For example: Agilent E4440A or Anritsu 68369
Precision Rated Optics Optical Sources
Precision Rated Optics LS-201Q
Light Source, 850/1300/1310/1550 Output Wavelength
Manufacturer: Precision Rated Optics
Precision Rated Optics LS-201T
Light Source, 1310/1490/1550 Output Wavelength
Manufacturer: Precision Rated Optics
Precision Rated Optics LS-202D
Light Source, 1310/1550 Output Wavelength
Manufacturer: Precision Rated Optics
Precision Rated Optics LS-202T
Light Source, 1310/1550/1625 Output Wavelength
Manufacturer: Precision Rated Optics