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Abstract In this paper, a microfiber Bragg grating (MFBG) is proposed and performed to detect ammonia gas directly with high sensitivity. The sensor is fabricated by etching Fiber Bragg grating… Click to show full abstract
Abstract In this paper, a microfiber Bragg grating (MFBG) is proposed and performed to detect ammonia gas directly with high sensitivity. The sensor is fabricated by etching Fiber Bragg grating (FBG) inscribed in a single mode photosensitive optical fiber. The response of the sensor for ammonia gas detection is studied by experiments. The result shows that the MFBG central wavelength red-shift occurs as the ammonia gas concentration increase. The experimental concentration detection sensitivity is about 171 pm/(mg/L) in range of 21.84–43.68 mg/L. And the sensor is insensitive for several possible interfering volatile organic compounds.
Journal Title: Optics Communications
Year Published: 2018
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