METHOD FOR CONTROLLING VARIABLE WAVELENGTH LASER, AND VARIABLE WAVELENGTH LASER DEVICE
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United States of America Patent
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Issued Date -
Aug 6, 2015
app pub date -
Jan 30, 2015
filing date -
Jan 31, 2014
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Abstract
A method for controlling a variable wavelength laser comprises: acquiring information indicating a value of a second wavelength different from a first wavelength, information indicating a wavelength difference with respect to the first wavelength, and a first control value defining wavelength characteristics of an etalon and a first target setting value for the etalon; a second step of selecting the following calculations based on the wavelength difference, the first target setting value and the first control value: calculation of a second target setting value for the etalon; calculation of a second control value defining wavelength characteristics of the etalon; and calculation of the both values; and setting, as the second target setting value, a control target value of a wavelength detection result obtained by a wavelength detecting section, and controlling a wavelength of the variable wavelength laser, if the calculation of the second target setting value is carried out.
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