Laser optical shutter

Abstract

The invention discloses a laser optical shutter, and belongs to the technical field of communication. The system comprises a sending end and a receiving end, the sending end comprises a sending end circuit board and a light emitting module, and the receiving end comprises a receiving end circuit board and a light sensing module; the sending end circuit board comprises a sending end network transformation module, a sending end signal conversion module, a driving module and a laser which are sequentially connected, and the light emitting module and the laser are coaxially fixed; the receiving end circuit board comprises a detector, an amplification module, a receiving end signal conversion module and a receiving end network transformation module which are connected in sequence, and the photosensitive module and the detector are coaxially fixed. According to the invention, the requirements of physical isolation between networks and one-way non-feedback transmission of data can be met, and the system has good anti-magnetic interference and anti-interception capabilities.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a laser shutter. Background technique [0002] With the advancement of informatization construction, the government, military, financial institutions, enterprises and other institutional facilities have an increasing demand for the secure transmission of confidential information. The main demand scenario is data import from the external network to the internal network, and from the non-classified network to the classified network . According to the national network level protection standards and actual application requirements, in the data import scenarios mentioned above, only data is allowed to flow from the low security level network to the high security level network, that is, the low security level network only has write access to the high security level network There is no read permission. The high security level network has only read permission but no write permissi...

AI Technical Summary

Problems solved by technology

The network gatekeeper introduces intermediate equipment on the basis of the traditional electrical connection network, and realizes one-way transmission by setting filtering rules. Because the electrical connection has a bidirectional conduction characteristic, the network gatekeeper inevitably has the risk of data leakage; In this way, the external network information is dumped on the CD-ROM and imported into the internal network, which is cumbersome and inefficient; the optical fiber shutter adopts optical splitting technology, and realizes the self-checking of the transmitting end and the mutual checking of multiple receiving ends through the signal splitting and multiplexing. The one-way and accurate transmission of data, so the cable connection is complicated and complicated, the power consumption of the equipment is relatively large, and the mobility is poor

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