密排光波导多目标光谱探测技术研究  

Multi-objects Spectroscopy with Compact Arranged Optical Waveguides

作　　者：林栋 朱壮壮 冯吉军 何晋平 LIN Dong;ZHU Zhuangzhuang;FENG Jijun;HE Jinping(National Astronomical Observatories/Nanjing Institute of Astronomical Optics&Technology,Laboratory of Solar and Space Instrument,Nanjing 210042,China;CAS Key Laboratory of Astronomical Optics&Technology,Nanjing 210042,China;University of Chinese Academy of Sciences,Beijing 100049,China;University of Shanghai for Science and Technology,School of Optical-Electrical and Computer Engineering,Shanghai 200093,China;College of Nanjing,University of Chinese Academy of Science,Nanjing 211135,China)

机构地区：[1]中国科学院国家天文台南京天文光学技术研究所,太阳与空间仪器研究室,南京210042 [2]中国科学院天文光学技术重点实验室,南京210042 [3]中国科学院大学,北京100049 [4]上海理工大学光电信息与计算机工程学院,上海200093 [5]中国科学院大学南京学院,南京211135

出　　处：《光子学报》2023年第5期163-171,共9页Acta Photonica Sinica

基　　金：国家自然科学基金(Nos.11933005,11773045,11973009)。

摘　　要：利用密排波导光子芯片作为多目标输入机构,将多目标光谱仪同步探测能力提高至少4倍,且芯片光学效率大于90%。另外,由于各输入信道均被集成在芯片内,所有目标光谱在探测器上几无相对空间移动,有利于获取高光谱稳定性。本文研究有望为极多目标观测,尤其是空间大规模光谱巡天或积分视场天文观测提供有竞争力的多目标输入机构解决方案。Multi-object spectroscopic detection has become one of the most important tools in astronomical observation,as it can simultaneously obtain a large amount of spectral information from celestial bodies.Astronomers have developed numerous research achievements in galaxy structure and evolution,outer planet detection and research,and cosmic large-scale structures and evolution through massive spectral data.The astronomical community has set up multiple large-scale spectral survey dedicated telescopes,obtaining tens of millions of spectral information in the past few decades.However,compared to the vast number of celestial bodies in the universe,the current amount of spectral data is still insignificant.For instance,the number of galaxies alone may exceed 100 billion,with an extremely large number of celestial bodies in each galaxy,such as the 100 billion to 400 billion stars in our Milky Way galaxy.Therefore,there is still much more unknown information waiting for exploration.In recent years,China has been actively promoting the second-phase project of survey telescopes and the establishment of new large-scale survey telescopes to maintain its world-leading position in large-scale spectroscopic survey technology and corresponding astronomical scientific research.This requires a significant increase in the number of multiobject spectroscopic detections.However,observing so many celestial spectra at the same time still presents significant technological and cost challenges.Currently,multi-object spectroscopy is generally based on fiber optic spectrographs.After collecting multi-object signals at the telescope focal plane,numerous fibers form a one-dimensional array at the entrance slit of the spectrograph,ultimately achieving multi-target spectral detection on a single instrument.With the same physical field of view,known large multi-object fiber optic spectrographs can measure hundreds of celestial spectra simultaneously due to their close to 300 mm aperture.However,only synchronously observing several hundred target

关 键 词：多目标光谱 密排波导 多目标输入 天文光子学 光谱巡天 

分 类 号：P141.5[天文地球—天体物理]