FiberStrike FBG Temperature, Strain and Pressure Sensors

CEL's core range of Fiber Bragg Grating point sensors for temperature, strain and pressure, supplied in many configurations for bonding to existing structures or embedding in new construction.

Technical overview

These are passive FBG elements that require no electrical power at the sensing point and emit no signal, so they are immune to EMI/RFI, lightning and corrosion. CEL states the sensors resolve movement down to the picometer range. Multiple sensor types can be combined on a single fiber strand, and CEL cites as many as 50 sensors multiplexed on one optical fiber with hundreds of discrete sensors addressable per system. CEL applies foil, free filament, semiconductor and fiber optic gauge types and performs the surface preparation, gauge installation and egress routing.

Sensing Measurement Distributed Sensing

Features

Available in many different configurations
Sensors may be externally bonded to new or existing structures (e.g., steel members)
Sensors may be embedded in new construction (e.g., concrete and steel re-bar)
Measure movements down to the picometer range
The same sensors used during construction may be integrated into a permanent structural health monitoring system
Continuous monitoring facilitates predictive analysis of structural integrity
Passive, require no electrical power, and emit no signal

Specifications

Specifications
Parameter	Value
Measurement resolution (movement)	down to the picometer range pm
Minimum measurable movement	10-12 m (as published; CEL's page renders the exponent without superscript) m
Sensors multiplexed on a single optical fiber	as many as 50
Sensing distance, fiber optic end to monitoring equipment, no booster amplifiers	over 25 km
System response time to an event	less than three seconds, average 1.5 seconds s