Geotechnical stability is a major concern for the long-term safety and integrity of
underground infrastructures such as tunnels, railway stations, mine shafts and hydraulic …

This paper reviews the work on huge capacity fiber-optic sensing network based on ultra-
weak draw tower gratings developed at the National Engineering Laboratory for Fiber Optic …

A novel fiber Bragg grating (FBG) sensor system for measurement of strain and temperature
is proposed in this paper. The proposed sensor technique is based on time-division …

A quasi-distributed optical fiber sensing network with large multiplexing capacity, which is
based on identical weak fiber Bragg gratings, is proposed, theoretically analyzed and …

Wavelength-division multiplexed interrogation of fiber Bragg gratings (FBGs) is reported. A
directly modulated distributed-feedback laser array is used as a multi-wavelength, frequency …

A fiber Bragg grating (FBG) sensor system based on a semiconductor optical amplifier
connected in a ring cavity configuration is proposed. The proposed configuration produces …

In this work, we report on a twin-core fiber sensor system that provides improved spectral
efficiency, allows for multiplexing and gives low level of crosstalk. Pieces of the referred …

Ultrashort fiber Bragg gratings (US-FBGs) have significant potential as weak grating sensors
for distributed sensing, but the exploitation have been limited by their inherent broad spectra …

An array of in-line curvature sensors on a garment is used to monitor the thoracic and
abdominal movements of a human during respiration. The results are used to obtain …

The dual-wavelength differential detection technique is used to interrogate fiber Bragg
grating sensors. A directly modulated distributed-feedback laser array acts as a multi …