Acta Optica Sinica, Volume. 21, Issue 11, 1313(2001)
Passive Fiber Bragg Grating Sensor System Using Combined Spatial-and Time-Division Multiplexing Technique
Controlled by an 1×3 optical switch, light from a pulsed broadband source was launched into one of 3 independent strings of 5 FBG sensors. By introducing suitable length of fiber as time delay between adjacent two gratings in the same string, the return signals can be selected by a programmable electric switch. Demodulation was achieved by using an unbalance Michelson scanning interferometer. Combined spatial and time division multiplexing operation was demonstrated successfully.
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[in Chinese], [in Chinese], [in Chinese]. Passive Fiber Bragg Grating Sensor System Using Combined Spatial-and Time-Division Multiplexing Technique[J]. Acta Optica Sinica, 2001, 21(11): 1313