【摘要】 选用热膨胀系数较大的聚合物材料,采用特殊工艺用其对裸光纤光栅进行封装,极大地提高了光纤光栅的温度灵敏度。在20～90℃范围内,聚合物封装光纤光栅的平均灵敏度系数η′=112.447×10-6℃,比裸光纤光栅增加了15.804倍;温度灵敏度为0.176nm/℃,比裸光纤光栅增加了16倍;反射波长漂移量增加了15.95倍。裸光纤光栅和聚合物封装光纤光栅的温度响应曲线均具有很好的线性。更多还原

【Abstract】 The temperature sensitivity of fiber Bragg gratings has been improved largely by a kind of polymerpackage with biggish thermal expansion coefficient using a special technology.Within 20～90℃,it was obtained that the average temperature sensitivity coefficient of polymerpackaged fiber Bragg gratings was η′=112447×10-6/℃,which enhanced 15.804 times as much as the value of bare fiber Bragg grating.The temperature sensitivity was 0176 nm/℃,which enhanced 16 times.And the reflected wavelength shift enhanced 1594 times.Both temperature response curves of bare and polymerpackaged fiber.Bragg gratings have better linearity.更多还原