| CPC H04Q 11/0067 (2013.01) [H04J 14/0212 (2013.01)] | 20 Claims |
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1. An optical distribution network, comprising:
N levels of splitters, wherein each level of the N levels of splitters comprises at least one splitter, each splitter of the at least one splitter of each level comprises at least two output ports;
M first optical filters, wherein each output port of the at least two output ports of each splitter corresponds to at least one first optical filter, different output ports correspond to different first optical filters, and center wavelengths of detection light that the different first optical filters allow to pass through or do not allow to pass through are different; and
K first power change assemblies, wherein N, M, and K are all positive integers, each output port of each splitter in an Nth-level splitter further corresponds to a respective first power change assembly, each first power change assembly is configured to change a power of first service light from an optical line terminal based on received first detection light, and the Nth-level splitter is one of the N levels of splitters that is configured to connect to an optical network terminal; and
wherein each first power change assembly being configured to change the power of first service light from the optical line terminal based on the received first detection light comprises each first power change assembly being configured to:
when both the first detection light and the first service light are transmitted to the respective gain assembly, amplify the first service light and output amplified first service light; and
when only the first service light is transmitted to the gain respective assembly, not generate any gain for the first service light and output the first service light.
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