Patent ID: 9297694
Filing Date: 2016-03-29
CPC Classification: G01J,H03M,H04B

Claim Text:
1. A correction device of a light reception power monitor of an optical module, the correction device comprising: a storage unit storing a correction table that is referred to when correcting a measured value of light reception power of signal light and stores a plurality of correction values in advance on the basis of a correlation between a plurality of reference values and a plurality of actual values; and a signal processing unit reading, when an input value indicating the measured value of the light reception power of the signal light matches a reference value in the correction table, a correction value correlated with the reference value from the correction table, and calculating, when the input value does not match any reference values in the correction table, a correction value in accordance with a predetermined calculation formula on the basis of the input value, wherein the plurality of correction values are stored in the correction table in such a manner that an interval between the plurality of reference values is smaller for a segment in which a change in the actual values is small relative to a change in the reference values than for a segment in which the change in the actual values is large relative to the change in the reference values.