Fiber Optic Receiver by FEMTO

Note: Your Quotation Request will be directed to FEMTO.

The FWPR-20-SI from FEMTO is a Femotwatt Photoreceiver that operates from 320 to 1100 nm. It has been designed by combining a Si PIN photodiode with a trans-impedance amplifier. The trans-impedance amplifier provides a high gain of up to 10^12 V/A and has a very low noise of 0.7 fW/Hz. The photoreceiver can be used for direct detection of optical power up to 50 Femtowatt (fW) and has high sensitivity. It requires a DC supply of 15 V and consumes up to 15 mA of current. The photoreceiver offers high quantum efficiency in visible and near-infrared regions. Due to its high sensitivity, it can replace APD (avalanche photodiodes), photomultiplier tubes (PMT), and liquid nitrogen cooled germanium photodiodes in applications where cooling and high power supply are not available.

The FWPR-20-SI is available in a nickel-plated module that measures 84.0 x 51.0 27.3 mm with BNC Female connectors. It is ideal for fluorescence measurements, spectroscopy, electrophoresis, and chromatography applications.

Product Specifications

Product Details

  • Part Number
  • Manufacturer
  • Description
    320 to 1100 nm Femotwatt Photoreceiver with an Si PIN Photodiode


  • Applications
    Fluorescence measurements, Spectroscopy, Electrophoresis, Replacement for photomultiplier tubes (PMTs) and avalanche photodiodes (APDs)

Connections & Interface

  • RF Connector
    BNC (Female)

General Parameters

  • Input Power Level
    10 mW
  • Package Type
    Flange Mount
  • Photodiode Semiconductor
  • Photodiode Type
    PIN Photodiode
  • Optical Power
    18 pW
  • Wavelength Range
    320 to 1100 nm
  • Supply Voltage
    15 V
  • Supply Current
    15 mA
  • Bandwidith
    DC to 20 Hz
  • Output Impedance
    50 Ohms
  • Note
    Rise / fall time: 18 ms, Active Area: 1.1 x 1.1 mm, NEP: 0.7 fW/vHz


  • Operating Temperature display
    0 to 60 Degree C
  • Storage Temperature
    -40 to 100 Degree C

Physical Properties

  • Weight
    190 g

Technical Documents

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