simple and fast system using a InGaAs photo-diode array and a holographic diffraction grating. For accuracy improvement of the proposed demodulation system, we applied a Gaussian line-fitting algorithm. We obtained about 4[pm] of wavelength resolution and stability. |