Interested firms shall have a proven experience and competence in Optical Time Domain Reflectometry
on Single Mode Optical Fibers and Distributed Temperature Measurements via Raman scattering on Single Mode Optical Fibers (dual wavelength OTDR systems).
Chang, "Signal-to-noise ratio enhancement based on empirical mode decomposition in phase-sensitive optical time domain reflectometry
systems," Sensors, vol.
• Optical Time Domain Reflectometry
(OTDR) based DTS systems
With 10 [micro]m spatial resolution, 500 m range, 125 dB sensitivity, and no dead zones, the OBR takes high resolution optical time domain reflectometry
to the next level.
The intrusion sensing technique using Rayleigh scattering in a single-mode optical fiber had the advantage of providing distance information; however, the sensitivity in optical time domain reflectometry
(OTDR) configuration  was not sufficient for underground burial application.
Tenders are invited for Optical time domain reflectometry
test tools and compact light weight splicing machine
Therefore, based on optical fiber sensing principles, optical time domain reflectometry
(OTDR) [10-12], and using the spatial structure of the beam, a new optical fiber sensor for landslides monitoring, COFT, was invented.