EXFO. has been granted a patent for a power meter test arrangement that measures optical power loss in optical-fiber devices, particularly those with multifiber connectors. The invention includes an optical-fiber expansion device that allows for pinning adjustments without increasing measurement uncertainty. GlobalData’s report on EXFO gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on EXFO, AI-assisted repair estimation was a key innovation area identified from patents. EXFO's grant share as of June 2024 was 66%. Grant share is based on the ratio of number of grants to total number of patents.
Optical power loss measurement for fiber devices
The granted patent US12047117B2 presents a power meter test arrangement designed to accurately measure the optical power loss of an optical-fiber device under test (DUT). The arrangement includes a first and second test cord that connect to the DUT, forming a test link. A power meter instrument is equipped with an input connector interface for optical power measurement and at least one fiber-pigtailed power detector. Additionally, the system features an optical-fiber expansion device that connects to the power meter's input interface and the test link. This device is designed to modify the pinning arrangement of the input connector interface without introducing additional measurement uncertainty, ensuring precise optical power loss measurements.
Further claims detail the configuration of the second connector interface, which can accommodate both angle-polished (APC) and non-angle-polished (UPC) connectors. The hybrid ferrule design includes multiple polished surfaces to facilitate effective connections to the DUT. The arrangement can also incorporate multiple optical fibers and fiber-pigtailed power detectors, enhancing measurement capabilities. The optical fibers utilized in the system are specified to have a core diameter between 60 and 90 µm and a numerical aperture ranging from 0.2 to 0.22. Additionally, the patent outlines an insertion loss test set that integrates an optical source instrument with the power meter test arrangement, further streamlining the measurement process for optical power loss in fiber optic systems.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
