High-power underwater wireless optical communication transmitter

A wireless optical communication, high-power technology, applied in electromagnetic transmitters, electromagnetic wave transmission systems, electrical components, etc., can solve the problems of large divergence angle of light source and narrow beam, achieve modulation rate, prolong lamp wick life, and ensure electro-optical conversion. The effect of efficiency

Inactive Publication Date: 2020-02-18
中国船舶重工集团公司第七0五研究所
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Problems solved by technology

The LD system uses high-speed LD (laser diode) as the light source, and the communication rate is fast, generally above 100Mbps, but due to the narrow beam, a precise servo alignment device is required to communicate reliably; the LED system uses high-power LED (light-emitting diode) as the light source , the rate is generally within 10Mbps, but the divergence angle of the light source is large, the coverage is wide, no alignment is required, and it is easy to use

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  • High-power underwater wireless optical communication transmitter

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Schematic diagram of underwater wireless optical transmitter figure 1 shown. A high-power underwater wireless optical communication transmitter, the optical antenna adopts a short focal length single convex lens, the optical antenna is fixed on the watertight casing through a snap ring, and the snap ring adopts a threaded structure to move back and forth in the axial direction of the watertight casing, thereby Realize the adjustment of the focus of the optical antenna and control the divergence angle of the beam. The LED device uses a high-power single-bead blue LED module. Compared with the low-power LED array method, the light-emitting area is small, and it is easier to control the beam divergence angle. The substrate of the LED device is installed on a fixed structural member, and heat conduction is applied between the substrate and the fixed...

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Abstract

The invention provides a high-power underwater wireless optical communication transmitter. A watertight connector supplies power to a modulation circuit, an array driver and an LED device, meanwhile,the watertight connector is responsible for external communication, and after modulation of the modulation circuit, voltage provides drive for the LED device through the parallel array driver, so thatthe LED device emits light, light is transmitted through the optical antenna, and underwater wireless transmission is achieved. According to the invention, the shell and seawater are used for rapid heat dissipation; the focus is controlled at the LED lamp wick, the optical divergence angle is compressed, the light energy is gathered, the light beam expansion loss is reduced, the peak power is improved on the premise that the average power is not changed, longer-distance transmission is achieved, the transmitting light power can be further improved on the premise that the modulation rate is guaranteed, and longer-distance underwater wireless transmission is achieved.

Description

technical field [0001] The invention relates to the field of underwater wireless optical communication, in particular to a communication optical transmitter. Background technique [0002] Underwater wireless optical communication uses light waves as the information carrier to realize wireless transmission of underwater information. In order to increase the transmission distance, blue-green light with low seawater loss is generally used as the light source. Lossless radio communication, which can achieve extremely high-speed underwater wireless communication within a medium communication distance, is currently attracting high attention in the civilian and military fields. [0003] Underwater wireless optical communication is divided according to the light source used, mainly including LED wireless optical communication system and LD wireless optical communication system. The LD system uses high-speed LD (laser diode) as the light source, and the communication rate is fast, g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/50H04B10/524H04B10/548
CPCH04B10/502H04B10/524H04B10/548
Inventor 朱云周高卓王晓波赵培东孙铁绳姬雪峰
Owner 中国船舶重工集团公司第七0五研究所
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