Dual-core side-hole fiber for pressure sensing based on intensity detection

D. Chen, G. Hu, M. L.V. Tse, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

12 Citations (Scopus)


We propose a novel dual-core side-hole fiber (DCSHF) for air/hydrostatic pressure sensing. Two large air holes are employed in the cross-section of the DCSHF, which result in a difference of the pressure-induced index changes for two fiber cores. The mode coupling between two fiber cores of the DCSHF is sensitive to the pressure-induced index change which ensures the intensity detection of the DCSHF-based pressure sensor. A segment of DCSHF with a length equal to the coupling length of the mode coupling between two fiber cores is used as a pressure sensor. When the light is injected into the central fiber core of the DCSHF, there is a one-to-one correspondence between the pressure and the output power on the output side of the central fiber core. A pressure sensor based on a typical DCSHF can achieve a pressure measurement range of 27 MPa. DCSHFs with different structure parameters for pressure sensing are investigated.
Original languageEnglish
Pages (from-to)775-784
Number of pages10
JournalJournal of Electromagnetic Waves and Applications
Issue number5-6
Publication statusPublished - 1 Feb 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Physics and Astronomy
  • Electrical and Electronic Engineering


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