| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-contained calibration method for improving the stability of a light source in an optical network testing apparatus.SOLUTION: A tracking error adjustment program includes the steps of performing a temperature sweeping test of a light source (402), periodically measuring the power of the light source to output light (404), generating a temperature correction value on the basis of the measured light output power (408), and supplying the temperature correction value so that the power of the light source to output light becomes substantially constant to adjust the power of the light source to output light (412). |
