A high-quality nanolayer graphene (NLG) coated hollow core fiber (HCF) platform has been demonstrated for accurate monitoring of refractive index (RI) changes so far mainly operate in liquids but not in air. The NLG with high index is deposited on the outer surface of the HCF, and an enhanced anti-resonant reflecting guidance is formed, which induces sharp periodic lossy dips in the transmission spectrum. A cute experiment conducted interrogating the transmission intensity of the lossy dip demonstrates a high resolution of 2.73×10-6 RIU and a sensitivity of -365.9 dB/RIU, which is two or three times higher than that of intensity-modulated RI sensors reported previously. We believe that this configuration opens research directions for highly sensitive sensing in researches of chemistry, medicine, and biology.
|Title of host publication||ICOCN 2017 - 16th International Conference on Optical Communications and Networks|
|Number of pages||3|
|Publication status||E-pub ahead of print - 1 Dec 2017|
|Event||16th International Conference on Optical Communications and Networks, ICOCN 2017 - Wuzhen, China|
Duration: 7 Aug 2017 → 10 Aug 2017
|Conference||16th International Conference on Optical Communications and Networks, ICOCN 2017|
|Period||7/08/17 → 10/08/17|
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Funding: National Natural Science Foundation of China (61505119, 11174064, 61308027, and 61377090), National Postdoctoral Program for
Innovative Talents (BX201600077), Brain Gain Foundation of Nanjing University of Posts and Telecommunications (NY215040) and the Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province (GD201706)
- Hollow core fiber
- Refractive index sensing