Experimental and theoretical analysis of fiber Bragg gratings under lateral compression

In this paper. an experimental investigation is presented on reflection spectra of fiber Bragg gratings (FBG) under lateral compression together with the theoretical analysis. The coupled mode theory has been employed. by considering the LIP, and LIP, modes. to obtain accurate results for optical responses of FBG with compression-induced birefringence. The effects of polarization states of the incident light and compression conditions have also been investigated. Good agreements between experimental results and numerical simulations have been obtained. (C) 2002 Elsevier Science B.V. All rights reserved.