The authors describe a passive technique for sensing the strain-induced wavelength shift of a fibre Bragg grating (FBG) using a Mach-Zehnder interferometer that utilises a 3 × 3 coupler. Laboratory data show that a resolution of ~10 nε/√Hz RMS is achievable with inherent insensitivity to source intensity variations.
No takes yet. Share an insight, caveat, or question.
Todd et al. (1999) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: