O. N. Egorova, S. A. Vasil'ev, I. G. Likhachev, S. E. Sverchkov, B. I. Galagan, B. I. Denker, S. L. Semenov, V. I. Pustovoi, “A Fabry–Perot interferometer formed in the core of a composite optical fibre heavily doped with phosphorus oxide”, Kvantovaya Elektronika, 2019, Volume 49, Number 12,Pages <nobr>1140

Selection of reports presented at the 7th All-Russian Conference on Fiber Optics (8-11 October 2019, Perm) (edited compiled by S.L.Semjonov)

A Fabry–Perot interferometer formed in the core of a composite optical fibre heavily doped with phosphorus oxide

O. N. Egorova^a, S. A. Vasil'ev^b, I. G. Likhachev^a, S. E. Sverchkov^a, B. I. Galagan^a, B. I. Denker^a, S. L. Semenov^b, V. I. Pustovoi^a

^a Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b Fiber Optics Research Center of the Russian Academy of Sciences, Moscow

Abstract: We report a new method for manufacturing a Fabry–Perot interferometer in the form of a microcavity in the optical fibre core. The method is based on the use of the process of electric discharge fusion splicing of a conventional optical fibre and a special composite fibre having a core with a high content of phosphorus oxide. The possibility of using this interferometer as a sensitive element of a strain sensor with high temperature stability is shown.

Keywords: Fabry–Perot interferometer, strain sensor, composite optical fibre.

Received: 13.09.2019
Revised: 15.10.2019