【摘要】 文章在光谱吸收基础上提出了一种以多模Bragg空芯光纤作为吸收池的光纤气体传感器。并求解了光纤中的吸收系数。这种光纤气体传感器具有灵敏度高、芯区大,易于泵浦、不易形成浓度梯度、可实现同时测量等特点。更多还原

【Abstract】 Based on the characteristic of spectrum absorption,we propose a type of optical fiber gas sensor for measurment of gas concentration.we calculate the spectral absorption coefficient of hollow Bragg fiber with multi-mode as gas sensor.The advantages of this type of optical fiber gas sensor are with high sensitivity,and big core area,thus,it is easy pumping,and not easily forming concentration gradient.This gas sensor can measure different kinds of gas.更多还原