Title of article
Spatial Resolution Enhancement of Fiber-Optic Scanning White-Light Interferometer by Use of a Vernier Principle
Author/Authors
Zhao، Yang نويسنده , , Ansari، Farhad نويسنده , , Sun، Changsen نويسنده , , Tennant، Adam نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
-4430
From page
4431
To page
0
Abstract
A Vernier principle is employed to improve the spatial resolution of a fiber-optic white-light interferometer to the accuracy of 0.2 (mu)m. The Vernier principle is implemented by combination of interference fringes itself and a virtual fringe that is generated by means of software tracing the scanning mirror. Two rulers are read with respect to each other. This design is insensitive to intensity fluctuation of the interference fringe. The applications, submicrometer estimation for the quadrature-locking selection and the tolerance of the relative measurement, demonstrate its effectiveness.
Keywords
Doppler , Spectral density function , harmonizable functions , Estimation , Bias , covariance , Consistency , cyclostationary , multipath , aliasing
Journal title
Applied Optics
Serial Year
2003
Journal title
Applied Optics
Record number
76355
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