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High-spectral-resolution integral view field unit system based on variable-diameter core fiber

A technology of integral field of view and unit system, which is applied to the coupling of optical components, bundled optical fibers, and optical waveguides, can solve problems affecting spectral quality and light loss, and achieve improved spectral resolution, high spectral resolution, and improved The effect of light efficiency

Active Publication Date: 2018-11-06
HARBIN ENG UNIV
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Problems solved by technology

If a slit is used to obtain high spectral resolution, it will cause light loss and may also affect the spectral quality due to slit diffraction

Method used

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  • High-spectral-resolution integral view field unit system based on variable-diameter core fiber
  • High-spectral-resolution integral view field unit system based on variable-diameter core fiber
  • High-spectral-resolution integral view field unit system based on variable-diameter core fiber

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Experimental program
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Embodiment Construction

[0017] combine figure 1 Schematic diagram of the optical path of the system, further explaining the integrated field of view unit system based on the variable diameter core fiber with high spectral resolution:

[0018] In the overall design process of variable-diameter core fiber IFU, it is necessary to make research on fiber selection, micro-lens selection, fiber arrangement and fixing method selection, and system integration method selection.

[0019] figure 1 Among them, 1 is the focal plane of the telescope, 2 is the front optical lens group, 3 is the microlens array, 4 is the variable-diameter core fiber array (the incident end is a large core diameter, and the exit end is a small core diameter), and 5 is the slit end ( is a pseudoslit).

[0020] figure 1 In the above, we regard the focal plane 1 of the telescope as the target to be measured. Through the front optical lens group 2, its image is imaged on the front surface of the microlens array 3, and after being conve...

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Abstract

The invention provides a high-spectral-resolution integral view field unit system based on a variable-diameter core fiber, and relates to the application field of astronomy. In a high-spectral-resolution integral view field unit system device based on the variable-diameter core fiber, the big-diameter end of the variable-diameter core fiber can receive more starlight in a transmission process, andthe loss of energy is small, thereby avoiding the loss of signals. A pseudo-slit formed at the small-diameter end is narrow, an image spot formed on a CCD is small, and the spectrum resolution is high. The method can avoid the diffraction caused by employing an additional slit for improving the resolution. At the aspect of fiber fixing, a micropore positioning method is employed, so the processing efficiency is high, and the structure is simple. A slit end employs a V-shaped groove for arrangement, so the tolerance is small, the spectrum efficiency is high and the consistency is good.

Description

technical field [0001] The invention relates to an integral field of view unit system, in particular to an integral field of view unit system with high spectral resolution based on a variable-diameter core fiber, and belongs to the field of astronomical applications. Background technique [0002] Hyperspectral resolution imaging technology has a wide range of applications in astronomical observation, space exploration and other fields. The hyperspectral resolution of target images is one of the indicators that people have been pursuing. At present, in the field of astronomy, people usually obtain rich information in the universe through spectral detection. Three-dimensional imaging spectroscopy technology is an important technology for astronomical observation. It can simultaneously collect two-dimensional spatial image quality and one-dimensional spectral information of extended targets. . The function of the integral field unit (Integral Field Unit, referred to as IFU) is...

Claims

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Application Information

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IPC IPC(8): G02B6/26G02B6/122G02B6/06
CPCG02B6/06G02B6/1228G02B6/262
Inventor 孙伟民耿涛张琼闫奇金夕人陈旭东蒋航白新宇赵闯于乐
Owner HARBIN ENG UNIV
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