Laser driver circuit for burst mode transmission and fabrication method thereof

A laser transmitting apparatus for a burst mode application, the laser transmitting apparatus comprising:

• a first bias adjustment circuit for receiving a temperature compensation signal to generate a modulation current setting signal;
• a second bias adjustment circuit for receiving the temperature compensation signal to generate a bias current setting signal;
• and
• a laser driver circuit connected to the first bias adjustment circuit and the second bias adjustment circuit, the laser driver circuit for providing a driving current to a laser diode to generate a laser light, the laser driver circuit generating the temperature compensation signal in response to the environmental temperature, the laser driver circuit receiving the modulation current setting signal to set a modulation current, the laser driver circuit receiving the bias current setting signal to set a bias current;
• wherein the relationship between the temperature compensation signal and the temperature is directly proportional, and the laser driver circuit substantially stably maintains the high level and the low level of the eye diagram of the laser power according to the bias current and the modulation current.

A laser transmitting apparatus for continuous mode applications, the laser transmitting apparatus comprising:

• a laser driver circuit for providing a driving current to a laser diode to generate a laser light, the laser driver circuit receiving a modulation current setting signal to set a modulation current, the laser driver circuit receiving a bias current setting signal to set a bias current;
• and
• a temperature sensitive circuit connected to the laser driver circuit, the temperature sensitive circuit generating the modulation current setting signal and the bias current setting signal, both of which have directly proportional relationships with the temperature;
• wherein the laser driver circuit substantially stably maintains the high level and the low level of the eye diagram of the laser diode according to the bias current and the modulation current.

A laser transmitting apparatus for burst mode applications, the laser transmitting apparatus comprising:

• a first bias adjustment circuit for receiving a temperature compensation signal to generate a reference current setting signal;
• a second bias adjustment circuit for generating a bias current setting signal;
• a laser driver circuit connected to the first bias adjustment circuit and the second bias adjustment circuit, wherein the laser driver is used to provide a driving current to a laser diode to generate a laser light, the laser driver circuit generates the temperature compensation signal according to environmental temperature, the laser driver circuit receives the reference current setting signal to set a reference current, and the laser driver circuit receives the bias current setting signal to set a bias current;
• wherein the relationship between the temperature compensation signal and the temperature is inversely proportional, the laser driver circuit stably maintains the high level and the low level of the eye diagram of the laser diode in response to the bias current and the reference current.