Optical Fiber Sensors for Monitoring Post-Tensioning Strands:
Phase II: Tests on strands tensioned in a laboratory testing bed to evaluate the accuracy and reliability of the strain readings collected from the optical fiber technology compared with other sensing
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Large strain-tolerated smart steel strand with built in coaxial cable
This study aims to develop a large strain-tolerated coaxial cable Fabry–Perot interferometer (CCFPI) smart steel strand. Firstly, a thin CCFPI sensor was proposed by the
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Recommended Practices for Optical Fiber Construction and Testing
These recommended practices cover all aspects of optical fiber construction and testing from project management, through deployment, to activation and testing. These practices are fundamentally
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Fiber Optic Cable Fundamentals and Testing Explained
Fiber optic cables are a top choice for high-speed communication systems and can also serve as sensors to measure and monitor various quantities. In the electrical power industry, optical
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Strain Transfer Mechanisms and Mechanical Properties of Optical
Understanding the strain transfer mechanism is required to interpret strain sensing results for fiber optic cables. The strain transfer mechanism for fiber optic cables embedded in
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AlumaCore OPGW Cable | Lightweight Optical Ground Wire | AFL
The OPGW cable design is constructed of a fiber optic core (with multiple sub-units depending on the fiber count) encased in a hermetically sealed hardened aluminum pipe with a covering of one or
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Spiral Deployment of Optical Fiber Sensors for
Eight concrete bar specimens were cast, each with a pre-embedded plastic or metal duct at its center and each was post-tensioned by a steel strand
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Spiral Deployment of Optical Fiber Sensors for Distributed Strain
Eight concrete bar specimens were cast, each with a pre-embedded plastic or metal duct at its center and each was post-tensioned by a steel strand through the duct once they were
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Spiral Deployment of Optical Fiber Sensors for Distributed Strain
This study aimed to develop a spiral deployment scheme of distributed fiber optic sensors (DFOS) and to monitor/assess the post-tensioned force in seven-wire twisted steel cables, based on the pulse
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Cable, Strand and Wire Rope Testing
Beside the full-scale cable and PT system testing, CTLGroup can also perform the tests for cable and PT components, such as steel strands and anchor heads in accordance with ASTM Standards, PTI,
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Post-tensioning Force Measurement Using Optical Fiber Sensor
To this end, optical fiber sensor-embedded prestressing strands are evaluated. The test program is aimed at verifying that accurate and reliable data for the force along the tendon length can be
View moreLaser Diodes & VCSEL
High-power CW/pulsed laser diodes (808nm–1550nm) and VCSEL arrays for 3D sensing, LIDAR, and optical interconnects.
Silicon Photonics & CPO
Co-packaged optics engines, silicon photonics ICs, and optical I/O solutions for high-density switches and AI clusters.
Optical Transceivers & AOCs
400G/800G QSFP-DD/OSFP modules, active optical cables, and custom optical engines for data center interconnects.
Laser Drivers & CDR
Low-jitter laser drivers, integrated CDR circuits, and linear TIAs for coherent optics and short-reach links.