Multi-point abnormal-temperature warning sensor system with different thresholds

作者：Sun Q^*; Liu D; Wang J; Liu H; Xia L; Shum P

来源：Applied Physics B: Lasers and Optics , 2009, 96(4): 833-841.

DOI：10.1007/s00340-009-3587-8

We propose and experimentally demonstrate a time-division-multiplexing-based (TDM-based) multi-point abnormal-temperature warning sensor system with different thresholds. A multi-channel fiber Bragg grating (FBG) serving as the wavelength selector is employed in the fiber ring laser to generate a multi-wavelength pulsed light source. The sensor array is composed of multiple uniform sensing FBGs at different positions and with different nominal wavelengths. The warning signal is obtained by only monitoring the time slot between the injected pulse and the reflected pulse. The measurement range and resolution are theoretically discussed and experimentally demonstrated.

• 出版日期2009-9
• 单位华中科技大学