| 基于单侧几何形变结构的全光纤Michelson干涉高温传感器 |
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| 引用本文： | 韩猛,朱涛,邓明,黄维,饶云江. 基于单侧几何形变结构的全光纤Michelson干涉高温传感器[J]. 光电子．激光, 2012, 0(3): 455-459 |
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| 作者姓名： | 韩猛 朱涛 邓明 黄维 饶云江 |
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| 作者单位： | 重庆大学光电工程学院光电技术及系统教育部重点实验室;重庆大学光电工程学院光电技术及系统教育部重点实验室;重庆大学光电工程学院光电技术及系统教育部重点实验室;重庆大学光电工程学院光电技术及系统教育部重点实验室;电子科技大学光纤传感与通信教育部重点实验室 |
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| 基金项目： | 国家自然科学基金(60807019);教育部新世纪优秀人才支持计划基金(NCET-08-0602)资助项目 |
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| 摘 要： | 利用CO2激光脉冲对标准单模光纤(SMF)单向形成较小的几何形变,把部分基模能量耦合到光纤包层,制作了一种新型的在线型Michelson干涉传感器。理论分析了这种几何微扰激发的包层模特性,并利用芯模-包层模较大的热光系数差,把这种传感器应用于高温测量。实验结果表明,这种干涉传感器的温度灵敏度为0.093 7nm/℃,并且在800℃温度范围内具有良好的线性和重复性。这种制作简单、结构稳定、体积小和灵敏度高的全光纤在线型Michelson温度传感器将具有较大的潜在应用价值。
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| 关 键 词： | 光纤传感器 Michelson干涉仪 高温传感器 模式干涉 |
All-fiber Michelson interferometric high-temperature sensor based on edge-deformation |
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| HAN Meng,ZHU Tao,DENG Ming,HUANG Wei and RAO Yun-jiang. All-fiber Michelson interferometric high-temperature sensor based on edge-deformation[J]. Journal of Optoelectronics·laser, 2012, 0(3): 455-459 |
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| Authors: | HAN Meng ZHU Tao DENG Ming HUANG Wei RAO Yun-jiang |
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| Affiliation: | Key Laboratory of Optoelectronic Technology and Systems of Education Ministry of China,Chongqing University,Chongqing 400044,China;Key Laboratory of Optoelectronic Technology and Systems of Education Ministry of China,Chongqing University,Chongqing 400044,China;Key Laboratory of Optoelectronic Technology and Systems of Education Ministry of China,Chongqing University,Chongqing 400044,China;Key Laboratory of Optoelectronic Technology and Systems of Education Ministry of China,Chongqing University,Chongqing 400044,China;Key Laboratory of Optical Fiber Sensing and Communication of Education Ministry of China,University of Electronics Science & Technology of China,Chengdu 610054,China |
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| Abstract: | A novel all-fiber inline Michelson interferometer by using CO2 laser pulses to introduce edge-deformation in single mode fiber is demonstrated.The simple fabrication technique can couple a part of light from the core mode into the fiber cladding,and the coupling mechanism is analyzed theoretically.Based on the larger thermal optical coefficient difference between the core mode and the cladding modes,the interferometer can be used for high temperature measurement.The experimental results show that the temperature sensitivity of the sensor could be-0.093 7 nm/℃,and it exhibits good linearity and repetition within 800 ℃.Such an all-fiber inline Michelson interferometer with simple fabrication,good stability,small size and high sensitivity may find potential applications in national defense and civilian industry. |
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| Keywords: | optical fiber sensor Michelson interferometer high-temperature sensor mode interferometric |
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