In this paper, laser communication is used for high-speed signal transmission in satellite cabin. The interconnectionmode of information flow is introduced firstly. Then the laser communication device in the satellite cabin is designed,and tested on orbit, which include laser communication and fiber communication technology. It realizes 100Mbpswireless laser communication and 1Gbps fiber communication. The test results show that the bit error rate of lasercommunication reaches 10~(-10) and the bit error rate of fiber communication reaches 10-~(12), which is superior to the similarproducts. The adaptability of space environment and ISI problem are solved effectively. It has laid a good foundationfor the realization of No-cable signal transmission in spacecraft.
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