Control Bandwidth Promotion of Adaptive Fiber-Optics Collimator and Its Application in Coherent Beam Combination
文献类型：期刊论文
| 作者 | Huang, Guan1,2,3; Geng, Chao1,2; Li, Feng1,2; Liu, Jiaying1,2,3; Li, Xinyang1,2 |
| 刊名 | IEEE PHOTONICS JOURNAL
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 10期号:6页码:7105513 |
| 关键词 | Coherent beam combining adaptive fiber-optics collimator biquad filters precise-delayed SPGD algorithm |
| ISSN号 | 1943-0655 |
| DOI | 10.1109/JPHOT.2018.2876136 |
| 文献子类 | J |
| 英文摘要 | Adaptive fiber-optics collimator (AFOC) plays an important role in the coherent beam combining (CBC) systems. To improve the control bandwidth, the frequency characteristics of AFOC are measured, and an accurate transfer function model is established. Through the analysis of this model, we find that the resonance and the inherent response delay are the main limiting factors. To solve these two problems, an active resonance suppression method based on biquad filters and an improved control algorithm named precise-delayed stochastic parallel gradient descent (PD-SPGD) is proposed. The resonance suppression experiment shows that when the frequency is within 10 kHz, the fluctuation in the AFOC's amplitude-frequency characteristic is suppressed within +/- 3 dB by the biquad filters, and the phase-frequency characteristic is compensated to be similar to a pure delay element (with inherent response delay of about 88 mu s). The two-channel CBC experiment shows that the algorithm's iteration rate increased from 1.6 to 6 kHz and the convergence time decreased from 5.63 to 1.83 ms when the biquad filters and PD-SPGD are used together, which indicate that the AFOC's actual control bandwidth is about 3.1 times higher than before. |
| WOS关键词 | MIRROR ; TILT ; TIP |
| 语种 | 英语 |
| WOS记录号 | WOS:000449084900001 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/9284]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 作者单位 | 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 |
| 推荐引用方式 GB/T 7714 | Huang, Guan,Geng, Chao,Li, Feng,et al. Control Bandwidth Promotion of Adaptive Fiber-Optics Collimator and Its Application in Coherent Beam Combination[J]. IEEE PHOTONICS JOURNAL,2018,10(6):7105513. |
| APA | Huang, Guan,Geng, Chao,Li, Feng,Liu, Jiaying,&Li, Xinyang.(2018).Control Bandwidth Promotion of Adaptive Fiber-Optics Collimator and Its Application in Coherent Beam Combination.IEEE PHOTONICS JOURNAL,10(6),7105513. |
| MLA | Huang, Guan,et al."Control Bandwidth Promotion of Adaptive Fiber-Optics Collimator and Its Application in Coherent Beam Combination".IEEE PHOTONICS JOURNAL 10.6(2018):7105513. |
入库方式： OAI收割
来源：光电技术研究所
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