Collection Of theses on high power laser and plasma physics, 2006, 4 (1): 146, Published Online: Jun. 4, 2007  

Design guidelines and characteristics of beam-shaping microstructure optical fibers

Author Affiliations
1 National Laboratory on High Power Laser and Physics, Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China
2 Photon Craft Project, Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China
Abstract
Microstructure optical fibers with flat-top fundamental mode are first proposed by introducing a low-index inner core into the core of index-guiding microstructure optical fibers. The design guidelines and characteristics of beam-shaping microstructure optical fibers are demonstrated. The interrelationships of inner-core index with laser wavelength, air hole diameter and size of inner core are investigated. The influence of the relative size of inner core on the spatial profile of the fundamental mode is demonstrated. Moreover, sensitivity of the flat-top fundamental mode profile from the slight change of the optimum inner-core index value is studied. Starting from these results we deduce that it is possible to fabricate beam-shaping microstructure fibers with nowadays technique.

Xing-Qiang Lu, Qin-Ling Zhou, b, Jian-Rong Qiu, Cong-Shan Zhu, Dian-Yuan Fan. Design guidelines and characteristics of beam-shaping microstructure optical fibers[J]. Collection Of theses on high power laser and plasma physics, 2006, 4(1): 146.

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