Used JDSU MRED14C5003-1 30micro watt Laser Diode. 14 Pin Cooled, 1550nm.

Features:
• 1550 nm Wavelength
  • High Optical Power • Low Operating Current
  •  High Operating Temperature
  • Low Modal Noise
  • 14 Pin Dual Inline Package with Thermal Electric Cooled
Applications
  • For Singlemode or Multimode Applications