High-speed underwater optical wireless communication device based on self-adaptive distance of photomultiplier tube

A photomultiplier tube, optical wireless communication technology, applied in electrical components, optical transmission systems, electromagnetic transmitters and other directions, can solve the problems of limited dynamic range of detectors, short communication distance, low communication rate, etc., to meet real-time transmission applications demand, the effect of improving transmission distance and transmission rate

Active Publication Date: 2021-01-19
ZHEJIANG UNIV
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Problems solved by technology

[0003] The main purpose of the present invention is to provide a high-speed underwater optical wireless communication device based on a self-adaptive distance of a photomultiplier tube to solve the problems of short communication distance, low communication rate, and limited dynamic range of detectors in related technologies.

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  • High-speed underwater optical wireless communication device based on self-adaptive distance of photomultiplier tube
  • High-speed underwater optical wireless communication device based on self-adaptive distance of photomultiplier tube
  • High-speed underwater optical wireless communication device based on self-adaptive distance of photomultiplier tube

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0022] It should be noted that the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, metho...

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Abstract

The invention discloses a high-speed underwater optical wireless communication device based on a self-adaptive distance of a photomultiplier. The underwater optical wireless communication system comprises an optical sending end and an optical receiving end, the optical sending end comprises a radio frequency signal generation module, a power amplifier, an attenuator, a bias device, a semiconductorlaser and a beam expanding system which are connected in sequence, and the bias device is further connected with a DC; and the light receiving end comprises silver halide glass, a lens, a photomultiplier, a trans-impedance amplifier and a signal post-processing module which are connected in sequence. According to the high-speed underwater optical wireless communication device based on the self-adaptive distance of the photomultiplier, the transmission rate that the communication distance of more than 100 meters is greater than 1Gbps can be realized, Meanwhile, the photomultiplier is not damaged during short-distance transmission. According to the device, the transmission distance and the transmission rate of the existing underwater optical wireless communication method are greatly improved, and the real-time transmission and application requirements of underwater large-capacity data are met.

Description

technical field [0001] The invention belongs to the technical field of underwater optical wireless communication, and in particular relates to a high-speed underwater optical wireless communication device based on an adaptive distance of a photomultiplier tube in underwater optical wireless communication. Background technique [0002] With the deepening of human activities such as marine resource exploration, oceanographic research, and marine environment monitoring, the demand for high-speed underwater communication is increasingly urgent. Compared with traditional underwater acoustic communication and underwater radio frequency communication, underwater optical wireless communication has the advantages of low energy consumption, low cost, and good concealment. Using the "low-loss window" of light in seawater - the blue-green light band, underwater optical wireless communication can support high-speed communication of hundreds of meters in the deep sea. The photodetectors ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/50H04B10/516H04B10/60H04B10/80
CPCH04B10/503H04B10/516H04B10/60H04B10/80
Inventor 费超何赛灵洪晓建
Owner ZHEJIANG UNIV
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