Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32735
Title: Design of a dual-core dual-hole fiber for hydrostatic pressure sensing
Authors: Chen, D
Hu, G
Tse, MLV
Tam, HY 
Keywords: Dual-core
Dual-hole
Mode coupling
Pressure sensor
Issue Date: 2012
Publisher: North-Holland
Source: Optics communications, 2012, v. 285, no. 10-11, p. 2615-2619 How to cite?
Journal: Optics communications 
Abstract: We propose a novel dual-core dual-hole fiber (DCDHF) for hydrostatic pressure sensing. Two fiber cores and two air holes are employed in the cross-section of the DCDHF. The mode coupling between two fiber cores of the DCDHF is sensitive to the pressure-induced index change which ensures the detection of the pressure applied to the DCDHF. Two large air holes are employed to enhance the pressure-induced index change for the DCDHF which essentially provides a built-in transducing mechanism to enhance the sensitivity for the DCDHF-based pressure sensor. The DCDHF-based pressure sensor is simply formed by splicing a segment of DCDHF to two segments of single mode fibers and its operation principle is introduced in details. Simulations show that there is a linear relationship between the pressure untilized on the DCDHF and the wavelength shift of the output spectrum at one fiber core of the DCDHF with a fixed length when the polarized light is injected into another fiber core of the DCDHF. DCDHFs with different structure parameters for pressure sensing are also investigated.
URI: http://hdl.handle.net/10397/32735
ISSN: 0030-4018
EISSN: 1873-0310
DOI: 10.1016/j.optcom.2012.01.069
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