TY - JOUR
T1 - Photonic crystal fiber long-period grating absorption gas sensor based on a tunable erbium-doped fiber ring laser
AU - Zheng, Shijie
AU - Ghandehari, Masoud
AU - Ou, Jinping
N1 - Funding Information:
This research work has been supported by National Science Foundation of China under Grant No. 51408165 , by China Postdoctoral Science Foundation under Grant No. 2014M560265 and 2015T80356 , by Natural Science Foundation of Heilongjiang under Grant No. QC2015048 .
PY - 2016/2/1
Y1 - 2016/2/1
N2 - It has been a persistent challenge to quantify gas emissions from industrial byproducts and warfare agents for environmental protection purposes, especially to detect multiple gas species using one device with high sensitivity and selectivity. To overcome this issue, a photonic crystal fiber (PCF)-based spectroscopic absorption sensing platform is proposed. We combine the PCF and long-period grating (LPG), two fundamental elements of fiber optics, into one functional unit to investigate the coupling properties of various PCF cladding modes. Further, we synchronize the PCF-LPG with a tunable Er-doped fiber ring laser into a thermo-stable and compact absorption spectroscopic sensor as a proof-of-concept for gas sensing. Because the Er-doped fiber ring laser can be tuned within the C-band wavelength, multiple gases can be recorded with the absorption spectra in one sensing operation. As a demonstration, the sensor was tested in NH3 with multiple gases combined, a sensitivity up to 17.3 nW/ppm was achieved. The PCF-LPG-based gas sensors are easy-to-fabricate, cost-effective, and can be used in various applications where conventional fiber-optic sensors are not applicable.
AB - It has been a persistent challenge to quantify gas emissions from industrial byproducts and warfare agents for environmental protection purposes, especially to detect multiple gas species using one device with high sensitivity and selectivity. To overcome this issue, a photonic crystal fiber (PCF)-based spectroscopic absorption sensing platform is proposed. We combine the PCF and long-period grating (LPG), two fundamental elements of fiber optics, into one functional unit to investigate the coupling properties of various PCF cladding modes. Further, we synchronize the PCF-LPG with a tunable Er-doped fiber ring laser into a thermo-stable and compact absorption spectroscopic sensor as a proof-of-concept for gas sensing. Because the Er-doped fiber ring laser can be tuned within the C-band wavelength, multiple gases can be recorded with the absorption spectra in one sensing operation. As a demonstration, the sensor was tested in NH3 with multiple gases combined, a sensitivity up to 17.3 nW/ppm was achieved. The PCF-LPG-based gas sensors are easy-to-fabricate, cost-effective, and can be used in various applications where conventional fiber-optic sensors are not applicable.
KW - Absorption spectroscopy
KW - Fiber ring lasers
KW - Fiber-optic sensors
KW - Long-period gratings
KW - Photonic crystal fiber
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U2 - 10.1016/j.snb.2015.09.083
DO - 10.1016/j.snb.2015.09.083
M3 - Article
AN - SCOPUS:84944128709
SN - 0925-4005
VL - 223
SP - 324
EP - 332
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -