Fiber splitter split ratio

The splitting ratio is defined as the ratio of the output power of each output port of the fiber splitter. In the system application, the splitting ratio is indeed based on the optical power required by the actual system optical node to determine the appropriate splitting ratio (except for the average distribution), The splitting ratio of the optical fiber splitter is related to the wavelength of the transmitted light. For example, when an optical splitter transmits light of 1.31 μm, the splitting ratio of the two output ends is 50:50; when transmitting light of 1.5 μm, it becomes 70: 30 (the reason for this is that the fiber splitter has a certain bandwidth, that is, the frequency bandwidth of the transmitted optical signal when the splitting ratio is basically unchanged). So be sure to indicate the wavelength when ordering the fiber splitter.