Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Broad bandwidth waveguide polarizer via grating mediated mode conversion

Not Accessible

Your library or personal account may give you access

Abstract

A polarization beam splitter (PBS) based on a four-layer slab waveguide is proposed, where a sub-wavelength grating is embedded between the waveguide core and the cladding. This grating not only affords Bragg momentum to tune the propagation constant of guiding modes but also converts the forward zero-order waveguide mode to the backward first one for a specific polarization. Thus, the incident light with polarization that satisfies the phase-matching condition is highly reflected in the waveguide, while other light with orthogonal polarization keeps intact and passes through it efficiently. Numerical simulations show that one can make the compact PBS for both polarizations with an extinction ratio higher than 35 dB, a waveband larger than 80 nm, a grating period tolerance of 20 nm, and a waveguide height tolerance of 80 nm. The revealed mode conversion mechanism via the sub-wavelength grating enriches the design of PBSs for integrated silicon waveguide chips.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Compact polarization beam splitter assisted by subwavelength grating in triple-waveguide directional coupler

Tianye Huang, Yuan Xie, Yiheng Wu, Zhuo Cheng, Shuwen Zeng, and Perry Shum Ping
Appl. Opt. 58(9) 2264-2268 (2019)

Compact polarization beam splitter with a high extinction ratio over S + C + L band

Ye Tian, Jifang Qiu, Chang Liu, Shenghao Tian, Zhuili Huang, and Jian Wu
Opt. Express 27(2) 999-1009 (2019)

On-chip polarization-division multiplexing link assisted with triple-waveguide couplers

Shuangye Xu, Jinzhu Hu, Hanyu Zhang, Siqiang Mao, and Weifeng Jiang
J. Opt. Soc. Am. B 39(4) 1111-1117 (2022)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica 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 Optica member, or as an authorized user of your institution.

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

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved