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Research progress of high-resolution arrayed waveguide spectroscopy
Lin D(林栋); Zhu ZZ(朱壮壮); Zhu XM(朱小明); He JP(何晋平)
2021-11
会议名称Applied Optics and Photonics China 2021
会议录名称SPIE Novel Technologies and Instruments for Astronomical Multi-Band Observations
卷号12069
会议日期2021-7(23-25)
会议地点Beijing, China
摘要

In recent years, astronomical observation has put forward higher requirements for observation environment, resolution power and simultaneous observation quantity, which makes the cost of traditional spectrometer spiraling. The development of  integrated  photonics  provides  a  miniaturized,  low-cost  and  environment-friendly  solution  for  astronomical  spectral observation. However, high resolution spectrum is hard to achieve because of the highly repetitive structure and defocus aberration existing in re-imaging system when needing cross dispersion. Based on Silica-on-Silicon material platform with a refractive index contrast of 0.23%, new structure of cascaded modulation arrayed waveguides(CMAW) with total length difference  of  22mm  are  arranged  in  a  square  chip  with  a  side  length  of  40mm,  having  a  theoretical  resolution  of  20,000@1550nm and tested resolution of 15,000@1550nm. Our work demonstrates the potential of integrated photonics applying in high resolution astronomical spectral observation, three times above the record of available resolution power international, which is expected to provide a solution for space observation and large-scale spectral survey.

关键词High-resolution Integrated photonic spectrograph Astrophotonics Arrayed waveguides
学科领域天文技术与方法
文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/1947
专题会议论文
中国科学院南京天文光学技术研究所知识成果
作者单位南京天文光学技术研究所
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GB/T 7714
Lin D,Zhu ZZ,Zhu XM,et al. Research progress of high-resolution arrayed waveguide spectroscopy[C],2021.
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