Abstract In this study, a new approach using optical fiber sensor based on a single fiber Bragg grating (FBG) is proposed to overcome the cost and complexity limitations. The reflected frequency of the half-etched region is shifted by utilizing a half-etched uniform FBG as the sensing element. The proposed sensor is evaluated using the refractive index measurement technique, and its validity is demonstrated by subjecting it to temperature variations. A sensitivity of − 524.48 MHz/°C is exhibited by the proposed sensor over a dynamic range of about 25 °C to 70 °C. It is demonstrated that the proposed sensor is highly sensitive, cost-effective, and reduces the complexity of the manufacturing and measurement process. This novel approach has significant potential for applications in various fields, including biomedical sensing, environmental monitoring, and industrial process control.
展开▼
