Current gain control system

A current gain control system for a laser diode, comprising:

• five filters respectively coupled to five input channels, wherein one filter is associated with one input channel;
• five channel gain devices respectively coupled to the five filters, wherein one channel gain device is associated with one filter;
• and
• five switches for selectively coupling the channel gain devices to five channel drivers, wherein one channel gain device is associated with one channel driver and each channel driver allows control of a gain for the associated input channel,
• wherein the current gain control system produces varying power levels in response to receiving a plurality of pulses.

An optical disk drive system, comprising:

• a controller monitoring an output power lever of laser diode and transmitting adjustment signals for varying the output power level;
• a driver operatively coupled to the controller for receiving the adjustment signals, the laser driver having a current gain control system for independently altering gains associated with first and second input channels, comprising:
• first and second gain blocks respectively associated with the first and second input channels, wherein the first and second gain blocks transmit first and second gain signals in response to receiving first and second input signals;
• first and second converters adapted to be respectively coupled to the first and second gain blocks, the first and second converters operative for setting gains associated with the first and second input channel and for transmitting first and second converted signals in response to receiving the first and second gain signals;
• and
• first and second switches for selectively coupling the first and second converters to first and second channel drivers, respectively,
• wherein the first and second channel drivers transmit channel gain signals in response to receiving the first converted signal, and the channel gain signal allows control of the gain associated with the input channel, and controlling the gain for each channel enables varying power levels associated with each channel.