Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33889
Title: Dual-core side-hole fiber for pressure sensing based on intensity detection
Authors: Chen, D
Hu, G
Tse, MLV
Tam, HY 
Issue Date: 2011
Source: Journal of electromagnetic waves and applications, 2011, v. 25, no. 5-6, p. 775-784 How to cite?
Journal: Journal of Electromagnetic Waves and Applications 
Abstract: 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.
URI: http://hdl.handle.net/10397/33889
ISSN: 0920-5071
DOI: 10.1163/156939311794827140
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