Optical one-way transmission path

Abstract

The invention discloses an optical one-way transmission path, which comprises two optical network cards; one card is used as an emitting card, and the other card is used as a receiving card; the emitting card is provided with an emitting end and a receiving end; the data transmission of the emitting card is started by light with rated wavelength received by the receiving end of the emitting card; the optical one-way transmission path is provided with an optical splitter; the light emitted by the emitting card is used as the incident light of the optical splitter; the optical splitter comprises two paths of incident light; one path of light is received by the receiving card and the other path of light is received by the receiving end of the emitting card; the optical one-way transmission path does not need to additionally design and manufacture nonstandard optical network cards, but adopts existing optical network cards; moreover, the optical one-way transmission path does not need to be provided with an optical source with rated wavelength; in addition, as the receiving end of the emitting card receives the light with rated wavelength emitted by the emitting card, debugging is not needed; therefore, one-way transmission of optical fibers is realized with a low cost. The invention is suitable for network isolation and other occasions requiring one-way data transmission.

Description

technical field [0001] The invention relates to an optical fiber unidirectional transmission path. Background technique [0002] The optical fiber transmission path built with two existing optical network cards is as follows: figure 1 , the optical network cards at both ends have a transmitting end and a receiving end, the light emitted by the transmitting end of optical network card A is received by the receiving end of optical network card B, and the light emitted by the transmitting end of optical network card B is received by the receiving end of optical network card A, thus Constitute the existing optical fiber bidirectional transmission path. [0003] In the case of restricting the transmission direction, it is necessary to build a one-way transmission path. It is required that only one-way transmission is allowed in this path, and reverse transmission is prohibited. This kind of occasion is considered to be unsuitable to adopt the optical network card to realize, an...

AI Technical Summary

Problems solved by technology

In the case where only one-way transmission is allowed, since the receiving end of the transmitting optical network card (called the transmitting card) is not allowed to receive the signal from the receiving optical network card (called the receiving card), the transmitting card cannot complete the initialization. There are two solutions. One is to design and manufacture a non-standard optical network card, which will greatly increase the construction cost; the other is to provide a light source with a rated wavelength to the receiving end of the transmitting card for the transmitting card to complete initialization. Additional construction costs will be added and a complex debugging process will be required

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