The controller of the laser driver for safe operation of the optical transmitter which is based on the laser diode

摘要

Method in order to control the operation of the laser driver in order to restrict the emission level of the laser diode which outputs the monitor photo electric current where each differs, the device and the system are disclosed. With 1 execution examples, as for the controller of the laser driver simultaneously, average power of emission level is regulated in power level of goal, at the same time, as generated the monitor output power reference level in order to decide whether output power of emission level has not exceeded the output power limit, the control signal generator which is formed is included. The control signal generator, monitor output power reference level becoming independent in adjustment of average power, when it is adjusted compared to, can restrict emission level more accurately.