| 摘要 |
The present invention discloses an optical transmitter that enables a prompt stopping and restarting of an optical output power thereof. The transmitter includes a laser diode, a driver, an output monitor, and a controller. These constitute an auto-power-control (APC) loop. The APC loop of the present invention further includes a switch that supplies the output of the controller in an ordinary state. When receiving a shutting down command, the switch supplies a signal to stop the optical output of the LD, while the controller maintains the output thereof corresponding to a value which the APC loop is to be set when the shutting down command is negated.
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