You don't have to weld all the optical cables.

Yes, but the following conditions must be met:

1. Point-to-point straight-through connection: When two devices to be connected are close and only need point-to-point straight-through connection, optical fiber connectors can be directly used to plug the optical cables at both ends into the device interface without welding.

2. Use the optical fiber distribution frame: When multiple optical cables need to be connected, you can use the optical fiber distribution frame and insert the optical cables into the interface of the distribution frame through connectors to realize the connection. This method is convenient and quick without welding.

3. Use prefabricated optical cable: Prefabricated optical cable is a kind of optical cable that is welded and connected in advance in the factory. Users only need to install it at the designated location without welding. This method is suitable for long-distance connection, and can also reduce the workload and risk of field welding.