This paper introduces the all-optical communication network, and focuses on the analysis of a new optical switch technology, and looks forward to the development prospects of optical switch technology. Keywords: optical communication; optical switch; optical mode detection; OADM; OXC. In the current optical fiber communication system, the network transmission adopts the optical-electrical-optical (0E0) mode, that is, the optical signal is first converted into an electrical signal, and then restored to an optical signal after transmission. This cannot give full play to the advantages of optical fiber communication such as extremely wide bandwidth, anti-electromagnetic interference, strong confidentiality, and low transmission loss, and leads to expensive system costs. In theory, if the component can allow the optical signal to move forward and turn in the path intact, then the information can be processed at the speed of light. However, after being converted into an electrical signal, the direction of the signal is changed by the semiconductor circuit, so that the communication speed cannot exceed the semiconductor in any case. Market analysis shows that the use of new optical network system technology such as all-optical switches can save about 70% of the cost, and at the same time, a large amount of data, sound and video signals can be transmitted at high speed, greatly improving the communication capacity of the network system. With the development of information networks, optical switch technology has become the key to network relay devices.
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