| 金属基底增敏的干涉型高温光纤传感器 |
| 投稿时间：2023-09-19 修订日期：2023-10-11 点此下载全文 |
| 引用本文：刘洺,马成举,李东明,张贻歆,刘芊震,邬佶芮,胡辉,李霆宇.金属基底增敏的干涉型高温光纤传感器[J].红外,2024,45(1):27~35 |
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| 基金项目:陕西省重点研发计划项目(2018GY-062)；西安石油大学创新与实践能力培养项目(YCS21211084) |
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| 中文摘要:为了实现对井下潜油电泵机组温度的实时监测，设计了一种由粗锥型单模-多模-单模(Coarse Cone Singlemode-Multimode-Singlemode, CCSMS)构成的马赫 曾德尔干涉(Mach-Zehnder Interferometer, MZI)型高温光纤传感器。该结构采用直接熔接的方法将单模光纤与多模光纤相熔接；接着通过调整熔接机的熔接参数，在单模光纤上制作出粗锥结构；最后将制备的结构嵌入铜基板的U型槽中，实现传感器的增敏封装。对封装后的传感器的温度响应特性进行了测试。实验结果表明，在40～250℃的温度范围内，该传感器实现了灵敏度为124.9 pm/℃的温度传感。对其稳定性和重复性进行了测试。结果表明，传感器的稳定性最大误差约为0.44%，重复性最大误差约为2.29 pm/℃。该传感器具有灵敏度高、重复性和稳定性好的特点，有望用于油气井下潜油电泵机组的温度监测。 |
| 中文关键词:光纤传感器 马赫-曾德尔干涉仪 单模光纤 温度 |
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| Interferometric High-Temperature Optical Fiber Sensor Sensitized by Metal Substrate |
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| Abstract:In order to achieve real-time monitoring of the temperature of the downhole submersible electric pump unit, a Mach-Zehnder interferometer (MZI) high-temperature fiber optic sensor composed of coarse cone singlemode-multimode-singlemode (CCSMS) was designed. The structure adopts a direct fusion method to fuse the single-mode fibers with the multi-mode fibers. Then, by adjusting the fusion parameters of the fusion splicer, a thick cone structure is fabricated on the single-mode fibers. Finally, the prepared structure is embedded in the U-shaped groove of the copper substrate to achieve the sensitization packaging of the sensor. The temperature response characteristics of the packaged sensor were tested. The experimental results show that the sensor achieves a temperature sensing sensitivity of 124.9 pm/℃ in the temperature range of 40℃ to 250℃. The stability and repeatability of the sensor were tested. The results show that the maximum stability error of the sensor is about 0.44%, and the maximum repeatability error is about 2.29 pm/℃. The sensor has the characteristics of high sensitivity, good repeatability and stability, and is expected to be used for the temperature of the electric submersible pump unit in oil and gas wells. |
| keywords:optical fiber sensor Mach-Zehnder interferometer single mode fiber temperature |
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