| In recent years many research and development projects have been focusing on studying the fiber Bragg gratings. Fiber Bragg gratings have been used in sensors, lasers and communication systems. Some of the FBG based devices are already available, but a lot of questions are still to be answered. The researchers are working towards better understanding physical processes underlying operation of TFBGS (coated or bare). Better understanding of grating operation should facilitate new applications such as biosensing, chemical sensing and combination with other optical technologies and physical phenomena. The key requirements for commercialization of TFBGs and their wide application are going to be the low cost, compactness, and high volume manufacturability.;On the other hand the field of software development and programming techniques are also very popular. The behavior of electromagnetic light wave within a single mode fiber (SMF) will be analyzed using coupled mode theory (CMT). CMT is a suitable tool for obtaining quantitative information about the spectrum of a fiber Bragg grating. The goal of this project is to create a model for a SMF with a tilt angle and with a metal coating using commercial finite waveguide solver so that this model can be used in the future by other members of the research group. The procedure is carried out using FIMMWAVE (v 5.3.2) software developed by Photon Design and MatLab (2010b). Using a framework of optical waveguide theory, a firm understanding of the inner workings of TFBGs will be gained. The process of modeling a SMF will involve studying the process of mode coupling within a fiber, creating the list of modes using Fimmwave and finally acquiring the transmission spectrum using. This new model will then be compared to the published experimental results obtained by former members of the research group. |
