Mode composition of holey fibers with a large seven-element core
P. M. AgruzovA. F. Ioffe Physicotechnical Institute, St. PetersburgА. С. КозловA. F. Ioffe Physicotechnical Institute, St. PetersburgМ. П. ПетровA. F. Ioffe Physicotechnical Institute, St. PetersburgKonstantin V. DukelskiiScientific Research and Technological Institute of Optical Material#N# Science, S. I. Vavilov State Optical Institute All-Russia Science#N# Center, St. PetersburgA. V. KomarovScientific Research and Technological Institute of Optical Material#N# Science, S. I. Vavilov State Optical Institute All-Russia Science#N# Center, St. PetersburgEgishe V. Ter-NersesyantsScientific Research and Technological Institute of Optical Material#N# Science, S. I. Vavilov State Optical Institute All-Russia Science#N# Center, St. PetersburgA. V. KhokhlovScientific Research and Technological Institute of Optical Material#N# Science, S. I. Vavilov State Optical Institute All-Russia Science#N# Center, St. PetersburgV. S. ShevandinScientific Research and Technological Institute of Optical Material#N# Science, S. I. Vavilov State Optical Institute All-Russia Science#N# Center, St. Petersburg
ABI
Аннотация
An experimental study of the mode composition of radiation propagating along the core of holey fibers based on quartz glass has been carried out. The core is formed by replacing the seven central elements in the polycapillary hexagonal assembly by a single rod, and this makes it possible to increase the size of the core relative to the external diameter of the fiber. It is shown that a single-mode regime can be achieved in practice when the concentration of air in the cladding is large by comparison with the result of a theoretical analysis.
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