Abstract
Astronomy is an observational discipline, and its improvement is driven by the progress of observation technology and instruments. The advancement of astronomy also constantly puts forward new requirements for observation instruments. Since the development of astronomy, the requirements for observing instruments have gradually become extreme, which brings great challenges in both cost and difficulty. In order to tackle the challenges, a future generation of astronomical optical technology and observation instruments based on new principles and technologies has become an inherent need to promote the advancement of astronomy. In recent years, the growth of integrated photonics has presented revolutionary opportunities for that of astronomical optical technology. On the basis, astrophotonics, an emerging interdisciplinary subject, can provide a new generation of high-performance optical terminal instruments with low cost and high integration (chip-based) for astronomical observation. Such instruments will play a vital role in space astronomical observation, large-scale spectral survey, high-resolution and high-precision spectral imaging, and other applications. This paper mainly introduces the main research contents and status quo of astronomical photonics starting from the instruments/device functions, briefly discusses the major problems in its development, and eventually forecasts its development prospect.
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