| 摘要 |
A wavelength converting method of a wavelength tunable light source that is performing a phase modulation for a light output is disclosed. The wavelength converting method has an amplitude of a phase modulation have an amplitude value that is temporarily greater during a wavelength conversion than a phase modulation amount during non conversion. Therefore, an erroneous lock resulting from an abnormal oscillation wavelength can be prevented without spending the cost or time.
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