Ruoqi Wang;Wenrui Wang;Jun Hu;Biying Zhou;Xueqian Bai;Lingyun Ye;Kaichen Song
{"title":"通过粗采样和游标效应实现基于光电振荡器的高灵敏度 FBG 传感器","authors":"Ruoqi Wang;Wenrui Wang;Jun Hu;Biying Zhou;Xueqian Bai;Lingyun Ye;Kaichen Song","doi":"10.1109/LPT.2024.3457492","DOIUrl":null,"url":null,"abstract":"A highly sensitive method utilizing coarse frequency sampling and Vernier effect for optoelectronic oscillator (OEO) based fiber Bragg grating (FBG) sensing system is proposed and experimentally demonstrated. To generate the Vernier effect, the frequency sampling interval is set close to the free spectral range of the OEO. Cubic spline fitting and power normalization were applied to obtain smooth sampling curve. The peak frequency of the fitted curve was chosen to measure the spectral shift. In the temperature test experiment, a controllable sensitivity was achieved by changing the sampling interval. The sensitivity of 222.84kHz\n<inline-formula> <tex-math>$/^{\\circ }$ </tex-math></inline-formula>\nC was obtained, which was 127.26 times higher than that of traditional single-loop OEO. Our method requires no modifications to the sensing circuit. Furthermore, it can be used in other OEO-based sensors, indicating promising application prospects.","PeriodicalId":13065,"journal":{"name":"IEEE Photonics Technology Letters","volume":"36 21","pages":"1265-1268"},"PeriodicalIF":2.3000,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly Sensitive Optoelectronic Oscillator-Based FBG Sensor via Coarse Sampling and Vernier Effect\",\"authors\":\"Ruoqi Wang;Wenrui Wang;Jun Hu;Biying Zhou;Xueqian Bai;Lingyun Ye;Kaichen Song\",\"doi\":\"10.1109/LPT.2024.3457492\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A highly sensitive method utilizing coarse frequency sampling and Vernier effect for optoelectronic oscillator (OEO) based fiber Bragg grating (FBG) sensing system is proposed and experimentally demonstrated. To generate the Vernier effect, the frequency sampling interval is set close to the free spectral range of the OEO. Cubic spline fitting and power normalization were applied to obtain smooth sampling curve. The peak frequency of the fitted curve was chosen to measure the spectral shift. In the temperature test experiment, a controllable sensitivity was achieved by changing the sampling interval. The sensitivity of 222.84kHz\\n<inline-formula> <tex-math>$/^{\\\\circ }$ </tex-math></inline-formula>\\nC was obtained, which was 127.26 times higher than that of traditional single-loop OEO. Our method requires no modifications to the sensing circuit. Furthermore, it can be used in other OEO-based sensors, indicating promising application prospects.\",\"PeriodicalId\":13065,\"journal\":{\"name\":\"IEEE Photonics Technology Letters\",\"volume\":\"36 21\",\"pages\":\"1265-1268\"},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Photonics Technology Letters\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10671584/\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Technology Letters","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10671584/","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Highly Sensitive Optoelectronic Oscillator-Based FBG Sensor via Coarse Sampling and Vernier Effect
A highly sensitive method utilizing coarse frequency sampling and Vernier effect for optoelectronic oscillator (OEO) based fiber Bragg grating (FBG) sensing system is proposed and experimentally demonstrated. To generate the Vernier effect, the frequency sampling interval is set close to the free spectral range of the OEO. Cubic spline fitting and power normalization were applied to obtain smooth sampling curve. The peak frequency of the fitted curve was chosen to measure the spectral shift. In the temperature test experiment, a controllable sensitivity was achieved by changing the sampling interval. The sensitivity of 222.84kHz
$/^{\circ }$
C was obtained, which was 127.26 times higher than that of traditional single-loop OEO. Our method requires no modifications to the sensing circuit. Furthermore, it can be used in other OEO-based sensors, indicating promising application prospects.
期刊介绍：
IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.
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