Evaluation of the Optical Fiber Bragg Grating's Performance for Biomedical Applications

This article presents the design, simulation, and analysis of an optical fiber Bragg grating (OFBG) sensor for use in medical applications. The paper focuses on optimizing the grating period values by using particular interrogation wavelengths. The principle of detection of this sensor is based on the change in the period of the grating which is caused by the application of a strain. The impacts of an FBG's opto-geometric are examined through simulations using coupled mode theory in the Grating Mod module of the Rsoft Photonics CAD program. The findings show that the Bragg wavelength shifts and changes in value in response to period modifications, demonstrating a high level of FBG sensitivity. By considering a wide range of influential factors, these sensors have the potential to accurately forecast their performance and provide reliable measurements in complex biomedical settings. Additionally, the FBG's reflecting properties are modified to provide sensitive sensors that can operate in real-life conditions. This type of sensor of 1mm size has the capability to forecast its performance in intricate biomedical settings, taking into consideration influential factors such as electromagnetic interference, humidity, temperature fluctuations, and other essential environmental elements.