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dc.contributor.authorKamakshi K.-
dc.contributor.authorRastogi, Vipul K.-
dc.contributor.authorKumar A.-
dc.identifier.citationOptical Fiber Technology (2013), 19(4): 325-329-
dc.description.abstractWe present a novel co-axial dual core large-mode-area (LMA) fiber design for refractive index sensing. In a dual-core fiber there is resonant coupling between the two cores, which is strongly affected by the refractive index (RI) of the outermost region. The transmittance of the fiber, therefore, varies sharply with the refractive index of surrounding medium. This characteristic of the proposed structure has been utilized to design a RI sensor. We have analyzed the structure by using the transfer matrix method. Our numerical results show that the proposed sensor is highly sensitive with the resolution of 2.0 × 10-6 around nex = 1.44376. Effect of design parameters on sensitivity of the proposed sensor has also been investigated. © 2013 Elsevier Inc. All rights reserved.-
dc.publisherAcademic Press Inc.-
dc.relation.ispartofOptical Fiber Technology-
dc.subjectDual-core fiber-
dc.subjectLarge-mode-area fiber-
dc.subjectLeakage loss-
dc.subjectRefractive index sensor-
dc.subjectResonant coupling-
dc.titleDesign and analysis of a refractive index sensor based on dual-core large-mode-area fiber-
dc.affiliationKamakshi, K., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, India-
dc.affiliationRastogi, V., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, India-
dc.affiliationKumar, A., Department of Applied Physics, Delhi Technological University, New Delhi, India-
dc.description.fundingOne of the authors (K. Kamakshi) acknowledges the financial support provided by Indian Institute of Technology, Roorkee, Ministry of Human Resources and Development (MHRD) Government of India. This work has been partially supported by the UK–India Education and Research Initiative (UKIERI) major award on “Application specific microstructured optical fibers”. We also acknowledge help of our student Seema in carrying out some of the calculations.-
dc.description.correspondingauthorKamakshi, K.; Department of Physics, Indian Institute of Technology Roorkee, Roorkee, India; email:
Appears in Collections:Journal Publications [PH]

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