Abstract

We numerically study the diffraction properties of a parity-time (PT) symmetric transmission grating, which operates through a limited number of guiding modes. The interferometric operation is altered by the introduction of balanced gain and loss leading, for example, to efficient switching around the spontaneous symmetry breaking point. Furthermore, we examine the influence of the longitudinal reflections, which are not common in previous PT structures. In addition, we separately tailor the periodicities of gain and loss, so that the device remains PT symmetric. However, this gives a new way to control the mode merging phenomenon, as we obtain interactions between previously distinct modes.

© 2015 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Beam splitting of low-contrast binary gratings under second Bragg angle incidence

Jiangjun Zheng, Changhe Zhou, Bo Wang, and Jijun Feng
J. Opt. Soc. Am. A 25(5) 1075-1083 (2008)

Two-dimensional grating for narrow-band filtering with large angular tolerances

Evgeny Popov, Anne-Laure Fehrembach, Yoann Brûlé, Guillaume Demésy, and Philippe Boyer
Opt. Express 24(13) 14974-14985 (2016)

Electrical tunability due to coalescence of exceptional points in parity-time symmetric waveguides

Jin Wang, Hui Yuan Dong, Raymond P. H. Wu, T. C. Mok, and Kin Hung Fung
Opt. Lett. 42(3) 535-538 (2017)

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 (10)

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

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