There is much interest in using optical fiber sensors for strain measurement because they are lightweight and are
insensitive to electromagnetic interference. Structural monitoring applications can employ fiber Bragg gratings (FBGs)
for point-by-point measurements, whereas continuous sensors, based on Brillouin scattering, can be used to measure
strain along entire lengths of un-modified optical fibers. These two strain measurement methodologies, and their
practical limitations, are compared. Accurate and reliable static strain measurement with FBGs, a turnkey
instrumentation with multichannel detection ability, and embedding techniques with repeatable calibration ability are
reported. Embedding techniques that survive high temperature cycling, and high humidity under salt water
environments, have been developed.