
There are two types of IEC standards for MT/MPO measurements using interferometry.
The first is the “Measurement Standard” and its primary purpose is to try and ensure that different instruments yield the same measurement results. This standard includes information on measurement techniques, measurement parameters, fitting regions, reference points, calculations and in some cases the algorithms used to define each parameter. This is a priority standard and its number is 61300-3-30.
The second is “Performance or Interface Standards” which relate to specific connector styles or groups. For example, there might be one for MT connectors and another for angled MT connectors. These documents refer to 61300-3-30 as the measurement technique and then continue to elaborate on specific parameters to be measured, ferrule dimensions, tolerances and pass/fail limits. These documents are aimed more toward companies manufacturing, polishing or purchasing connectors.
READ THE BLOG: Navigating IEC standards for MT/MPO measurements using interferometry
Additional resources from the FOC team include:
- Category Resource:
- View the Glossary, Acronyms, Military Specifications for Connectors
- Q&A Resource: email technical questions to AskFOC@focenter.com
Have questions about this FOC Tip?
Contact FOC with questions at: (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.
This article is an original publication of Fiber Optic Center, Inc. It is shared publicly for educational and reference purposes to support learning and professional development within the fiber optics industry.
You are welcome to read, cite, or reference this material for non-commercial and educational purposes, as long as full credit is given to Fiber Optic Center, Inc. and the author.
Reuse, reproduction, or adaptation of this content — including rewriting, republishing, or incorporating it into new materials (such as websites, blogs, marketing text, technical guides, or AI-generated content) — is not permitted without prior written consent from Fiber Optic Center, Inc.
This material is protected by copyright law upon publication, even if not formally registered.
Use of this content for AI training, automated data extraction, or derivative content generation is prohibited.
Fiber Optic Center monitors and enforces the integrity of its intellectual property through digital identifiers and content tracking.
For more details, please refer to the Fiber Optic Center Content Use and Copyright policy.


