CAJ | 학술논문

空芯光子晶体光纤是一种新型的陀螺用光纤，较传统光纤具有良好的抗磁性，光纤的磁敏感性是由光纤的Verdet常数来表征的。为研究空芯光子晶体光纤的磁敏感性，利用Comsol软件对HC-1550-2空芯光子晶体光纤的Verdet常数进行仿真计算，选用含有法拉第旋转反射镜(FRM)的反射式双光路测量方案对空芯光子晶体光纤的Verdet常数进行实验测量。双光路测量系统中的FRM可以消除被测光纤中线性双折射对测量的影响。仿真与测量结果相吻合，且由结果可知空芯光子晶体光纤的Verdet常数约为传统光纤的1/100倍，验证了空芯光子晶体光纤在陀螺降低磁敏感性方面的优势。
공심광자정체광섬시일충신형적타라용광섬，교전통광섬구유량호적항자성，광섬적자민감성시유광섬적Verdet상수래표정적。위연구공심광자정체광섬적자민감성，이용Comsol연건대HC-1550-2공심광자정체광섬적Verdet상수진행방진계산，선용함유법랍제선전반사경(FRM)적반사식쌍광로측량방안대공심광자정체광섬적Verdet상수진행실험측량。쌍광로측량계통중적FRM가이소제피측광섬중선성쌍절사대측량적영향。방진여측량결과상문합，차유결과가지공심광자정체광섬적Verdet상수약위전통광섬적1/100배，험증료공심광자정체광섬재타라강저자민감성방면적우세。
Air-core photonic crystal fiber is a new optical fiber used in fiber-optic gyroscope, which has better diamagnetic than traditional optical fiber. Magnetic-field sensitivity of the fiber is characterized by the Verdet constant of the fiber. In order to study the magnetic-field sensitivity of air-core photonic crystal fiber, Comsol software was used to simulate the Verdet constant of HC- 1550- 2 air- core photonic crystal fiber in this paper. At the same time, a dual-optical system including a Faraday Rotation Mirror (FRM) was chosen to measure the air- core photonic crystal fiber’ s Verdet constant. In the system, the FRM can eliminate the influence of the linear birefringence in the tested fiber on measurement. The measured results are in agreement with the simulation results. It can be seen from the results, Verdet constant of air- core photonic crystal fiber is nearly 1/100 of the traditional optical fiber, which verifies that air- core photonic crystal fiber has the advantages on decreasing the magnetic-field sensitivity.