{"title":"混沌相关OTDR信噪比的改进","authors":"B. Wang, Anbang Wang, Hua-kui Wang, Yun-cai Wang","doi":"10.1109/SOPO.2012.6271059","DOIUrl":null,"url":null,"abstract":"We demonstrate some methods to improve the correlation performance and signal-to-noise ratio (SNR) of chaos correlation OTDR. By inserting a fiber ring resonator in the external cavity of laser diode with optical feedback, we optimize the chaotic laser source to eliminate the high side-lobe corresponding to the length of external cavity. The side-lobe noise of correlation trace induced by the randomness of chaotic signal and other noise interferences will limit the SNR and measurement range of chaos correlation OTDR. We also show that this limitation can be mitigated by using the wavelet de-noising method and the correlation average discrete-component elimination algorithm.","PeriodicalId":159850,"journal":{"name":"2012 Symposium on Photonics and Optoelectronics","volume":"34 9","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Improvement of Signal-to-Noise Ratio in the Chaos Correlation OTDR\",\"authors\":\"B. Wang, Anbang Wang, Hua-kui Wang, Yun-cai Wang\",\"doi\":\"10.1109/SOPO.2012.6271059\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We demonstrate some methods to improve the correlation performance and signal-to-noise ratio (SNR) of chaos correlation OTDR. By inserting a fiber ring resonator in the external cavity of laser diode with optical feedback, we optimize the chaotic laser source to eliminate the high side-lobe corresponding to the length of external cavity. The side-lobe noise of correlation trace induced by the randomness of chaotic signal and other noise interferences will limit the SNR and measurement range of chaos correlation OTDR. We also show that this limitation can be mitigated by using the wavelet de-noising method and the correlation average discrete-component elimination algorithm.\",\"PeriodicalId\":159850,\"journal\":{\"name\":\"2012 Symposium on Photonics and Optoelectronics\",\"volume\":\"34 9\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2012-05-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2012 Symposium on Photonics and Optoelectronics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/SOPO.2012.6271059\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2012 Symposium on Photonics and Optoelectronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/SOPO.2012.6271059","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Improvement of Signal-to-Noise Ratio in the Chaos Correlation OTDR
We demonstrate some methods to improve the correlation performance and signal-to-noise ratio (SNR) of chaos correlation OTDR. By inserting a fiber ring resonator in the external cavity of laser diode with optical feedback, we optimize the chaotic laser source to eliminate the high side-lobe corresponding to the length of external cavity. The side-lobe noise of correlation trace induced by the randomness of chaotic signal and other noise interferences will limit the SNR and measurement range of chaos correlation OTDR. We also show that this limitation can be mitigated by using the wavelet de-noising method and the correlation average discrete-component elimination algorithm.
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