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

Yang, Shuming, Jiang, Xiang, Maxwell, Graeme and Wang, Kaiwei (2008) An integrated optical coupler used in a fibre interferometry system for on-line surface measurements. Optics Communications, 281 (5). pp. 1099-1107. ISSN 0030-4018

Abstract

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.

Item control for Repository Staff only: