Abstract

The polarization dependent nature of a central waveguide in a three-core directional coupler plays a key role in splitting polarized guided modes onto different layers of 3-D silicon photonic circuits. Here, we investigate the dependence of beam splitting characteristics on the central hybrid plasmonic waveguides. We used three Si-based hybrid long-range surface plasmon polariton (LR-SPP) waveguides: a Si–M–Si, a Si–SiO2–M–Si, and a Si–SiO2–M–SiO2–Si waveguide, where M is a metal or an emerging plasmonic material. Numerical simulations revealed that the device using a symmetric LR-SPP waveguide structure provided the most satisfactory optical characteristics. On the entire C-band, the extinction ratios for 3-D and 2-D polarization beam splitting were larger than 20 dB and the insertion losses were less than 0.25 dB. Based on theoretical investigations, we suggest some design guidance for the proposed three-core-based 3-D polarization beam splitters using a Si-based hybrid LR-SPP waveguide.

© 2014 IEEE

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