We present experimental and numerical results demonstrating the simultaneous frequency-selective excitation of several guided acoustic Brillouin modes in a photonic crystal fiber with a multi-scale structure design. These guided acoustic modes are identified by using a full vector finite-element model to result from elastic radial vibrations confined by the wavelength-scale air-silica microstructure. We further show the strong impact of structural irregularities of the fiber on the frequency and modal shape of these acoustic resonances. (C) 2011 Optical Society of America
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Department of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, ChattogramDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram
Zuhayer A.
Reddy M.M.
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Department of Civil Engineering, Institute of Aeronautical Engineering, Dundigal, HyderabadDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram
Reddy M.M.
Anwer T.M.K.
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Department of Physics, College of Education, Salahaddin University-Erbil, Kurdistan Region, ErbilDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram
Anwer T.M.K.
Ahammad S.H.
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Department of ECE, Koneru Lakshmaiah Education Foundation, Andhra Pradesh, VaddeswaramDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram
Ahammad S.H.
Hossain M.A.
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Institute of Theoretical Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Ruhr University Bochum, Bochum
Department of Electrical and Electronic Engineering, Jashore University of Science and Technology, JashoreDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram
Hossain M.A.
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Rashed A.N.Z.
Mahrous L.
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Electronics and Electrical Communications Engineering Department, Faculty of Electronic Engineering, Menoufia University, MenoufDepartment of Electronics and Telecommunication Engineering, Chittagong University of Engineering and Technology, Chattogram