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Discover the iOLM: Your Fiber Test Expert
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Intelligent Optical Link Mapper — iOLM


Using automated multipulse acquisitions and advanced algorithms, the iOLM is an OTDR-based application that delivers detailed information on every element on the link, in a single-button operation—providing maximum intelligence and simplicity for expert-level link characterization.

Technical Information

Download spec sheetlogo, iOLM Ready


Key Features

  • Self-setting unit
  • Link-Aware technology
  • Optical Link View
  • Prompt diagnosis
  • Consolidated bidirectional link view (patent-pending)
  • OTDR trace file generation (.sor)


  • Point-to-point access
  • FTTx Last-Mile
  • LAN/WAN, enterprise and data centers
  • Mobile backhaul (FTTA/DAS)
  • Metro core and long-haul
  • CWDM
  • Cable testing (IL/ORL measurement)

iOLM—Go beyond OTDR Testing

Innovation is front and center at EXFO, and the intelligent Optical Link Mapper (iOLM) is a prime example of a game-changing solution. The iOLM lets you take advantage of the full power of your OTDR, bringing automation to a new level—and enabling even the untrained technician to become a test expert in no time.

The iOLM integrates all our expertise into a simple, easy-to-use software that will take your OTDR testing capabilities further than they’ve ever been. And since EXFO designs and optimizes each OTDR model so that it offers the best possible performance for its specific application, your solution will fit to your reality.

iOLM—What Is It and How Does It Work?

The iOLM is an innovative OTDR-based application that uses multipulse acquisitions and advanced algorithms to deliver detailed information on every element on the link.

  • Offers one-touch, automatic analysis and clear link view display
  • Minimizes training and avoids misconfiguration thanks to automatic parameter settings and clear go/no-go results
  • Turns complex OTDR information into simple and accurate analysis with Link-Aware technology, minimizing truck rolls
  • Identifies each event on the network and obtain a straightforward fiber link status with the Optical Link View
  • Provides prompt diagnosis to fix network issues quickly and efficiently
  • Generates OTDR trace files (.sor)

Related Resources

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Discover how you can achieve fast and reliable fiber link characterization from day one with EXFO’s iOLM solution.

Last updated: 2014-05-29

Pulse Selection vs. Dead Zone

Application Notes

Generally speaking, the rationale behind selecting the shortest pulse on an OTDR is to obtain the best spatial resolution, and the best event and attenuation dead zones needed to detect and measure very closely spaced events.

Last updated: 2014-05-02

OTDRs are often used with a launch fiber/cable, and may also use a receive fiber/cable. The launch cable, aka “pulse suppressor” or “dummy fiber,” allows the OTDR to recover after the test pulse is sent into the fiber. This cable provides an invaluable reference on the first connector of the cable under test for determining its loss and reflectance.

Last updated: 2014-02-03

Join us as we explore the real-life case study of a 17 Channel High Speed DWDM system exhibiting correctable FEC errors. As this network was carrying extremely high traffic, identifying the issue on this live, in service link without compromising the network was a challenge. The customer needed the right tools along with the right troubleshooting approach to pinpoint the problem and solve it quickly. The webinar will benefit anyone who is charged with maintaining, or upgrading a DWDM, high speed network. 
Last updated: 2013-12-17


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