For example: Agilent E4440A or Anritsu 68369
Keysight / Agilent Optical Sources
Keysight / Agilent 81552SM
1310nm Fabry Perot Laser Source, Single-Mode
Manufacturer: Keysight / Agilent
Keysight / Agilent 81553SM
1550nm Fabry Perot Laser Source, Single-Mode
Manufacturer: Keysight / Agilent
Keysight / Agilent 81654A
Dual Fabry-Perot Laser Source, 1310nm & 1550nm
Manufacturer: Keysight / Agilent
Keysight / Agilent 81656A
Fabry-Perot Laser Source, 1550nm, 13dBm (20mW)
Manufacturer: Keysight / Agilent
Keysight / Agilent 81657A
Dual Fabry-Perot Laser Source, 1310nm & 1550nm, >13dBm (20mW)
Manufacturer: Keysight / Agilent