| 摘要 |
A system and method for maintaining a set point temperature of a laser. The required operating temperature range of laser may be reduced by determining whether to increase or decrease the amount of heating to the laser. A controller compares the desired set point temperature with a measured temperature which is provided as feedback to produce an output voltage. A heater transistor is driven by the output voltage of the controller which is proportional to the amount of heat to be generated by the transistor in order to maintain the laser at the desired set point temperature.
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