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Optical Power Monitor OPM200

The optical power meter OPM200 is designed for precise, high speed measurement of optical power in the μW to mW range. The output is a voltage linearly proportional to the input power. The gain of the OPM200 is fixed.

  • Interfaces: DB9 (analogue outputs)
  • Rise time: 35ns (10MHz)
  • Noise equivalent power: 1 µW (RMS)
  • Gain control: none
The OPM200 amplifier employs high quality photodiodes and precision transimpedance input stages to provide for low offset and high linearity throughout the full dynamic range.


These optical power monitors are particularly useful for the measurement of rapidly changing optical signals. These units have a particularly high bandwidth of 10MHz allowing monitoring of high frequency noise components of many light sources. The output is a voltage linearly proportional to input power. The fast response time at high signal-noise-ratio makes the OPM200 series particularly useful in systems control feedback loops. The OPM200 series is insensitive to electromagnetic interference by design, an important factor when working in “dirty” industrial environments. These units are provided in OEM-style enclosures. The case wings provide for mounting on standard 25mm and 1″ optical table tops and for OEM applications.
ParameterConditionsSi, InGaAsGeUnits
Wavelength rangeUV-Si
200 – 950
400 – 1600
500 – 2000
800 – 2200
800 – 1600nm
Power ranges (full scale)4.51452 mW
Noise equivalent power (NEPRMS )0.3 (max)3 (max)µW
Polarization Dependant Loss (PDL)0.10.1dB
Fibre Typesingle mode, multi mode
(Ø core ≤ 62.5µm; NA ≤ 0.275)
single mode, multi mode
(Ø core ≤ 62.5µm; NA ≤ 0.275)
ReceptaclesFC, SMA, free beamFC, SMA, free beam
FunctionLinear analogue : Vout = scale faktor x IinLinear analogue : Vout = scale faktor x Iin
Output scale10.1V/mW
Output range (full scale)4.4 – 4.63V
ConnectorsBNC4 and DB9BNC4 and DB9
Rise / Fall time (10% – 90%)35 (max)35 (max)ns
Setting time (1%)100 (max)100 (max)ns
Accuracy± 5 (min)± 5 (min)%
Reproducibility± 0.5 (min)± 0.5 (min)%
Linearity± 0.1 (typ)
± 0.2 (max)
± 0.1 (typ)
± 0.2 (max)
Output impedance50 (max)50 (max)Ω
Power supply
Typewall plug (supplied)wall plug (supplied)
Dimensions30 x 50 x 6030 x 50 x 60mm
1 channel1055 x 45 x 116 (w x h x l)1055 x 45 x 116 (w x h x l)mm
2 channels1055 x 66 x 116 (w x h x l)1055 x 66 x 116 (w x h x l)mm
4 channels1055 x 106 x 116 (w x h x l)1055 x 106 x 116 (w x h x l)mm

1 Linearity guaranteed to 1 mW (0 dBm).
2 Linearity guaranteed to 30 mW (15 dBm).
3 Linearity guaranteed to 1 mW (0dBm).
4 Adapters for other connector systems available.
5 130 mm including case wings.

  • Detector: UV-Si, Ge, visible enhanced InGaAs, IR extended-InGaAs
  • Input receptacle: FC-receptacle, SMA-receptacle, free beam
  • Case: gull wing, lab style
  • Number of channels: 1, 2, 3, 4

Artifex Software Development Kit

The SDK is a fixed, free component when purchasing a device.

It comes with the source code of the application program (in and a LabView VI with the basic functions of the instrument. A description of the communication with the devices and a list of the commands used is also included.

For some devices (currently LDD100, LIV120 in preparation) there is a dll file (library file) with documentation and exemplary applications in and LabView.

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Rolf Jaspers


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