Catalog & Support

  • Instrumentation & Services

    Find Products, Service Centers, Dealerships, Manuals, and more.

  • Business Services

Companies & Community

  • Company
  • Industry Forums
  • T&M Job Bank (Openings)


  • Products & Services
  • Assets for Share/Rent
  • Trade-Ins & Deals
  • Donations & Recycle
  • Books




  • Product Documentation
  • Training
  • Techniques & Solutions
  • Product & Service Advisor



  • Forums
  • Global Event Calendar
  • Frequently Asked Questions

_________________________ This section requires a Corporate membership _________________________

Products & Services Wanted

  • Products & Related Services
  • Trade-Ins
  • Donations & Recycle
  • Open Solicitations - Products
  • Open Solicitations - Services

Mergers & Acquisitions

  • Offered
  • Wanted


  • Collaboration Offered
  • Collaboration Wanted
  • Sales Channels Offered
  • Sales Channels Wanted
  • T&M Job Bank (Resumes)


Fiber foundation done right with OTDR testing

For fiber characterization, the testing equipment will need to measure/find the following key parameters:

  • Insertion loss (IL): The loss of signal power expressed in decibels (dB) that results from the presence of an event on a fiber link, such as a splice or a connector. It represents a ratio of the power that comes out of the link over the power that goes in.

  • Optical return loss (ORL): The loss of signal power resulting from the reflection caused at a discontinuity in an optical fiber. It represents a ratio of the power that is reflected over the power that goes in.

  • Optical link length: The distance between the first network connector and the end of a fiber link, including the different events (connectors, fusion splices, macrobends, etc.). Fiber length can be from point-to-point or can be measure going through a splitter all the way to the ONT, depending on the measuring devices used.

  • Fiber-based faults: Any event on an optical link that doesn’t meet the required thresholds to achieve a pass diagnostic for a particular measurement.

400 Godin Avenue
G1M 2K2

EXFO is a leading provider of next-generation test, service assurance and end-to-end quality of experience solutions for mobile and fixed network operators and equipment manufacturers in the global telecommunications industry. EXFO's intelligent solutions with contextually relevant analytics improve end-user quality of experience, enhance network performance and drive operational efficiencies throughout the network and service delivery lifecycle. Key technologies supported include 3G, 4G/LTE, VoLTE, IMs, video, Ethernet/IP, SNMP, OTN, FTTx, xDSL and various optical technologies accounting for more than 38% of the global portable fiber-optic test market.


All Registered Trademarks, brand names and logos are respected and their ownership acknowledged. They are used on this website for information and reference purposes only. Test Interest doesn't assume any other implication or representation.