Lian Wang, Yuhao Chen, Jing Shi, Xiaozhan Yang. CO Sensor Based on Co-TCPP Coating Thin-Core Fiber[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0128001
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0128001 (2023)
Fig. 1. Schematic diagram of the CO sensing system
Fig. 2. Optical microscope image of the TCF. (a) TCF before etching; (b) TCF after etching; (c) structure of the thick taper
Fig. 3. SEM images of the sensitive film on the fiber surface. (a) Morphology of the Co-TCPP; (b) morphology of the back-end surface of the optical fiber coating
Fig. 4. Characterization results of sensitive materials. (a) TGA curve of the Co-TCPP; (b) XRD pattern of the Co-TCPP
Fig. 5. Characterization results by XPS and FTIR. (a) XPS spectrum of Co-TCPP; (b) high-resolution XPS spectra of Co2p; (c) high-resolution XPS spectra of O1s; (d) FTIR spectrum of Co-TCPP
Fig. 6. Detection results of CO gas. (a) Nonlinear fitting of mass fraction with intensity; (b) response curve of CO sensor
Fig. 7. Test results for sensor selectivity and stability. (a) Selectivity; (b) time stability
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