Broadband integrated polarization splitter and rotator using subwavelength grating claddings
Abstract
We present a broadband integrated photonic polarization splitter and rotator (PSR) using adiabatically tapered coupled waveguides with subwavelength grating (SWG) claddings. The PSR adiabatically rotates and splits the fundamental transverse-magnetic (TM 0 ) input to the fundamental transverse-electric (TE 0 ) mode in the coupler waveguide, while passing the TE 0 input through the same waveguide. The SWGs work as an anisotropic metamaterial and facilitate modal conversions, making the PSR efficient and broadband. We rigorously present our design approaches in each section and show the SWG effect by comparing with and without the SWG claddings. The coupling coefficients in each segment explicitly show a stronger coupling effect when the SWGs are included, confirmed by the coupled-mode theory simulations. The full numerical simulation shows that the SWG-PSR operates at 1500–1750 nm (≈250 nm) wavelengths with an extinction ratio larger than 20 dB, confirmed by the experiment for the 1490–1590 nm range. The insertion losses are below 1.3 dB. Since our PSR is designed based on adiabatical mode evolution, the proposed PSR is expected to be tolerant to fabrication variations and should be broadly applicable to polarization management in photonic integrated circuits.
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1910289
- Grant/Contract Number:
- NA-0003525
- Resource Type:
- Published Article
- Journal Name:
- Optics Express
- Additional Journal Information:
- Journal Name: Optics Express Journal Volume: 31 Journal Issue: 3; Journal ID: ISSN 1094-4087
- Publisher:
- Optical Society of America
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Borhan Mia, Md, Jaidye, Nafiz, Ahmed, Ishtiaque, Ahmed, Syed Z., and kim, Sangsik. Broadband integrated polarization splitter and rotator using subwavelength grating claddings. United States: N. p., 2023.
Web. doi:10.1364/OE.479195.
Borhan Mia, Md, Jaidye, Nafiz, Ahmed, Ishtiaque, Ahmed, Syed Z., & kim, Sangsik. Broadband integrated polarization splitter and rotator using subwavelength grating claddings. United States. https://doi.org/10.1364/OE.479195
Borhan Mia, Md, Jaidye, Nafiz, Ahmed, Ishtiaque, Ahmed, Syed Z., and kim, Sangsik. Fri .
"Broadband integrated polarization splitter and rotator using subwavelength grating claddings". United States. https://doi.org/10.1364/OE.479195.
@article{osti_1910289,
title = {Broadband integrated polarization splitter and rotator using subwavelength grating claddings},
author = {Borhan Mia, Md and Jaidye, Nafiz and Ahmed, Ishtiaque and Ahmed, Syed Z. and kim, Sangsik},
abstractNote = {We present a broadband integrated photonic polarization splitter and rotator (PSR) using adiabatically tapered coupled waveguides with subwavelength grating (SWG) claddings. The PSR adiabatically rotates and splits the fundamental transverse-magnetic (TM 0 ) input to the fundamental transverse-electric (TE 0 ) mode in the coupler waveguide, while passing the TE 0 input through the same waveguide. The SWGs work as an anisotropic metamaterial and facilitate modal conversions, making the PSR efficient and broadband. We rigorously present our design approaches in each section and show the SWG effect by comparing with and without the SWG claddings. The coupling coefficients in each segment explicitly show a stronger coupling effect when the SWGs are included, confirmed by the coupled-mode theory simulations. The full numerical simulation shows that the SWG-PSR operates at 1500–1750 nm (≈250 nm) wavelengths with an extinction ratio larger than 20 dB, confirmed by the experiment for the 1490–1590 nm range. The insertion losses are below 1.3 dB. Since our PSR is designed based on adiabatical mode evolution, the proposed PSR is expected to be tolerant to fabrication variations and should be broadly applicable to polarization management in photonic integrated circuits.},
doi = {10.1364/OE.479195},
journal = {Optics Express},
number = 3,
volume = 31,
place = {United States},
year = {Fri Jan 20 00:00:00 EST 2023},
month = {Fri Jan 20 00:00:00 EST 2023}
}
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