A device and system for improving optical communication reliability

Abstract

The embodiment of the invention discloses a device for improving the photo-communication reliability. The device comprises at least two different transmitting lenses, wherein the transmitting lenses comprise a first transmitting lens and a second transmitting lens; the spatial transmitting angle of the first transmitting lens is 1.3-1.7 milliradian; and the spatial transmitting angle of the second transmitting lens is 1.8-2.2 milliradian. The embodiment of the invention further discloses a system for improving the photo-communication reliability. By utilizing the device and the system which are disclosed by the invention, the light transmission range and the receiving power of a receiving terminal are increased and the photo-communication stability and reliability are improved on the premise of ensuring that a communication link is connected.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a device and system for improving the reliability of optical communication. Background technique [0002] In FreeSpace Optical Communication (FreeSpaceOptic, FSO) equipment, in order to improve the space transmission distance, there are two schemes that can be considered. The first one is to increase the laser transmission power of the space transmitter or the receiving sensitivity of the space receiver as much as possible to ensure that the receiver has a larger The received signal power redundancy. For this scheme, it mainly depends on the inherent performance of the laser at the transmitting end and the detector at the receiving end. When the hardware design scheme is determined, it is difficult to tap the potential. [0003] The second is to adjust the optical design and adopt a smaller emission angle to ensure that the power of the space emission signal is more concentr...

AI Technical Summary

Problems solved by technology

But in practical application, for this scheme, when the space launch angle is small, the field installation and alignment of FSO equipment is very inconvenient, and the operation is unstable

Because the space emission angle is small, the diameter of the light spot reaching the receiving end is also relatively small, and the installation and alignment are difficult, which makes it difficult to establish a communication link at the receiving end; Smaller angles will cause the emission spot to be out of the receiving range of the receiving end, resulting in the interruption of the communication link and unable to ensure the reliability of communication

If the space launch angle is large, although it is beneficial for installation, alignment and operation, due to the divergence of transmit power, the receive power is weak and the transmission distance is short, which is also not conducive to the reliability of communication.

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