Abstract

We have studied theoretically reflecting and transmitting properties of Bragg multihelicoidal spun fibers, in which refractive index distribution features $l$ helical branches and possesses an $l$-fold symmetry in the transverse cross section. It is shown that for a special choice of the profile function modulation, such fibers in certain spectral ranges have the property to change the topological charge of the incoming Gaussian beam in the reflected field by $l$ units. This property could be used for narrowband generation of optical vortices (OVs) from Gaussian beams and for changing the topological charge of incoming OVs.

© 2013 Optical Society of America

Generation of optical vortices in spun multihelicoidal optical fibers

Constantine N. Alexeyev
Appl. Opt. 51(25) 6125-6129 (2012)

Topological activity in Bragg elliptical twisted fibers

Constantine N. Alexeyev, Tatyana A. Fadeyeva, Boris P. Lapin, and Maxim A. Yavorsky
Appl. Opt. 51(10) C7-C12 (2012)

Generation and conversion of optical vortices in long-period twisted elliptical fibers

Constantine N. Alexeyev, Tatiana A. Fadeyeva, Boris P. Lapin, and Maxim A. Yavorsky
Appl. Opt. 51(10) C193-C197 (2012)

Optical vortices routing in coupled elliptical spun fibers

Constantine N. Alexeyev, Tatiana A. Fadeyeva, Yurii A. Fridman, and Maxim A. Yavorsky
Appl. Opt. 51(10) C17-C21 (2012)

Optical vortices in twisted elliptical optical fibers with torsional stress

Constantine Alexeyev, Elena Barshak, Yurii Fridman, and Maxim Yavorsky
Appl. Opt. 51(10) C163-C169 (2012)