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Investigation of the optical properties of special single-mode fibers with large fundamental mode area


V.E. Ustimchik – Post-graduate Student, Moscow Institute of Physics and Technology, Engineer, Kotelnikov IRE RAS. E-mail: Yu.K. Chamorovskii – Ph.D. (Phys.-Math.), Leading Researcher, Kotelnikov IRE RAS V.N. Filippov – Ph.D. (Phys.-Math.), Researcher, Optoelectronic Research Center, Tampere University of Technology, Finland S.A. Nikitov – Dr.Sc. (Phys.-Math.), Corresponding Member of RAS, Acting Director, Head of laboratory, Kotelnikov IRE RAS

This paper presents the results of experimental and theoretical study of two type single-mode optical fiber properties – tapered double-clad optical fiber with a core diameter of 100 microns and cylindrical fiber with W-refractive index profile with a core diameter of 50 microns weakly sensitive to macro bends. Such fibers are characterized by a record large effective area of the fundamental mode and can be advantageously used in high power laser systems with the aim of lowering the non-linear effects threshold.


  1. Encyclopedia of Laser Physics and Technology. URL:
  2. Nicholson J.W. et al. Spatially and spectrally resolved imaging of modal content in large-mode-area fibers. Opt. Express 16. 2008. R. 7233‑7243.


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