Ultrasensitive refractive index sensor based on graphene coated hollow core fiber

Meng Huang, Bing Sun, Wei Wei, Hongdan Wan, Zuxing Zhang, Lin Zhang

Research output: Chapter in Book/Published conference outputConference publication


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.

Original languageEnglish
Title of host publicationICOCN 2017 - 16th International Conference on Optical Communications and Networks
Number of pages3
ISBN (Electronic)9781538632734
Publication statusE-pub ahead of print - 1 Dec 2017
Event16th International Conference on Optical Communications and Networks, ICOCN 2017 - Wuzhen, China
Duration: 7 Aug 201710 Aug 2017


Conference16th International Conference on Optical Communications and Networks, ICOCN 2017

Bibliographical note

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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)


  • Air
  • Graphene
  • Hollow core fiber
  • Refractive index sensing


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