Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere
Aiming at the demand for high-capacity wireless-fiber link, the coupling efficiency of Laguerre Gaussian (LG) vortex beam into parabolic fiber under atmospheric turbulence is first investigated. The coupling model is established based on vortex mode analysis in free space and fiber. Effects of turbu...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8894446/ |
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| _version_ | 1849710509446660096 |
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| author | Lin Yu Yixin Zhang |
| author_facet | Lin Yu Yixin Zhang |
| author_sort | Lin Yu |
| collection | DOAJ |
| description | Aiming at the demand for high-capacity wireless-fiber link, the coupling efficiency of Laguerre Gaussian (LG) vortex beam into parabolic fiber under atmospheric turbulence is first investigated. The coupling model is established based on vortex mode analysis in free space and fiber. Effects of turbulence on coupling efficiency are analyzed, from which the way for system optimization is proposed to mitigate the efficiency decline. We find that LG beam with small OAM number, low radial index and long wavelength is able to achieve higher coupling efficiency in turbulent atmospheric conditions. As for the transmitting beam waist of LG beam or the focal length of receiving lens, there exist optimal values to realize size matching between spatial and fiber modes for coupling. The results are beneficial to the design of coupling system. |
| format | Article |
| id | doaj-art-1fe1032e879b4049bc9a227eaefb9db6 |
| institution | DOAJ |
| issn | 1943-0655 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-1fe1032e879b4049bc9a227eaefb9db62025-08-20T03:14:53ZengIEEEIEEE Photonics Journal1943-06552019-01-011161810.1109/JPHOT.2019.29522838894446Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent AtmosphereLin Yu0https://orcid.org/0000-0001-9974-4699Yixin Zhang1https://orcid.org/0000-0002-3240-6174School of Science, Jiangnan University, Wuxi, ChinaSchool of Science, Jiangnan University, Wuxi, ChinaAiming at the demand for high-capacity wireless-fiber link, the coupling efficiency of Laguerre Gaussian (LG) vortex beam into parabolic fiber under atmospheric turbulence is first investigated. The coupling model is established based on vortex mode analysis in free space and fiber. Effects of turbulence on coupling efficiency are analyzed, from which the way for system optimization is proposed to mitigate the efficiency decline. We find that LG beam with small OAM number, low radial index and long wavelength is able to achieve higher coupling efficiency in turbulent atmospheric conditions. As for the transmitting beam waist of LG beam or the focal length of receiving lens, there exist optimal values to realize size matching between spatial and fiber modes for coupling. The results are beneficial to the design of coupling system.https://ieeexplore.ieee.org/document/8894446/Laguerre Gaussian vortex beamparabolic fiber couplingatmospheric turbulencefree-space optical communication. |
| spellingShingle | Lin Yu Yixin Zhang Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere IEEE Photonics Journal Laguerre Gaussian vortex beam parabolic fiber coupling atmospheric turbulence free-space optical communication. |
| title | Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere |
| title_full | Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere |
| title_fullStr | Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere |
| title_full_unstemmed | Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere |
| title_short | Investigation on the Coupling of Vortex Beam Into Parabolic Fiber in Turbulent Atmosphere |
| title_sort | investigation on the coupling of vortex beam into parabolic fiber in turbulent atmosphere |
| topic | Laguerre Gaussian vortex beam parabolic fiber coupling atmospheric turbulence free-space optical communication. |
| url | https://ieeexplore.ieee.org/document/8894446/ |
| work_keys_str_mv | AT linyu investigationonthecouplingofvortexbeamintoparabolicfiberinturbulentatmosphere AT yixinzhang investigationonthecouplingofvortexbeamintoparabolicfiberinturbulentatmosphere |