Superluminescent Diode by Anritsu Corporation

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The AS5B320EM50M from Anritsu Corporation is a Super Luminescent Diode (SLD) Module that operates at a wavelength of 1550 nm. It provides an optical output power of 25 mW and has optical isolation of 30 dB. This SLD module has a built-in optical isolator, monitor PD and TEC. It has a forward voltage of 24 V with a monitor current of 400-2000 μA and PD dark current of 0.1 μA. This SLD emits incoherent light with a spectral half width of 10-50 nm from a PFM (polarization-maintaining fiber). It is available in a butterfly package that measures 30 x 12.7 x 7.8 mm and is ideal for optical fiber sensor, Optical Coherence Tomography (OCT) and optical measurement applications.

Product Specifications

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Product Details

  • Part Number
  • Manufacturer
    Anritsu Corporation
  • Description
    1550 nm Super Luminescent Diode (SLD) Module

Fiber Parameters

  • Fiber Mode
    Polarization Maintaining

General Parameters

  • Type
    Fiber-Coupled SLED
  • Wavelength
    1530 nm, 1550 nm, 1570 nm
  • Output Power
    20 to 25 mW
  • Bandwidth (FWHM)
    50 to 55 nm
  • Forward Voltage
    2.4 V
  • Package Type
  • Forward Current
    600 mA
  • Center Wavelength
    1550 nm
  • Operation Mode
    CW Laser
  • PD Monitor Current
    400 to 2000 µA
  • Photo Diode Dark Current
    0.1 µA
  • Reverse Voltage
    2 V
  • Reverse Voltage(PD)
    10 V
  • Spectral Ripple
    0.6 dB
  • TEC Current
    1.2 A
  • TEC Voltage
    3.5 V
  • Thermistor Resistance
    9.5 to 10.5 kOhms
  • Note
    Tracking Error: 0.5 dB, Optical Isolation: 30 dB


  • Operating Temperature display
    -20 to 75 Degree C
  • Storage Temperature
    -40 to 85 Degree C


  • Application
    Optical Fiber Sensor, Optical Coherence Tomography (OCT), Optical Measurement

Technical Documents

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