A curve fitting signal processing scheme for a white-light interferometric system with a synthetic source |
| |
| Authors: | Q. Wang Y.N. Ning K.T.V. Grattan A.W. Palmer |
| |
| Affiliation: | The authors are in the Department of Electrical, Electronic and Information Engineering, City University, Northampton Square, London EC1V OHB, UK |
| |
| Abstract: | A white-light interferometric system, which comprises two Michelson interferometers linked by a 100 μm diameter core multimode step index fibre has been investigated, where a signal processing scheme, using curve fitting, has been introduced to suppress the noise induced in the system. The theoretical resolution of such a sensor with the use of an appropriate curve fitting signal processing scheme has been discussed. The experimental results obtained show the short term repeatability (to three standard deviations) to be better than 5 nm after signal processing, under conditions where the fibre is constantly vibrated in a known and reproducible way. |
| |
| Keywords: | signal processing curve fitting interferometry |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
