Remote fiber optic interferometric sensing for surface profiling

Faramarz Farahi; David A. Jackson

doi:10.1117/12.20304

1 August 1990 Remote fiber optic interferometric sensing for surface profiling

Faramarz Farahi, David A. Jackson

Proceedings Volume 1267, Fiber Optic Sensors IV; (1990) https://doi.org/10.1117/12.20304
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

A fibre optic interferometric sensor for the analysis of surface texture is presented, which incorporates optical fibre links to achieve a remote and passive sensing head. A synthetic heterodyne signal recovery scheme based upon modulating the frequency of the laser diode source was used to generate a high frequency optical carrier ideal for in-process surface profiling. It is demonstrated that the system is capable of both differential and absolute measurements, a resolution of .O.1 nm/ IHz was achieved.

Citation Download Citation

Faramarz Farahi and David A. Jackson "Remote fiber optic interferometric sensing for surface profiling", Proc. SPIE 1267, Fiber Optic Sensors IV, (1 August 1990); https://doi.org/10.1117/12.20304

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