Design method of DFB seed source circuit with stable wavelength and stable power

The invention discloses a design method of a DFB seed source circuit with stable wavelength and stable power, and relates to the technical field of DFB seed source circuits. The method comprises the following steps: step 1, controlling the stability of the current of a pumping source through a const...

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Bibliographic Details
Main Author YE ZONGXIAN
Format Patent
LanguageChinese
English
Published 27.05.2022
Subjects
BASIC ELECTRIC ELEMENTS
DEVICES USING STIMULATED EMISSION
ELECTRICITY
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Summary:The invention discloses a design method of a DFB seed source circuit with stable wavelength and stable power, and relates to the technical field of DFB seed source circuits. The method comprises the following steps: step 1, controlling the stability of the current of a pumping source through a constant current control circuit; 2, collecting the power of a pumping source circuit through a PD; and step 3, controlling the temperature of the pumping source through a constant temperature control circuit. Accurate direct-current voltage is obtained through connection of the DC/DC circuit, the obtained voltage provides a power source for the DFB pumping source, and direct-current voltage is obtained through the LDO linear voltage stabilizing circuit and used for supplying power to active devices such as a high-precision operational amplifier and the like by the voltage 24V externally provided. And the high-precision operational amplifier, the MOSFET tube and the high-precision sampling resistor are combined to form
Bibliography:Application Number: CN202210166705