Submicrometer displacement sensing using inner-product multimode fiber speckle fields.
A multimode fiber sensor using the intensity inner product of speckle fields is presented. The sensitivity and the dynamic range of the displacement sensing are quantitatively analyzed. We show that the sensitivity of displacement can be in the submicrometer range. Experimental performances show that the results are consistent with the calculated results.
Yu
F T
FT
Wen
M
M
Yin
S
S
Uang
C M
CM