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Pal, S.S. and Mondal, S.K. and Kumbhakar, D. and Kumar, R and Akula, Aparna and Ghosh, Ripul and Bhatnagar, Randhir (2014) Optical fiber antenna generating spiral beam shapes. Applied Physics Letters, 104 (3). 031105. ISSN Print : 0003-6951, Online : 1077-3118