Title :
Large-scale FBG sensors utilizing code division multiplexing
Author :
Huang, Y.H. ; Chao Lug ; Wai, P.K.A. ; Tam, H.Y.
Author_Institution :
Electron. & Inf. Eng. Dept., Hong Kong Polytech. Univ., Hong Kong
Abstract :
We propose and demonstrate a practical low-cost interrogation system for large scale FBG sensor arrays utilizing code division multiplexing (CDM). Using our proposed system which is based on the correlation property of the CDM code, we can interrogate all the sensors simultaneously. For a 100-sensor system, the sensor detection speed can increase 250 times comparing with TDM based scheme without compromise on detection accuracy.
Keywords :
Bragg gratings; code division multiplexing; fibre optic sensors; optical correlation; superradiance; ASE source; TDM based scheme; code division multiplexing; correlation property; fiber Bragg grating sensors; large-scale FBG sensor arrays; low-cost interrogation system; sensor detection; Bragg gratings; Code division multiplexing; Fiber gratings; Large-scale systems; Optical fiber sensors; Optical sensors; Sensor arrays; Sensor systems; Time division multiplexing; Wavelength division multiplexing; (060.4080) Modulation; (0602330) Fiber optics communications; (070.5010) Pattern recognition;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
