This work presents the fabrication and characterization of a fiber optic gas sensor utilizing Lossy Mode Resonances (LMR) achieved with a nanoscale polyphenylene oxide (PPO) coating. The PPO coating is applied to the cladding removed region of a multi-mode silica fiber, simultaneously serving as both the LMR support layer and the sensing material. The PPOcoated LMR sensor is exposed to various concentrations of ammonia as a case study. The sensor demonstrates a high sensitivity of 0.25 nm/ppm within the ammonia concentration range of 2.5 to 37.5 ppm. These results highlight the potential of this PPO-based fiber optic sensor for efficient and sensitive detection of hazardous compounds in different settings, ranging from medical to industrial.
Fiber optic lossy mode resonance sensors for chemical sensing
Choudhary, Sukanya;Esposito, Flavio
;Campopiano, Stefania;Iadicicco, Agostino
2025-01-01
Abstract
This work presents the fabrication and characterization of a fiber optic gas sensor utilizing Lossy Mode Resonances (LMR) achieved with a nanoscale polyphenylene oxide (PPO) coating. The PPO coating is applied to the cladding removed region of a multi-mode silica fiber, simultaneously serving as both the LMR support layer and the sensing material. The PPOcoated LMR sensor is exposed to various concentrations of ammonia as a case study. The sensor demonstrates a high sensitivity of 0.25 nm/ppm within the ammonia concentration range of 2.5 to 37.5 ppm. These results highlight the potential of this PPO-based fiber optic sensor for efficient and sensitive detection of hazardous compounds in different settings, ranging from medical to industrial.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
