Testing Cabling With MPO Connectors – What’s New?
With the wide variety of standards relating to fiber optic cabling, the absence of published standards for testing fiber optic cabling terminated with MPO connectors might come as a surprise. Finally, a technical report (TR), written by this author, is scheduled for a June 2017 publication that provides such testing guidance - it is TR/IEC 61282-15. A technical report provides guidance on a subject but does not have requirements (e.g. no “shalls”) as an international standard or an ANSI/TIA standard would.
Here is a sneak preview of the introduction from TR/IEC 61282-15 MPO testing technical report, paraphrased:
Cabling standards such as IEC 61280-4-1 and IEC 61280-4-2 for multimode and single-mode attenuation measurements, respectively, describe testing simplex or duplex cabling terminated with single-fiber ferrule connectors. TR/IEC 61282-15 has been written to describe testing in the absence of any MPO (multi-fiber) testing standard.
TR/IEC 61282-15 addresses the testing of cabling terminated with multi-fiber connectors (e.g. 12 fibers) of the IEC 61754-7 family related to multi-fiber push on (MPO) and describes the challenges when testing array connectivity. It goes on to describe what is important to measure and why IEC 61280-4-2 and IEC 61280-4-1 cannot be used. TR/IEC 61282-15 also compares the various methods of testing using light sources and power meters, OTDRs, fan-out cords, optical switches, and so on.
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Better yet, here is an excerpt from the table of contents listing the variations in test methods:
- Optical light source
- Source with MPO interface
- Source with non-MPO interface and fan-out cable
- Source with non-MPO interface and optical switch
- medidor de energia óptica
- Meter with MPO interface having multiple detectors
- Meter with MPO interface having large area detector
- Meter with non-MPO interface and fan-out cable
- Meter with non-MPO interface and optical switch
- OTDR with MPO interface
- OTDR with non-MPO interface and fan-out cable
- OTDR with non-MPO interface and optical switch
TR/IEC 61282-15 was developed in subcommittee 86C, working group 1 and other standards bodies are very interested in adopting this technical report including TIA/TR42 and SC25C.
Once the Technical Report is published, we’ll get into a little more detail on the contents. Stay tuned.