Wave divided multiplexing line dural fibre optical multiplexing section protecting apparatus
A technology of multiplexing section protection and wavelength division multiplexing, which is applied in wavelength division multiplexing systems, selection devices, coupling of optical waveguides, etc. The method is simple and reliable, and the effect of increasing the capacity
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[0024] Such as figure 2 As shown, the optical transmission signal is input through the optical transmission port I1 of the device of the present invention, and the optical splitter 21 divides the optical transmission signal into an optical transmission working signal a and an optical transmission protection signal b, and the optical transmission working signal a passes through the optical interface unit 25 and the working signal b. The optical fiber port I3 is loaded to the working optical fiber, and the optical interface unit 25 sends the optical receiving protection signal d on the working optical fiber from the working optical fiber port I3 to another input port of the optical switch 22; the optical transmission protection signal b passes through the optical interface unit 26 And the working fiber port I2 is loaded to another working fiber, and the optical interface unit 26 sends the light-receiving working signal c on the other working fiber from the working fiber port I2 ...
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