物理学报Issue(6)：1-10,10.DOI:10.7498/aps.64.064204
基于数字全息图的光纤折射率测量研究∗
Refractive index measurement research for optical fib er based on digital hologram
摘要
Abstract
A test system including light path system and software system is built for measuring the refractive index of fiber by using the digital holographic tomography technology. Based on the phase distribution curve of object wave the optimal hologram is recorded. The spectral range corresponding to the object wave is selected accurately based on the optimization of the spectrum. The phase distribution information of object wave is extracted with the angular spectrum reconstraction. The accuracy of extracted phase information has been verified through the simulation holograms of optical fiber. Combined with the multilayers model of fiber, the refractive index distribution along the diameter direction of fiber tomogram is recovered from a single hologram. Single-mode and multi-mode optical fiber are tested as samples. The experiment results are consistent with the results of S14 refractive index profiler, the precision is 10−4. The compare result shows that our method is simple, fast and accurate for the measurement of the refractive index of fibers. We have also studied the measurement of the refractive index distribution of the special optical fiber.关键词
数字全息/相位分布/光纤折射率分布/特种光纤Key words
digital holographic/phase distribution/refractive index distribution of optical fiber/special optical fiber引用本文复制引用
谷婷婷,黄素娟,闫成,缪庄,常征,王廷云..基于数字全息图的光纤折射率测量研究∗[J].物理学报,2015,(6):1-10,10.基金项目
国家自然科学基金(批准号61178088,61475098)、上海市科技创新行动计划(批准号14511100100)和上海市科委科研计划项目(批准号14440500100)资助的课题.* Project supported by the National Natural Science Foundation of China (Grant Nos.61178088,61475098), Shanghai Science and Technology Innovation Action Plan, China (Grant No.14511100100), and the scientific research plan of Science and Technology Commission of Shanghai Municipality , China (Grant No.14440500100) （批准号61178088,61475098）
