Abstract

We introduce an optical nanostructure device made of one dimensional photonic crystal (1DPC) with a graded-index defect layer, which has the ability of producing frequency dependent twisted beam shapes. The defect layer’s refractive index distribution function changes in r and φ directions in cylindrical coordinate. The rays passing through different transverse positions of an introduced structure experience different optical pathways. Thus, the defect mode has transverse dependency and twisted shapes have been generated in transmitted spectrum (phase and amplitude). The incident beam frequency is a factor that can engineer the obtained twisted beam shape. This study demonstrates the ability of the PC structures to produce controllable spiral light beam shapes.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Beam shaping using genetically optimized two-dimensional photonic crystals

Denis Gagnon, Joey Dumont, and Louis J. Dubé
J. Opt. Soc. Am. A 29(12) 2673-2678 (2012)

Self-collimation and focusing effects in zero-average index metamaterials

Rémi Pollès, Emmanuel Centeno, Julien Arlandis, and Antoine Moreau
Opt. Express 19(7) 6149-6154 (2011)

Coupled defects in one-dimensional photonic crystal films fabricated with glancing angle deposition

Matthew M. Hawkeye, Robert Joseph, Jeremy C. Sit, and Michael J. Brett
Opt. Express 18(12) 13220-13226 (2010)

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

Figures (5)

You do not have subscription access to this journal. Figure files 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

Equations (5)

You do not have subscription access to this journal. Equations 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

Metrics

You do not have subscription access to this journal. Article level metrics 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