Low-reflectance fiber Bragg gratings (FBGs) can be interro- gated in real time with a high-resolution optical time-domain reflectom- etry (OTDR) technology. The technique allows interrogation of a series of FBGs with the intensity change based on the OTDR pulse spectral char- acteristics and the FBG reflection. Experimental results are presented for multiplexing of dual-wavelength FBG sensors to produce referencing calibration in sensor measurement. With this structure, the influence of the source power fluctuations and fiber bend losses can be greatly re- duced. This scheme can be applied to the practical measurement of distributed temperature or strain.
No takes yet. Share an insight, caveat, or question.
Po Zhang (2003) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: