APPLICATION OVERVIEW
Distributed Fiber Optic Sensing (DFOS)
High-Speed waveform acquisition for distributed measurements of temperature, strain and vibration.
GaGe Digitizers capture the electrical waveforms that help interrogator developers translate optical backscatter into measurements along the fiber.
Read the fiber through its backscattered light
A DFOS interrogator measures changes in returned light to infer conditions along the fiber. In pulse-based systems, return timing identifies position. A triggered digitizer records the detector waveform for processing.
Three common approaches to DFOS
Distributed Acoustic Sensing
DAS
Rayleigh backscatter for vibration and acoustic events
Distributed Temperature Sensing
DTS
Raman backscatter for temperature measurements
Distributed Strain Sensing
DSS
Brillouin-based strain and temperature sensing
Why the digitizer matters
Sampling rate and bandwidth
Capture the high-speed detector waveforms with sufficient bandwidth,
Vertical resolution and signal fidelity
Preserves small changes in the backscattered signal for accurate measurement retrieval.
Triggering and acquisition timing
Synchronizes acquisition to the laser pulse and provides precise tming for position mapping.
Memory and data transfer
Supports long acquisitions and efficient transfer to the host for processing.
Spatial sampling spacing and optical spacial resolution are different system parameters.
Free Application Review
See how GaGe digitizers can deliver the speed, signal fidelity, and acquisition flexibility your most demanding measurement applications require. A Vitrek application engineer will follow up within one business day.
