Meaning
Optical components etched into the core of optical fibers reflect specific wavelengths of light while transmitting all others. In industrial monitoring networks, fiber bragg gratings act as highly sensitive strain and temperature sensors that are immune to electromagnetic interference. Their application is restricted to systems utilizing specialized interrogators that interpret the wavelength shift of the reflected light.
Commercial Value
Industrial test facilities install fiber bragg gratings because they allow dozens of sensors to be multiplexed on a single fiber line. This multiplexing capability reduces the landed cost of cabling in complex environments like wind turbine blades or aircraft wings. Distributors bundle these optical sensors with signal processing hardware to sell complete structural monitoring solutions.
This bundling allows the supplier to maintain high margins on the hardware component of the contract.
Distribution Channel
Specialized sensor technologies require intensive technical support and calibration services during the initial deployment phase. Manufacturers distribute fiber bragg gratings through authorized value-added resellers who have the expertise to install and splice fiber networks. This channel structure protects the manufacturer from the high cost of direct field support while ensuring that customers receive the necessary installation training.
Application Limit
Despite their high sensitivity, these sensors are fragile and require careful protective packaging to survive harsh industrial installations. The use of fiber bragg gratings is constrained by the maximum strain limit of glass, which cannot match the high elongation of traditional foil gages. This mechanical boundary must be accounted for during the system design phase.
