压力作用对实芯光子晶体光纤特性影响分析

Effect of pressure on the property of the solid-core photonic crystal fibers

为了能使光子晶体光纤用于光纤压力传感器等无源器件中,采用弹光理论分析方法对压力作用下光子晶体光纤纤芯和包层中应力、横向结构和折射率分布的变化进行了理论分析和实验模拟,获得了压力作用下对光子晶体光纤中传播光脉冲的相位和模式双折射的影响的数据,采用相干干涉测量技术方法能测量光子晶体光纤中光脉冲相位和模式双折射的波动量值并进一步推算出作用在光子晶体光纤上的外界压力变化量。结果表明,光子晶体光纤可用作光纤压力传感器中的敏感元件。这一结果对光子晶体光纤在光纤压力传感器中的进一步应用是有帮助的。

In order to adopt photonic crystal fibers broadly in the passive devices such as fiber press sensors, the stress of photonic crystal fiber cores and cladding, the transversal structure and the refractive index were theoretically analyzed and simulated by means of elastic-optical theory, and the effect of pressure on the pulse phase and mode birefringence in photonie crystal fibers were discussed. The pulse phase fluctuation and mode birefringence variation in photonic crystal fibers were measured by means of coherent interference technology, and the pressure in the photonic crystal fibers was calculated. It is indicated that the photonie crystal fibers might be used as sensitive elements in the fiber press sensors. It is help that the photomie crystal fibers is more application in the fiber press sensors by this result.