1. Adjustment of optical power: In optical fiber communication systems, it is sometimes necessary to adjust the power of optical signals to ensure that the transmission of signals between different devices matches. For example, when the power output of the optical transmitter is too high, it may cause damage to the receiving device, and the optical power can be reduced to an appropriate level using a fiber optic attenuator.
2. System test: During the installation, commissioning, and maintenance of the optical fiber communication system, the optical power must be accurately measured and adjusted. Fiber optic attenuators can simulate different transmission distances and losses to help engineers test system performance and reliability.