Fiber interrogated and graphene enhanced Brillouin optomechanical microresonator for ultra-sensitive gas detection

B. Yao; C. Yu; Y. Wu; S. Huang; H. Wu; Y. Gong; Y. Chen; Y. Rao

doi:10.1117/12.2276137

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8 June 2017 Fiber interrogated and graphene enhanced Brillouin optomechanical microresonator for ultra-sensitive gas detection

B. Yao, C. Yu, Y. Wu, S. Huang, H. Wu, Y. Gong, Y. Chen, Y. Rao

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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103239R (2017) https://doi.org/10.1117/12.2276137
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

Forward phase-matched Brillouin optomechanical resonance, excited by a tapered fiber, in a graphene inner-deposited whispering-gallery-mode microfluidic cavity, is demonstrated for the first time. The generated Brillouin optomechanical modes with Q factor ≈ 47000 show extremely high sensitivity (200kHz/ppm) for absolute gas detection based on frequency variation, achieving a detection limit down to 1 ppb and a dynamic range >10⁵ orders of magnitude.

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B. Yao, C. Yu, Y. Wu, S. Huang, H. Wu, Y. Gong, Y. Chen, and Y. Rao "Fiber interrogated and graphene enhanced Brillouin optomechanical microresonator for ultra-sensitive gas detection", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239R (8 June 2017); https://doi.org/10.1117/12.2276137

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