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Wireless laser communication transmission method and system

A wireless laser and transmission system technology, applied in the field of wireless communication, can solve the problem of low transmission efficiency of wireless laser signals and achieve the effect of improving transmission efficiency

Inactive Publication Date: 2014-10-15
北京国科环宇科技股份有限公司
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Problems solved by technology

[0023] To sum up, the existing wireless laser communication transmission methods have at least the following defects: due to the occlusion of the secondary mirror, the transmission efficiency of wireless laser signal transmission is low

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  • Wireless laser communication transmission method and system
  • Wireless laser communication transmission method and system
  • Wireless laser communication transmission method and system

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings.

[0046] The beam generated by the source laser is a Gaussian beam. When the Gaussian beam is used for transmission in free space, the beam emission efficiency will be low due to the blocking of the secondary mirror. If the Gaussian beam can be modulated into a laser beam with a hollow beam, and the light can be transmitted in free space; in this way, even if the center is blocked, the emission efficiency will not be affected because the center beam intensity is zero, and then solve the problem. existing technical problems.

[0047] see Figure 5 , is a schematic structural diagram of the wireless laser communication transmission system of the present invention, the system includes a light source laser, a secondary mirror, and a primary mirror, and ...

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Abstract

The invention discloses a wireless laser communication transmission method and system. The system includes a light source laser, a secondary mirror and a primary mirror, and a first light modulator, a second light modulator and a beam splitter are arranged in sequence between the light source laser and the secondary mirror. The first light modulator performs light intensity modulation on a laser beam from the light source laser, modulates to a laser beam of hollow light intensity, and transmits to the second light modulator; the second light modulator performs phase modulation on the laser beam from the first light modulator, modulates an equipotential phase plane to a plane, and transmits the modulated laser beam to the beam splitter; the beam splitter transmits the laser beam from the second light modulator to the secondary mirror; the secondary mirror reflects the laser beam from the beam splitter to the primary mirror; and the primary mirror reflects the laser beam from the secondary mirror and emits the reflected laser beam. The scheme of the wireless laser communication transmission system in the invention can improve emission efficiency of emitting a wireless laser signal.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a wireless laser communication transmission method and system. Background technique [0002] At present, the free space wireless laser communication system has become an important branch in the field of military and aerospace communication due to its advantages of low cost, good confidentiality, and easy and fast networking. [0003] see figure 1 , is a structural schematic diagram of a wireless laser communication transmission system in the prior art, which includes a light source laser, a primary mirror and a secondary mirror; [0004] The secondary mirror receives the laser beam from the light source laser and reflects it to the primary mirror; [0005] The primary mirror reflects the laser beam from the secondary mirror and emits it. [0006] The primary mirror and the secondary mirror are coaxial, and the wireless laser communication system often becomes a reflective t...

Claims

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Application Information

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IPC IPC(8): H04B10/11
Inventor 牛春晖
Owner 北京国科环宇科技股份有限公司
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