High-precision collimation optical antenna transmitting system capable of loading radial radiation light source

An optical antenna and transmission system technology, applied in the field of optical communication, can solve the problems of energy loss in the center of the secondary mirror of the antenna, and achieve the effects of reducing difficulty, improving radiation power, and improving transmission accuracy and transmission efficiency.

Inactive Publication Date: 2015-06-17
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

[0005] The present invention aims at the shortcomings of the existing optical antenna, solves the key technical problem of energy loss in the center

Method used

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  • High-precision collimation optical antenna transmitting system capable of loading radial radiation light source
  • High-precision collimation optical antenna transmitting system capable of loading radial radiation light source
  • High-precision collimation optical antenna transmitting system capable of loading radial radiation light source

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Embodiment Construction

[0017] The present invention will be further elaborated and described below in conjunction with the drawings and embodiments.

[0018] figure 1 As shown, the Cassegrain-type optical transmitting antenna widely used in space optical communication, because a large amount of energy of the laser Gaussian beam in the axial transmission process is concentrated on the central (optical) axis, the central part of the antenna secondary mirror is reflected to the main mirror circle The energy in the hole cannot be transmitted, and there is a large central energy loss, which will greatly affect the energy transmission of the long-distance space optical communication system.

[0019] figure 2 with image 3 Shown is a ring laser source structure composed of a high-power line source LED ring array of the present invention. The light source selects high-power line source LEDs with a very small divergence angle in the slow axis direction and a large divergence angle in the fast axis direction to f...

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Abstract

The invention belongs to the technical field of optical communication, and particularly relates to a high-precision collimation optical antenna transmitting system capable of loading a radial radiation light source. The antenna transmitting system is designed based on the three-dimensional vector reflection theorem, and comprises an off-axis elliptical rotating curved surface secondary mirror and a confocal paraboloid primary mirror. The radial radiation light source adopted by the antenna transmitting system is a linear laser source generating radial radiation or an annular laser source generating radial radiation, and therefore the radiation power of the light source is obviously improved, and the difficulty of machining is reduced. The high-precision collimation optical antenna transmitting system capable of loading the radial radiation light source mainly solves the key technical problem of energy loss of the center of a secondary mirror of a traditional optical transmitting antenna, can improve the transmitting precision and transmission efficiency of a transmitting antenna in an optical communication system, can achieve high-precision collimating transmission approaching a diffraction limit of laser beams without pre-collimating on output beams of a semiconductor laser, and enables small integration of the optical communication transmitting system to be achieved easily.

Description

Technical field [0001] The invention belongs to the field of optical communication technology, and is specifically a high-precision collimated optical antenna emission system capable of loading a radial radiation laser source. Background technique [0002] The optical antenna system mainly realizes beam expansion of the laser beam and further compresses the divergence angle. Optical antennas are the key transmitting and receiving subsystems in the field of optical communication technology. High-precision collimation accuracy and high transmission efficiency are important guarantees for optical antenna systems to achieve long-distance transmission and high tracking accuracy. [0003] Space optical communication usually involves multi-wavelength transmission, and achromatic reflective system (Cassegrain type) is widely used as transmitting and receiving antennas. Due to the large amount of energy of the laser Gaussian beam during axial transmission, it is concentrated on the central ...

Claims

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Application Information

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IPC IPC(8): H04B10/50G02B17/06
Inventor 杨华军江萍毛盛乾
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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