PROCEEDINGS ARTICLE | October 17, 2012
Proc. SPIE. 8421, OFS2012 22nd International Conference on Optical Fiber Sensors
KEYWORDS: Optical fibers, Fiber amplifiers, Scattering, Sensors, Laser scattering, Fiber lasers, Fiber optics sensors, Raman spectroscopy, Rayleigh scattering, Raman scattering
A brief review of recent progress in researches, productions and applications of distributed fiber Raman sensors at China
Jiliang University (CJLU) is presented. In order to improve the measurement distance, the accuracy, the space resolution,
the ability of multi-parameter measurements, and the intelligence of distributed fiber sensor systems, a new generation
fiber sensor technology based on the optical fiber nonlinear scattering fusion principle is proposed. A series of new
generation distributed fiber sensors are investigated and designed, which consist of new generation ultra-long distributed
fiber Raman and Rayleigh scattering sensors integrated with a fiber Raman amplifier (FRA), auto-correction full
distributed fiber Raman temperature sensors based on Raman correlation dual sources, distributed fiber Raman
temperature sensors based on a pulse coding source, distributed fiber Raman temperature sensors using a fiber Raman
wavelength shifter, a new type of Brillouin optical time domain analyzers (BOTDA) integrated with a fiber Raman
amplifier, distributed fiber Raman and Brillouin sensors integrated with a fiber Raman amplifier, and distributed fiber
Brillouin sensors integrated with a fiber Brillouin frequency shifter. Sensor networks are important components of the
internet of things. The distributed optical fiber sensor network (Rayleigh, Raman, and Brillouin scattering) is a 3S (smart
materials, smart structure, and smart skill) system, which is easy to construct smart fiber sensor networks. The
distributed optical fiber sensor has been applied to the power grids, railways, bridges, tunnels, roads, constructions, water
supply systems, dams, oil and gas pipelines and other facilities, and can be integrated with wireless networks.
