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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Shibo Yan Zhenggang Lian Shuqin Lou Xin Wang Wan Zhang Zijuan Tang |
| Abstract | We propose a new method to achieve single-polarization guidance in a hollow-core negative-curvature fiber. Simulation results show that coating a layer of high-index material with a suitable thickness on the inner surface of one vertical cladding tube in a hollow-core negative-curvature fiber can effectively suppress y-polarized fundamental mode. Silicon is chosen as the high-index material in this paper. In the five-nested-tube silicon-coated negative-curvature fiber, the single-polarization region is located in the wavelength range of 1512-1587 nm with a broad bandwidth of 75 nm. The polarization extinction ratio is up to 1732 at the wavelength of 1550 nm. Moreover, the mode evolutions of xand y-polarized fundamental modes in the five-nested-tube silicon-coated negative-curvature fiber are investigated to explain why y-polarized fundamental mode is suppressed. Compared with the traditional method of using different tube thicknesses to achieve single-polarization guidance in a negative-curvature fiber, this method possesses the advantages of broad single-polarization bandwidth and high error tolerance. |
| e-ISSN | 21693536 |
| DOI | 10.1109/ACCESS.2020.2981252 |
| Journal | IEEE Access |
| Volume Number | 8 |
| Language | English |
| Publisher | IEEE |
| Publisher Date | 2020-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Electrical Engineering. Electronics. Nuclear Engineering Hollow-core Negative-curvature Fiber High Polarization Extinction Ratio Single-polarization |
| Content Type | Text |
| Resource Type | Article |
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