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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
Conference NameApplied Optics and Photonics China 2021
Source PublicationSPIE Novel Technologies and Instruments for Astronomical Multi-Band Observations
Volume12069
Conference Date2021-7(23-25)
Conference PlaceBeijing, China
Abstract

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.

KeywordHigh-resolution Integrated photonic spectrograph Astrophotonics Arrayed waveguides
Subject Area天文技术与方法
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/1947
Collection中国科学院南京天文光学技术研究所_会议论文
中科院天文光学技术重点实验室_会议论文
中科院南京天光所知识成果
Affiliation南京天文光学技术研究所
Recommended Citation
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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