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Device and method for measuring isolation degree of optical antenna in laser communication system

An optical antenna and laser communication technology, applied in the field of optical measurement, can solve problems such as optical antenna isolation measurement, and achieve the effects of improving test accuracy, simple structure, and reducing optical energy loss

Pending Publication Date: 2018-03-06
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] Based on the above background, the present invention proposes a device and method for measuring the isolation of the optical antenna of the laser communication system, which solves the problem of measuring the isolation of the optical antenna

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  • Device and method for measuring isolation degree of optical antenna in laser communication system
  • Device and method for measuring isolation degree of optical antenna in laser communication system
  • Device and method for measuring isolation degree of optical antenna in laser communication system

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Embodiment Construction

[0036] The following is attached Figure 1-Figure 3 The present invention is further described.

[0037] like figure 1 As shown, the laser communication system optical antenna isolation measuring device of the present invention includes a light source 101, a beam splitter 102, a mirror one 103, an optical power meter 104, a mirror two 106 and an aperture 107, the aperture 107, the beam splitter 102 and the reflector Mirror one 103 is arranged sequentially along the optical axis of the light source; reflector two 106 is arranged on the reflected light path of the beam splitter 102; the optical antenna 105 to be tested is arranged between the beam splitter 102 and the second reflector 106; the light emitted by the light source 101 is approximately parallel Light, the beam aperture of this approximately parallel light is less than the aperture of beam splitter 102, mirror one 103, optical power meter 104 and mirror two 106, and the optical axis is parallel to the normal directio...

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Abstract

The invention provides a device and method for measuring the isolation degree of an optical antenna in a laser communication system in order to solve a problem of measuring the isolation degree of theoptical antenna. The measuring device comprises a light source, a spectroscope, a reflecting mirror I, an optical power meter, a reflecting mirror II and a diaphragm, wherein the diaphragm, the spectroscope and the reflecting mirror I are sequentially arranged along an optical axis of the light source; the reflecting mirror II is arranged on a reflected light path of the spectroscope; a space forsetting a measured optical antenna is reserved between the reflecting mirror II and the spectroscope, or a space for setting the measured optical antenna is reserved between the reflecting mirror I and the spectroscope; the reflecting mirror located at the same light path with the measured optical antenna is used for performing attitude adjustment on the measured optical antenna and does not participate in the measuring process of the isolation degree; and the optical power meter is arranged the side, which does not have an optical element, of the spectroscope. The measuring device can realize fast measurement for the isolation degree of the optical antenna for laser communication and has low requirements for the stability of the laser light source.

Description

technical field [0001] The invention belongs to the field of optical measurement, and relates to an optical antenna isolation measurement device and method. Background technique [0002] Compared with the traditional microwave space communication method, space laser communication has outstanding characteristics such as broadband, high speed, strong anti-interception and anti-interference ability, light and small size, etc. Information transfer. With the development of space remote sensing technology, the resolution of space cameras and the spatial and spectral resolution of spectroscopic instruments have been greatly improved. A large amount of space detection data needs to be transmitted to the ground in real time for technicians and experts to analyze and refine to realize space instrumentation. application value. At present, the microwave bandwidth commonly used on satellites is about 100M, which is close to the theoretical limit of microwave communication. However, the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/00
Inventor 李晶薛勋刘尚阔赵建科李坤昌明曹昆王争锋宋琦鄂可伟马小龙
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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