In the petroleum industry, advances in technology are required for cost-effective production
in key reservoir exploration areas and oil-well production management to increase yield and …

Fiber Bragg grating (FBG) accelerometers measure vibrations by demodulating wavelength
shifts induced by dynamic strain. Their high-temperature resistance and multiplexing …

A highly localized eccentric fiber Bragg grating (EFBG) accelerometer was proposed, and its
orientation-dependent measurement results were demonstrated experimentally. An EFBG …

A two-dimensional vector bending sensor that is both compact and simple is proposed and
demonstrated, based on an edge-core cladding-type fiber Bragg grating (ECLFBG) …

Point-by-point femtosecond laser processed fiber Bragg gratings are arranged around the
edge of a standard single-mode optical fiber core. The relative amplitudes of at least three …

A compact, high-performance bending sensor based on fiber microspheres array (FMA)
Michelson interferometer (MI) was experimentally proved. The sensor consists of a refractive …

First order off-axis fiber Bragg gratings (FBGs) were fabricated in a standard single mode
fiber (SMF-28e) through femtosecond laser direct writing. A minimum offset distance …

An off-axis fiber Bragg grating (FBG) was proposed and demonstrated for orientation-
dependent bend measurement. The FBG was formed in a few-mode fiber over core and …

Cladding waveguide fiber Bragg gratings (FBGs) provide a compact and simple solution for
fiber shape sensing. The shape sensing accuracy is limited by birefringence, which is …

We report a miniature and robust two-axis accelerometer using a cantilever beam structure
based on a multicore fiber (MCF) for pantograph-catenary system monitoring. Two cores of …