Submicron-scale broadband polarization beam splitter using CMOS-compatible materials

Abstract We propose a polarization beam splitter (PBS) with a footprint of only 600 × 790 nm2 operating at a wavelength of λ = 1550 nm, which is the smallest PBS ever demonstrated. This device uses CMOS-compatible materials, namely, silicon and silica. The present PBS comprises two Si waveguides wit...

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Autores principales:	Ming-Sheng Lai, Chia-Chien Huang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8d9fddac5fd44913a725a778e73c44c7
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spelling	oai:doaj.org-article:8d9fddac5fd44913a725a778e73c44c72021-12-02T11:41:22ZSubmicron-scale broadband polarization beam splitter using CMOS-compatible materials10.1038/s41598-017-05019-32045-2322https://doaj.org/article/8d9fddac5fd44913a725a778e73c44c72017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05019-3https://doaj.org/toc/2045-2322Abstract We propose a polarization beam splitter (PBS) with a footprint of only 600 × 790 nm2 operating at a wavelength of λ = 1550 nm, which is the smallest PBS ever demonstrated. This device uses CMOS-compatible materials, namely, silicon and silica. The present PBS comprises two Si waveguides with different geometrical aspect ratios adjoined side-by-side, which separates the transverse-electric (TE) and transverse-magnetic (TM) modes without relying on an additional coupling region. The designed PBS achieves a polarization extinction ratio of approximately 25 dB for both modes and insertion losses of approximately 0.87 and 1.09 dB for the TE and TM polarizations, respectively. Over a wide bandwidth of 150 nm (from λ = 1475–1625 nm), a high polarization extinction ratio (greater than 20 dB) and a low inversion loss (lower than 1.3 dB) can be obtained. The proposed PBS allows for geometrical errors of ±15 nm while maintaining a polarization extinction ratio of >20 dB and inversion losses of >1.1 and 1.3 dB for the TE and TM modes, respectively. With the submicron footprint, the reported PBS may be able to be used in high-density photonic integrated circuits and nanophotonic devices.Ming-Sheng LaiChia-Chien HuangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ming-Sheng Lai Chia-Chien Huang Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
description	Abstract We propose a polarization beam splitter (PBS) with a footprint of only 600 × 790 nm2 operating at a wavelength of λ = 1550 nm, which is the smallest PBS ever demonstrated. This device uses CMOS-compatible materials, namely, silicon and silica. The present PBS comprises two Si waveguides with different geometrical aspect ratios adjoined side-by-side, which separates the transverse-electric (TE) and transverse-magnetic (TM) modes without relying on an additional coupling region. The designed PBS achieves a polarization extinction ratio of approximately 25 dB for both modes and insertion losses of approximately 0.87 and 1.09 dB for the TE and TM polarizations, respectively. Over a wide bandwidth of 150 nm (from λ = 1475–1625 nm), a high polarization extinction ratio (greater than 20 dB) and a low inversion loss (lower than 1.3 dB) can be obtained. The proposed PBS allows for geometrical errors of ±15 nm while maintaining a polarization extinction ratio of >20 dB and inversion losses of >1.1 and 1.3 dB for the TE and TM modes, respectively. With the submicron footprint, the reported PBS may be able to be used in high-density photonic integrated circuits and nanophotonic devices.
format	article
author	Ming-Sheng Lai Chia-Chien Huang
author_facet	Ming-Sheng Lai Chia-Chien Huang
author_sort	Ming-Sheng Lai
title	Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
title_short	Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
title_full	Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
title_fullStr	Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
title_full_unstemmed	Submicron-scale broadband polarization beam splitter using CMOS-compatible materials
title_sort	submicron-scale broadband polarization beam splitter using cmos-compatible materials
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8d9fddac5fd44913a725a778e73c44c7
work_keys_str_mv	AT mingshenglai submicronscalebroadbandpolarizationbeamsplitterusingcmoscompatiblematerials AT chiachienhuang submicronscalebroadbandpolarizationbeamsplitterusingcmoscompatiblematerials
_version_	1718395410691653632

Submicron-scale broadband polarization beam splitter using CMOS-compatible materials

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