In-line Optical Power Monitor (Straight Version)

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(All fiber types, 0.5 to 2.5mm)

Agiltron’s ILPM Series Fiber Optic Tap Power Monitors are used for in line power measurement and precision power controlling. It is based on a patent pending design that taps light without bending and grooving fiber, or using lens and optical coating. This novel power monitor provides industrial exceptional performance in ultra-low loss, low polarization and wavelength dependence, high directivity, variable tap ratios, as well as low cost and high reliability.  The continuous fiber device is particularly suited for adapting to various types of fiber and for high power handling. This power monitor has a miniature ceramic package houses offering a stable optical tap and PIN photodiode as well as GR1209 and GR1201 compliance qualification.

  • Low insertion loss
  • Ultra low return loss
  • Flat broadband response
  • Low PDL
  • High directivity
  • High reliability
  • ASE light sources
  • EDFA gain modules
  • Raman amplifiers
  • Optical channel monitoring
  • Optical fiber test instruments
Tap Power MonitorMinTypicalMax Unit
 Operation Wavelength300 -2000         nm
 Responsivity[1]52060  mA/W
 Polarization Stability[2]
 Insertion Loss0.10.20.4dB
 Polarization Dependent Loss[3]0.01dB
Extinction Ratio[4]23dB
Return Loss55dB
Max Optical Power      500mW
Dark Current@-5V, 23C1nA
3dB bandwidth@-5V bias102002000MHz
Max. Forward Current10mA
Max. Reverse Current5mA
Max. Reverse Voltage10V
Operating Temperature-575oC
Storage Temperature-4085oC
Package Dimension16x3x3.3mm



  1. It is tap ratio depended.
  2. PDR, responsivity variation with polarization.
  3. PDL for polarization independent version.
  4. ER for polarization maintaining version.
  5. The responsivity ratio between forward and backward directed light.



P/N: N/A