Abstract

We propose and theoretically demonstrate a beam shaping method using a novel all-fiber device composed of a single mode fiber, a tapered annular-core fiber, and an annular arrayed-core fiber. By using the proposed device, a circular Airy beam with outward acceleration can be generated using a Gaussian beam shaping and the autodefocusing Airy beam can be converted into an autofocusing Airy beam through a cone-frustum shaped fiber end. The properties of wave propagation in fiber and surrounding media are studied by using coupled-mode theory and angular spectrum method. The calculated results show that the output beam from the proposed device has a circular Airy-like pattern, which experiences autodefocusing (or autofocusing) during propagation, and forms a Bessel-like beam after the focal point. The tolerances of the beam generation device are discussed and we show that the focused output beam from the cone-frustum shaped fiber end can be used for multi-point trap to form an optical trap array.

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription