Abstract

The polarization splitter-rotator (PSR) plays a significant role in telecom, Datacom, and quantum circuits to meet significant requirements for polarization processing and multiplexing. We design an ultracompact PSR based on a silicon asymmetrical directional coupler (ADC). One waveguide of the ADC is gradually etched in two levels along the coupling region and the S-bend. A trapezoidal taper on the top of the dual-etched waveguide is first formed to satisfy the phase-matching condition for the TM-TE mode conversion, such that the TM mode is cross-coupled from the input waveguide without etching. Then, the etching width gradually increases in the S-bend and the following to achieve a single-mode waveguide for further removal of the residual TM mode. In this way, a high extinction ratio can be achieved for the polarization mode splitting in an ultracompact silicon ADC. For the designed PSR with a total length of about 24 µm, the simulation results reveal that the minimum extinction ratio is greater than 30, 20, or 15 dB within the bandwidth of 33, 100, or 150 nm, respectively, while the maximum polarization conversion loss is less than 0.4, 0.9, or 1 dB.

© 2020 Optical Society of America

Full Article  |  PDF Article

Corrections

Changjian Xie, Xihua Zou, Peixuan Li, Lianshan Yan, and Wei Pan, "Ultracompact silicon polarization splitter-rotator using dual-etched and tapered coupler: publisher’s note," Appl. Opt. 59, 11273-11273 (2020)
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-59-36-11273

8 December 2020: A correction was made to the Funding section.


More Like This
Ultra-broadband silicon polarization splitter-rotator based on the multi-mode waveguide

Hongnan Xu and Yaocheng Shi
Opt. Express 25(15) 18485-18491 (2017)

Fabrication tolerant and broadband polarization splitter and rotator based on a taper-etched directional coupler

Yule Xiong, Dan-Xia Xu, Jens H. Schmid, Pavel Cheben, Siegfried Janz, and Winnie N. Ye
Opt. Express 22(14) 17458-17465 (2014)

Ultracompact polarization splitter–rotator based on an asymmetric directional coupler

Yonghao Fei, Libin Zhang, Tongtong Cao, Yanmei Cao, and Shaowu Chen
Appl. Opt. 51(34) 8257-8261 (2012)

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

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

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

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

Tables (3)

You do not have subscription access to this journal. Article tables 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 (6)

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

Metrics

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