Fast searching measurement of absolute displacement based on submicron-aperture fiber point-diffraction interferometer

Zhejiang Provincial Natural Science Foundation of China [LY17E050014, LY13E060006, Q14E060016]; National Natural Science Foundation of China (NSFC) [11404312, 51476154, 51404223, 51375467]; Zhejiang Key Discipline of Instrument Science and Technology [JL150508, JL150502]; Guangxi Key Laboratory of Automatic Detecting Technology and Instruments [YQ15204]; Guangxi Colleges and Universities Key Laboratory of Optoelectronic Information Processing [KFJJ2014-03]