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 Name | Applied Optics and Photonics China 2021 |
Source Publication | SPIE Novel Technologies and Instruments for Astronomical Multi-Band Observations |
Volume | 12069 |
Conference Date | 2021-7(23-25) |
Conference Place | Beijing, 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. |
Keyword | High-resolution Integrated photonic spectrograph Astrophotonics Arrayed waveguides |
Subject Area | 天文技术与方法 |
Document Type | 会议论文 |
Identifier | http://ir.niaot.ac.cn/handle/114a32/1947 |
Collection | 会议论文 中国科学院南京天文光学技术研究所知识成果 |
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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