Keysight / Agilent 83438A Erbium ASE Source
  • Agilent_83438A_NIB_View2
  • Agilent_83438A_NIB_View1

Keysight / Agilent 83438A Erbium ASE Source

• Options: 009 (built-in polarizer, FC/PC).

An Artisan Technology Group technician measured this total output power: +2.66 dBm

Click here for output spectrum viewed with an Anritsu OSA.

This instrument includes the standard Agilent optical interface (View Photo). The Agilent 81000xI Series optical interface connectors are sold separately. They are available for purchase from our website here: (Item #50516).

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CE labeled RoHS Compliant
We typically stock RoHS compliant / CE marked equipment for this Keysight / Agilent 83438A.
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Stock # 44042-6
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Keysight / Agilent 83438A High-Power Erbium ASE Source

  • Between: 5.5 and 8.1 dBm in the 1550 nm Window (Standard Model)
  • High Power Density
  • Single-Mode Fiber Output
  • Modulation Input from DC up to 300 Hz


The Keysight / Agilent 83438A provides more than +6 dBm in the 1550 nm window, allowing you to characterize advanced components such as isolators, circulators, add/drop multiplexers, gratings, or demultiplexers for dense wavelength-division multiplexing (DWDM) systems.

The Keysight / Agilent 83438A Erbium ASE source emits amplified spontaneous emission (ASE) from an Erbium doped fiber. Such light is one hundred times stronger than an EELED, and ten thousand times stronger than a white light source. This makes it an ideal source for characterizing components with high losses (such as crosstalk or isolation). A pump laser activates the fluorescence of the Erbium doped fiber. The modulation input allows on/off control or modulation up to 300 Hz for applications using lock-in techniques. An optical isolator (standard in each instrument) protects the active fiber from backreflections from the device under test, which significantly improves the stability.

The performance of most passive optical components depends on wavelength, either within several nanometers or over a few hundred nanometers. If that is a critical parameter in the application of your component, then the Keysight / Agilent 83438A is the perfect stimulus to probe the device under test and to characterize its wavelength dependence quickly with an optical spectrum analyzer.

Product Family: 83438A, 83438 A, 83438-A

Important Notice: Please note that any additional items included with this equipment such as accessories, manuals, cables, calibration data, software, etc. are specifically listed in the above stock item description and/or displayed in the photos of the equipment. Please contact one of our Customer Support Specialists if you have any questions about what is included with this equipment or if you require any additional information.

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Compatible Fiber9/125 µm, Single-Mode
Total Output PowerMin. +5.5 dBm, Max. +8.1 dBm
Power Stability<±0.02 dB (15 min), <±0.05 dB (6 h)
ModulationDigital (TTL input), DC to 300 Hz
Dimensions4.0 x 8.4 x 17.7 in.
Power90 to 132 V or 198 to 264 V AC, 47 to 63 Hz, 50 W

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Keysight / Agilent 83438A High-Power Erbium ASE SourceKeysight / Agilent 83438A High-Power Erbium ASE SourceKeysight / Agilent 83438A High-Power Erbium ASE Source
Keysight / Agilent 83438A High-Power Erbium ASE Source

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