For example: Agilent E4440A or Anritsu 68369
Optical Power Meters
Newport 2835-C
Newport 2835-C / 2835C Dual Channel High Performance Optical Meter

Manufacturer: Newport
Keysight / Agilent 54754A
Differential & Single-ended TDR/TDT Module

Manufacturer: Keysight / Agilent
Keysight / Agilent 81633A
Agilent 81633A Optical Power Sensor Module

Manufacturer: Keysight / Agilent
Keysight / Agilent 81633B
Agilent 81633B Optical Power Sensor Module

Manufacturer: Keysight / Agilent
Keysight / Agilent 81635A
Dual Lightwave Optical Power Sensor Module

Manufacturer: Keysight / Agilent
Keysight / Agilent 8163B
HP Agilent 8163B Lightwave Multimeter Mainframe

Manufacturer: Keysight / Agilent
Keysight / Agilent 81989A
Compact Tunable Laser Source, 1465nm to 1575nm

Manufacturer: Keysight / Agilent
Keysight / Agilent 86105C
HP Agilent 86105C 9GHz Optical / 20GHz Electrical Sampling Module, 750-1650nm, SMF & MMF, 5Gb/s

Manufacturer: Keysight / Agilent
Keysight / Agilent 86105C-140-150-160-190-300
HP Agilent 86105C 9GHz Optical / 20GHz Electrical Sampling Module, 750-1650nm, SMF & MMF, 5Gb/s

Manufacturer: Keysight / Agilent
Keysight / Agilent 86105C-140-150-160-300
HP Agilent 86105C 9GHz Optical / 20GHz Electrical Sampling Module, 750-1650nm, SMF & MMF, 5Gb/s

Manufacturer: Keysight / Agilent
Keysight / Agilent 86120B
Agilent 86120B Multi-Wavelength Meter 700-1650nm

Manufacturer: Keysight / Agilent
Konica - Minolta CA-110 Analyzer
LCD Color Analyzer/CRT Convergence Meter

Manufacturer: Konica - Minolta