For example: Agilent E4440A or Anritsu 68369
ILX Lightwave Optical Sources
ILX Lightwave 505B
Laser Diode Driver, 200/500 mA, 7 VDC Compliance, USB
Manufacturer: ILX Lightwave
ILX Lightwave 525B
Laser Diode Driver, 1000/2500 mA, 7 VDC Compliance, USB
Manufacturer: ILX Lightwave
ILX Lightwave 560B
Laser Diode Driver, 3000/6000 mA, 5 VDC Compliance, USB
Manufacturer: ILX Lightwave