DEEM, a versatile platform of FRD measurement for highly multiplexed fibre systems in astronomy
文献类型：期刊论文
| 作者 | Yan, Yunxiang1,2; Yan, Qi3; Wang, Gang1; Sun, Weimin3; Luo, A-Li1; Ma, Zhenyu3; Zhang, Qiong3; Li, Jian1; Wang, Shuqing1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 476期号:4页码:4279-4314 |
| 关键词 | instrumentation: miscellaneous instrumentation: spectrographs methods: data analysis techniques: miscellaneous techniques: spectroscopic |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/sty461 |
| 英文摘要 | We present a new method of DEEM, the direct energy encircling method, for characterizing the performance of fibres in most astronomical spectroscopic applications. It is a versatile platform to measure focal ratio degradation (FRD), throughput, and point spread function. The principle of DEEM and the relation between the encircled energy and the spot size were derived and simulated based on the power distributionmodel (PDM). We analysed the errors of DEEM and pointed out the major error source for better understanding and optimization. The validation of DEEM has been confirmed by comparing the results with conventional method which shows that DEEM has good robustness with high accuracy in both stable and complex experiment environments. Applications on the integral field unit (IFU) show that the FRD of 50 mu m core fibre is substandard for the requirement which requires the output focal ratio to be slower than 4.5. The homogeneity of throughput is acceptable and higher than 85 per cent. The prototype IFU of the first generation helps to find out the imperfections to optimize the new design of the next generation based on the staggered structure with 35 mu m core fibres of N.A. = 0.12, which can improve the FRD performance. The FRD dependence on wavelength and core size is revealed that higher output focal ratio occurs at shorter wavelengths for large core fibres, which is in agreement with the prediction of PDM. But the dependence of the observed data is weaker than the prediction. |
| WOS关键词 | FOCAL-RATIO DEGRADATION ; OPTICAL-FIBERS ; HIGH-RESOLUTION ; MODAL NOISE ; FIELD UNIT ; INSTRUMENTATION ; TEMPERATURES ; SPECTROGRAPH ; SELECTION ; DESIGN |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000432659800001 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/21744]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Yan, Yunxiang; Sun, Weimin |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Harbin Engn Univ, Key Lab Infiber Integrated Opt, Minist Educ China, Harbin 150001, Heilongjiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Yunxiang,Yan, Qi,Wang, Gang,et al. DEEM, a versatile platform of FRD measurement for highly multiplexed fibre systems in astronomy[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(4):4279-4314. |
| APA | Yan, Yunxiang.,Yan, Qi.,Wang, Gang.,Sun, Weimin.,Luo, A-Li.,...&Wang, Shuqing.(2018).DEEM, a versatile platform of FRD measurement for highly multiplexed fibre systems in astronomy.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(4),4279-4314. |
| MLA | Yan, Yunxiang,et al."DEEM, a versatile platform of FRD measurement for highly multiplexed fibre systems in astronomy".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.4(2018):4279-4314. |
入库方式： OAI收割
来源：国家天文台
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