Patent ID: 6643301
Filing Date: 2003-11-04
Classification: H01S

Abstract:
A control device for at least one laser diode, comprising:a bias direct current source connected to the laser diode and providing a bias direct current to the laser diode; a modulator for modulating a signal current for the laser diode in accordance with a data signal received by said modulator; a temperature compensation device switchably connected to said modulator for controlling the signal current as a function of temperature changes; a pilot tone control device for controlling the signal current by modulating a pilot tone frequency onto the signal current; and a first switching device for switching between a first state and a second state; in said first state, said pilot tone control device being connected to said modulator and said bias direct current source for regulating the signal current using said pilot tone control device; and in said second state, said modulator being connected to said temperature compensation device causing said temperature compensation device to control the signal current.