Shaopu Wang

TL;DR: The proposed MZIs have lower temperature sensitivities compared with normal fiber sensors, which is a desirable merit for RI sensors to reduce the cross sensitivity caused by thermal drift.

TL;DR: Experimental results indicate that with this calibration method, the DMIT can achieve a measurement repeatability of λ/20 (PV) when the freeform SUT has obvious alignment error, which is adequate for most aspheric and freeform surface measurements.

TL;DR: This paper introduces VROC error measurement of aspheric surface by using slope asphericity with partial compensation interferometry and indicates that the method exhibits relative measurement accuracy of 0.01% when the nominal VROC is 889 mm, and the decoupled SFE error is λ/10 of the peak-to-valley value.

TL;DR: A diaphragm-free fiber gas pressure sensor based on the extrinsic Fabry-Perot interferometer (EFPI) is proposed and experimentally demonstrated and has properties of robust structure, miniature size, large measuring range, and high sensitivity.

TL;DR: Imaging simulations illustrate that the sensor possesses the retina-like property, i.e., logarithmic-polar transformation, and results indicate that the overlapping angles between the two micro lenses on the adjacent rings can be reduced by decreasing the rings and the blind radius, and increasing the sectors.