Abstract
In our study, we have designed and developed a side-polished optical fiber (SPOF) pulsewidth modulation (PWM)-based sensing system that can detect temperatures from 21 °C (room temperature) to 70 °C. According to the proposed SPOF PWM system, the received sensing signal pulsewidth changes if the optical fiber temperature sensing element (TSE) gets heat. The pulsewidth changes due to a change in the refractive index (RI) of the heat-sensitive polymer membrane of the SPOF TSE. We applied poly (3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT: PSS) as the primary temperature-sensitive sensing material to make the heat-sensitive polymer sensing membrane of the designed TSE. To the best of our knowledge, it is the first temperature sensing system/device where the optical sensing element uses PEDOT:PSS containing polymer sensing membrane and the optical PWM technique. The sensitivity and linearity of the designed TSE were approximately 960 ns/°C and 0.997, respectively. A microcontroller ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu \text{C}$ </tex-math></inline-formula> ) and readily available electronic component-based light detection and signal processing unit were designed to process the received sensing signal. The proposed temperature sensing system has different features: low cost, susceptibility, excellent hysteresis response, good reproducibility, highly stable performance, and others. The proposed SPOF TSE offers first response and recovery times of approximately 2.59 and 3.14 s, respectively. Finally, in our study, we compared the sensing performance of the proposed TSE with other temperature sensors in terms of the temperature measurement range, linearity, and response/recovery time. We found that the overall sensing performance of the proposed TSE is better than the other temperature sensors.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
