Multi-path switching value parallel transmission system and method based on optical fibers

The invention discloses a multi-path switching value parallel transmission system and method based on optical fibers. The transmission system comprises a sending unit, a distribution unit and M receiving units. The transmitting unit comprises n optical transmitters, each optical transmitter corresponds to one signal source, and the n optical transmitters transmit laser signals with different frequencies, which are transmitted by each signal source, into one optical fiber coupler through optical fibers connected with the n optical transmitters for coupling; wherein the optical fiber coupler inthe sending unit is in communication connection with the optical fiber coupler in the distribution unit through an optical fiber, the distribution unit distributes laser signals to different receivingunits through the optical fiber coupler, and each receiving unit comprises the laser signals sent by each signal source; the receiving unit comprises an optical wavelength division multiplexer, and the optical wavelength division multiplexer is in communication connection with the n photoelectric switches through n optical fibers. According to the transmission system, the problems of relay fault,signal transmission interference and incapability of self-checking caused by controlling the switching value through a relay in the prior art are solved.