Study of micro-displacement measuring system with double F-P interference cavities

Xiufang Yang; W. L. Wei; Xiaoming Wang

doi:10.1117/12.666828

9 December 2005 Study of micro-displacement measuring system with double F-P interference cavities

Xiufang Yang, W. L. Wei, Xiaoming Wang

Proceedings Volume 6024, ICO20: Optical Devices and Instruments; 60240M (2005) https://doi.org/10.1117/12.666828
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

A kind of Micro-displacement measuring instrument using double interference cavities is designed. It is based on F-P interference wave length One of interference cavities is reference cavity, the other is measuring cavity. One reflect surface of reference cavity is installed with piezoelectric ceramics, One reflect surface of measuring cavity is erected with an object to be measured. When the central wavelengths in reference Fabry-Perot interference and in measuring Fabry-Perot interference are overlapped, there are the maximum light signal outputs. Based on the relationship between the transmission spectrum central wave length and its interference cavity length, this measuring instrument can be used to realize the real time measurement of Nano-grade micro-displacement. Using simi- conductor laser as the light resource can obtain the required wavelength values and its variation scopes. It can be seen from the measured results that the measured error is not over 1.5nm. Such a precision can satisfy the precision requirements as in the fields of precision mechanical processing, photoelectronic processing and Nano- grade measuring technology.

Citation Download Citation

Xiufang Yang, W. L. Wei, and Xiaoming Wang "Study of micro-displacement measuring system with double F-P interference cavities", Proc. SPIE 6024, ICO20: Optical Devices and Instruments, 60240M (9 December 2005); https://doi.org/10.1117/12.666828

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