BOTDR (Brillouin Optical Time Domain Reflectometry, optical fiber sensor)
6419A・Ceyear Corporation
Simultaneous measurement of strain distribution, loss distribution, and Brillouin scattering spectrum at various locations of the optical fiber.
The 6419A BOTDR can simultaneously measure strain distribution, loss distribution, and Brillouin scattering spectrum at various locations of optical fibers, and can display 3D and multiple distribution parameters. It offers advantages such as high-precision strain measurement, good reproducibility, and single-end non-destructive measurement. It has become an indispensable instrument in the fields of optical fiber communication and optical fiber sensing (OFS). The 6419A can be widely used for health monitoring of bridges, dams, tunnels, high-rise buildings, oil platform structures, and oil pipelines, as well as for predicting and warning of geological hazards such as landslides, mudflows, and earthquakes. It is also applicable for diagnosing intelligent structures such as ships and spacecraft. The 6419A can also be used to measure the strain distribution of fiber optic loops or underwater optical cables during the development, manufacturing, testing process, or during the development, manufacturing, construction, acceptance inspection, and maintenance of submarine optical cables.
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basic information
【Functions and Features】 - Single-end non-destructive testing - Measurement of Brillouin scattering spectral width distribution - Measurement of optical fiber strain distribution - Measurement of optical fiber loss distribution - Measurement of Brillouin scattering spectrum - Multi-window display - 3D display of loss distribution - Large screen color LCD display, touch screen operation
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Applications/Examples of results
★Monitoring of Submarine Optical Cables To prevent damage to optical fibers due to significant strain, it is necessary to measure the strain distribution of submarine optical fiber cables during manufacturing, post-arrival checkout, and pre- and post-construction checks and maintenance. Additionally, communication may be interrupted, potentially causing significant damage. The 6419 can be applied to measure strain distribution at all stages of optical fiber cable manufacturing, transportation, and construction. ★Detection of Geological Disasters (Landslides) By laying optical fibers in critical landslide areas, the 6419 BOTDR can be utilized to detect the movement of rock masses within the landslide and monitor real-time trends. If strain is significant, operators can set appropriate threshold alarms to address the situation in a timely manner, thereby avoiding substantial losses due to geological hazards. ★Monitoring of Tunnel Integrity ★Monitoring of Oil Pipelines ★Bridge Monitoring ★Dam Monitoring ★Power Line Monitoring ★Monitoring of Mining Passages ★Monitoring of Oil Well Platforms ★Health Monitoring of High-Rise Buildings ★Typical Experiments
Detailed information
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The three-dimensional distribution of Brillouin scattering spectra at different locations can be conveniently observed on a 3D display.
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Multi-window display allows simultaneous observation of strain, Brillouin scattering spectrum, spectral width, and scattering power at various locations along the optical fiber.
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Long-distance detection: 6419 can detect fiber optic lines up to nearly 80 km.
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"Spatial resolution of less than 1 meter" By optimizing the optical path, circuit, and data processing model, the spatial resolution of 6419 will be less than 1 meter. In the right diagram, the distance between marker 1 and marker 2 is 1 meter, and the distance between marker 3 and marker 4 is 0.5 meters.
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High-precision strain testing Under a pulse width of 10 ns, the strain testing accuracy of the 6419BOTDR reaches ±18 με at a distance of 11 km.
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Application: Monitoring of submarine optical cables
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Application: Detection of Geological Disasters (Landslides)
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Application: Monitoring the health of tunnels
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Application: Monitoring of Oil Pipelines
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Company information
As a company that provides unique and innovative solutions in EMC testing and general measurement, Wavecrest Corporation is active in this field. The increasingly advanced electronic and communication environment not only affects the performance of its products but also serves as a social infrastructure that impacts the overall safety of society, requiring high safety and reliability. We aim to offer new products and solutions that the market needs, without being constrained by traditional testing methods and equipment.