Vol. 31, Issue 4, pp. 781-789 (2001)

Abstract

An extension to the modified coupled-mode method is presented, which allows the state of polarization to be calculated for a general case of a multiply perturbed fibre. Being based on numerical solution of coupled-mode equations, it can be used when an analytical solution of the coupled-mode equations does not exist; or is difficult to obtain. The present method was developed as a design tool for polarimetric optical fibre sensors. Short computation time was achieved as a result of modification to the solved coupled-mode equations.