Abstract

A TE-pass polarizer based on multiple hybrid plasmonic waveguides (HPWs) is proposed, where the polarizer section consists of four symmetrically placed HPWs and a single-mode silicon waveguide in between. Owing to the strong polarization-dependent absorption loss of the multiple HPWs, the unwanted TM polarized light is strongly attenuated while TE polarized light passes through with little loss. In addition, the multimode interference (MMI) effect is further utilized to strip out TM mode, resulting in more compact device size. To improve the extinction ratio (ER) and operating bandwidth (OBW) of the device, a three-stage cascaded scheme is utilized. Results show that a compact device with a length of ${\sim}{{26}}\;{{\unicode{x00B5}{\rm m}}}$, an ultra-high ER of over 60 dB, and a low insertion loss (IL) of 0.15 dB is obtained at the wavelength of 1.55 µm, with a broad OBW of over 240 nm for an ${\rm{ER}} \gt {{40}}\;{\rm{dB}}$. Compared with the recently reported silicon TE-pass polarizers, the present device shows better performance in terms of ER and bandwidth with a comparable device footprint.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Ultra-broadband TE-pass polarizer based on hybrid plasmonic-assisted contra-directional couplers

Zhengying Xu and Xiaohan Sun
J. Opt. Soc. Am. B 37(2) 251-256 (2020)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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 (2)

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