Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5800
Title: Intermodal coupling of supermodes in a twincore photonic crystal fiber and its application as a pressure sensor
Authors: Liu, Z
Tse, V
Wu, C
Chen, D
Lu, C 
Tam, HY 
Keywords: Couplings
Hydrostatic pressure
Optical fiber fabrication
Photonic crystal fibers
Polarization
Pressure sensors
Issue Date: 10-Sep-2012
Publisher: Optical Society of America
Source: Optics express, 10 Sept. 2012, v. 20, no. 19, p. 21749-21757 How to cite?
Journal: Optics express 
Abstract: In this paper, we experimentally demonstrated the fabrication and hydrostatic pressure characteristics of a twin-core photonic crystal fiber (TC-PCF). Mode couplings in the TC-PCF for x- and y-polarizations were analyzed simultaneously using group effective index of guiding modes. The output spectrum of the TC-PCF was modulated due to the combined couplings of the two polarizations. To the best of our knowledge, it is the first time to measure hydrostatic pressure through the dual-polarization mode coupling in a TC-PCF. The measured sensitivity of the pressure sensor was -21pm/MPa. The length of the TC-PCF used for pressure measurement was 20cm, which is much shorter than pressure sensor based on PM-PCF, and does not require any external polarizing components, meaning that it is a good candidate for compact pressure sensor.
URI: http://hdl.handle.net/10397/5800
EISSN: 1094-4087
DOI: 10.1364/OE.20.021749
Rights: © 2012 Optical Society of America. This paper was published in Optics express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-20-19-21749. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
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