【摘要】 结合悬臂梁调谐技术与波登管压敏结构,设计实现了光纤光栅压力传感器。提出了一种新型的利用波长解调算法与50 GHz密集波分复用器相结合的技术来确定窄带反射光谱在信道中的准确位置。结果表明,在0~6 MPa的测量范围内,压力测量的相对误差为0.5%,波长分辨力δλ近似为0.1 pm,传感器解调灵敏度达到3×103n W/MPa。更多还原

【Abstract】 By applying Bourdon tube and tunable filter technology, a fiber Bragg grating pressure sensor is designed. The 50 GHz dense wavelength division multiplexing- based and wavelength demodulation algorithm are adopted to locate the exact position of narrowband reflection spectrum in the channel. The results of wavelength demodulation system show that the fiducial error is only 0.5% under the range of 0~6 MPa, and the resolution of the wavelength which comes from the measured experimental can reach 0.1 pm. The demodulation sensitivity of the sensor resolution is 3×103n W/MPa.更多还原