A laser access method and device based on space division multiplexing
An access method and space division multiplexing technology are applied in the field of laser access methods and devices based on space division multiplexing, and can solve the problems of inability to transmit many-to-one in real time, unable to meet usage requirements, and low communication efficiency, and to achieve The effect of improving energy utilization, simple structure and improving signal transmission accuracy
Active Publication Date: 2020-10-09
NO 27 RES INST CHINA ELECTRONICS TECH GRP
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Problems solved by technology
However, since the laser access device in point-to-point laser communication can only perform one-to-one data transmission, but cannot perform many-to-one real-time transmission, it has defects such as low communication efficiency and large limitations, which cannot meet the current increasing standards for the use of
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[0040] Such as figure 1 As shown, the present invention includes a laser access method and device based on space division multiplexing.
[0041] Access methods include:
[0042] A laser access method based on space division multiplexing, characterized in that: comprising the following steps:
[0043] A. Equipment installation and debugging; install receiving lens 1, optical fiber array 2 and optical cross-connect device 3 in sequence;
[0044] B. Adjust the direction of the device according to the movement trajectory of the communication satellite, so that the relative movement trajectory of the communication satellite launch within the predetermined test period generates a mapping trajectory on the focal plane;
[0045] C. The receiving lens 1 receives communication satellite signal transmission;
[0046] D. The communication satellite signal is transmitted to the optical fiber array 2 at the focal plane after being focused by the receiving lens 1, and the output port of t...
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The invention discloses a laser access method and device based on space division multiplexing. A laser access device composed of a receiving lens, an optical fiber array arranged on the focal plane ofthe receiving lens and an optical cross connector is adopted. The equipment direction is adjusted according to the motion trail of the communication satellite to enable the communication satellite toemit a relative motion trail to generate a mapping trail on a focal plane in a predetermined test time period, then a communication satellite signal is transmitted to the optical fiber array after passing through the receiving lens, a space division optical fiber output port of the optical fiber array generates a space division optical fiber output signal, finally, the space division optical fiber output signal is output to the control center after passing through the optical cross connection equipment, and an optical signal is dynamically exchanged to the fixed space division optical fiber output port. Terminal signals in different directions and positions can be subjected to space division, signal light beams emitted by a user satellite are converted and guided into the fixed port and output in real time so as to be used by subsequent all-optical switching equipment, and the design requirements of a large-view-field and multi-user access optical system are met.
Description
technical field [0001] The invention relates to the technical field of space optical communication and laser network access equipment, in particular to a laser access method and device based on space division multiplexing. Background technique [0002] At present, most satellite optical communication networks are point-to-point laser communications, such as SILEX and TERRA-SAR of the European Space Agency, LLCD of the United States, LUCE and LCE systems of Japan, all of which are point-to-point laser communications. Peer-to-peer trials. However, since the laser access device in point-to-point laser communication can only perform one-to-one data transmission, but cannot perform many-to-one real-time transmission, it has defects such as low communication efficiency and large limitations, which cannot meet the current increasing standard of use requirements. Therefore, how to study a set of laser access devices that can realize multiple satellites to communicate with one sate...
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IPC IPC(8): H04B10/11H04B10/25
CPCH04B10/11
Inventor 魏龙超常颖徐欢天李番张辉刘玉龙
Owner NO 27 RES INST CHINA ELECTRONICS TECH GRP