An integrated optical coupler used in a fibre interferometry system for on-line surface measurements

Details An integrated optical coupler used in a fibre interferometry system for on-line surface measurements An integrated optical coupler used in a fibre interferometry system for on-line surface measurements

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008optco.281.1099y&link_type=abstract

Optics Communications, Volume 281, Issue 5, p. 1099-1107.

Physics

Optics

1

Scientific paper

In this paper, an integrated optical (IO) coupler produced using the technique of silica-on-silicon was described. A fibre interferometry system using the IO coupler was then developed and its performance was tested. The environmental noise and disturbances in this system were reduced significantly after combining a reference interferometer and an all fibre polarisation scrambler so as to produce good stability and repeatability. Furthermore, the measurement mirror was mounted on a piezoelectric transducer (PZT) and disturbances were introduced in the system in order to simulate on-line surface measurements. Both a commercial fibre and the IO couplers were compared using this method. Better experimental results were achieved when the system using the IO coupler than using the fibre one.

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