{"title":"基于光传播的光纤中背散射光建模","authors":"W. Z. Wan Ismail","doi":"10.32802/asmscj.2023.1353","DOIUrl":null,"url":null,"abstract":"Nowadays, fibre optic sensors have been widely used to detect temperature, pressure, vibration and other physical properties. To design high performance fibre optics sensors, sensing elements such as light propagation need to be investigated for parameters such as absorbance, transmittance and scattering. In this study, the backscattered light is studied and modelled using MATLAB based on Brillouin and Rayleigh scattering. The scattering effects on the output power and Stokes power are clearly seen where both powers reduce with the increase of fibre length. The Rayleigh power in terms of Coherent Rayleigh Noise is studied where broader source linewidth, higher spatial resolution and lower group velocity produce less noise. The less fluctuation due to noise can be attributed to the less temporal and spatial fluctuations of the optical pump power or pump current. The output from this research can benefit experimental studies to design fibre optic sensors in future.","PeriodicalId":38804,"journal":{"name":"ASM Science Journal","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Modelling Backscattered Light in Fibre Optic Based on Light Propagation\",\"authors\":\"W. Z. Wan Ismail\",\"doi\":\"10.32802/asmscj.2023.1353\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Nowadays, fibre optic sensors have been widely used to detect temperature, pressure, vibration and other physical properties. To design high performance fibre optics sensors, sensing elements such as light propagation need to be investigated for parameters such as absorbance, transmittance and scattering. In this study, the backscattered light is studied and modelled using MATLAB based on Brillouin and Rayleigh scattering. The scattering effects on the output power and Stokes power are clearly seen where both powers reduce with the increase of fibre length. The Rayleigh power in terms of Coherent Rayleigh Noise is studied where broader source linewidth, higher spatial resolution and lower group velocity produce less noise. The less fluctuation due to noise can be attributed to the less temporal and spatial fluctuations of the optical pump power or pump current. The output from this research can benefit experimental studies to design fibre optic sensors in future.\",\"PeriodicalId\":38804,\"journal\":{\"name\":\"ASM Science Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-08-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ASM Science Journal\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.32802/asmscj.2023.1353\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Multidisciplinary\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ASM Science Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.32802/asmscj.2023.1353","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Multidisciplinary","Score":null,"Total":0}
Modelling Backscattered Light in Fibre Optic Based on Light Propagation
Nowadays, fibre optic sensors have been widely used to detect temperature, pressure, vibration and other physical properties. To design high performance fibre optics sensors, sensing elements such as light propagation need to be investigated for parameters such as absorbance, transmittance and scattering. In this study, the backscattered light is studied and modelled using MATLAB based on Brillouin and Rayleigh scattering. The scattering effects on the output power and Stokes power are clearly seen where both powers reduce with the increase of fibre length. The Rayleigh power in terms of Coherent Rayleigh Noise is studied where broader source linewidth, higher spatial resolution and lower group velocity produce less noise. The less fluctuation due to noise can be attributed to the less temporal and spatial fluctuations of the optical pump power or pump current. The output from this research can benefit experimental studies to design fibre optic sensors in future.
期刊介绍:
The ASM Science Journal publishes advancements in the broad fields of medical, engineering, earth, mathematical, physical, chemical and agricultural sciences as well as ICT. Scientific articles published will be on the basis of originality, importance and significant contribution to science, scientific research and the public. Scientific articles published will be on the basis of originality, importance and significant contribution to science, scientific research and the public. Scientists who subscribe to the fields listed above will be the source of papers to the journal. All articles will be reviewed by at least two experts in that particular field.