| Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler | |
| Luo, Wen1,2,3; Geng, Chao1,2; Wu, Yun-Yun1,2,3; Tan, Yi1,2,3; Luo, Qi1,2,3; Liu, Hong-Mei1,2,3; Li, Xin-Yang1,2; Li, X.-Y. (xyli@ioe.ac.cn) | |
| Source Publication | Chinese Physics B
 |
| Volume | 23Issue:1Pages:014207 |
| 2014 | |
| Language | 英语 |
| ISSN | 16741056 |
| DOI | 10.1088/1674-1056/23/1/014207 |
| Indexed By | SCI ; Ei |
| WOS ID | WOS:000331805400040 |
| Subtype | 期刊论文 |
| Abstract | Coupling plane wave into a single-mode fiber (SMF) with high and steady coupling efficiency is crucial for fiber-based free-space laser systems, where random angular jitters are the main influencing factors of fiber coupling. In this paper, we verified a new adaptive-optic device named adaptive fiber coupler (AFC) which could compensate angular jitters and improve the SMF coupling efficiency in some degree. Experiments of SMF coupling under the angular jitter situation using AFC have been achieved. Stochastic parallel gradient descent (SPGD) algorithm is employed as the control strategy, of which the iteration rate is 625 Hz. In closed loop, the coupling efficiency keeps above 65% when angular errors are below 80 μrad. The compensation bandwidth is 35 Hz at sine-jitter of 15 μrad amplitude with average coupling efficiency of above 60%. Also, experiments with simulated turbulence have been studied. The average coupling efficiency increases from 31.97% in open loop to 61.33% in closed loop, and mean square error (MSE) of coupling efficiency drops from 7.43% to 1.75%. © 2014 Chinese Physical Society and IOP Publishing Ltd.; Coupling plane wave into a single-mode fiber (SMF) with high and steady coupling efficiency is crucial for fiber-based free-space laser systems, where random angular jitters are the main influencing factors of fiber coupling. In this paper, we verified a new adaptive-optic device named adaptive fiber coupler (AFC) which could compensate angular jitters and improve the SMF coupling efficiency in some degree. Experiments of SMF coupling under the angular jitter situation using AFC have been achieved. Stochastic parallel gradient descent (SPGD) algorithm is employed as the control strategy, of which the iteration rate is 625 Hz. In closed loop, the coupling efficiency keeps above 65% when angular errors are below 80 μrad. The compensation bandwidth is 35 Hz at sine-jitter of 15 μrad amplitude with average coupling efficiency of above 60%. Also, experiments with simulated turbulence have been studied. The average coupling efficiency increases from 31.97% in open loop to 61.33% in closed loop, and mean square error (MSE) of coupling efficiency drops from 7.43% to 1.75%. © 2014 Chinese Physical Society and IOP Publishing Ltd. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ioe.ac.cn/handle/181551/6377 |
| Collection | 自适应光学技术研究室（八室） |
| Corresponding Author | Li, X.-Y. (xyli@ioe.ac.cn) |
| Affiliation | 1. Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China 2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China 3. University of Chinese Academy of Sciences, Beijing 100049, China |
| Recommended Citation GB/T 7714 | Luo, Wen,Geng, Chao,Wu, Yun-Yun,et al. Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler[J]. Chinese Physics B,2014,23(1):014207. |
| APA | Luo, Wen.,Geng, Chao.,Wu, Yun-Yun.,Tan, Yi.,Luo, Qi.,...&Li, X.-Y. .(2014).Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler.Chinese Physics B,23(1),014207. |
| MLA | Luo, Wen,et al."Experimental demonstration of single-mode fiber coupling using adaptive fiber coupler".Chinese Physics B 23.1(2014):014207. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2014-2020.pdf（402KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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