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Mid-infrared, ultra-broadband, low-loss, compact arbitrary power splitter based on adiabatic mode evolution

Mid-infrared, ultra-broadband, low-loss, compact arbitrary power splitter based on adiabatic mode evolution
Mid-infrared, ultra-broadband, low-loss, compact arbitrary power splitter based on adiabatic mode evolution

We designed and demonstrated TE-mode arbitrary power splitters based on adiabatic mode evolution. The power splitters are designed with a footprint of smaller than 12 × 2.9 μm2, fabricated on a 400-nm silicon-on-insulator platform, requiring only a single etch step. The optimization process and the conditions for arbitrary-power splitting are performed using three-dimensional-FDTD simulations. We prove this concept through the fabrication of asymmetrical adiabatic evolution-based power splitters with splitting ratios of 50:50, 60:40, and 70:30. The fabricated devices are shown to agree closely with simulation results. Broadband operation with low insertion loss of 0.11-0.6 dB is demonstrated across the 3.66-3.89 μm wavelength range (230 nm). This component has applications in a multitude of areas such as spectroscopic optical sensing and optical phased arrays photonic integrated circuits etc.

mid infrared, photonic integrated circuits, silicon photonics, Waveguides
1943-0655
1-12
Sia, Jia Xu Brian
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Wang, Wanjun
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Guo, Xin
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Zhou, Jin
614f5ebf-cf64-4299-b6d3-aee0e91eba8b
Zhang, Zecen
bfd08efc-a02b-4052-a9f7-134e20b902f7
Rouifed, Mohamed Said
d3e0b104-b14b-4b91-a767-df6a1d3d79b7
Li, Xiang
e6435800-bc30-466f-9361-ac358808d804
Qiao, Zhong Liang
c70103ef-3b61-456d-95ff-b760d74bea4f
Liu, Chong Yang
46565e0b-5d4d-407e-8d3a-ee2d344fe21a
Littlejohns, Callum
0fd6585d-030d-4d8f-a411-6fc03e083efa
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Wang, Hong
dfd0ec4f-682a-4596-a0d1-171313cc5733
Sia, Jia Xu Brian
996b6cec-fd29-4301-9eae-b8b21dbe1405
Wang, Wanjun
79108a43-c2a9-4a18-9aeb-8a9b45941dd0
Guo, Xin
14dece80-84bc-4b6d-b442-b02592976087
Zhou, Jin
614f5ebf-cf64-4299-b6d3-aee0e91eba8b
Zhang, Zecen
bfd08efc-a02b-4052-a9f7-134e20b902f7
Rouifed, Mohamed Said
d3e0b104-b14b-4b91-a767-df6a1d3d79b7
Li, Xiang
e6435800-bc30-466f-9361-ac358808d804
Qiao, Zhong Liang
c70103ef-3b61-456d-95ff-b760d74bea4f
Liu, Chong Yang
46565e0b-5d4d-407e-8d3a-ee2d344fe21a
Littlejohns, Callum
0fd6585d-030d-4d8f-a411-6fc03e083efa
Reed, Graham T.
ca08dd60-c072-4d7d-b254-75714d570139
Wang, Hong
dfd0ec4f-682a-4596-a0d1-171313cc5733

Sia, Jia Xu Brian, Wang, Wanjun, Guo, Xin, Zhou, Jin, Zhang, Zecen, Rouifed, Mohamed Said, Li, Xiang, Qiao, Zhong Liang, Liu, Chong Yang, Littlejohns, Callum, Reed, Graham T. and Wang, Hong (2019) Mid-infrared, ultra-broadband, low-loss, compact arbitrary power splitter based on adiabatic mode evolution. IEEE Photonics Journal, 11 (2), 1-12. (doi:10.1109/JPHOT.2019.2907788).

Record type: Article

Abstract

We designed and demonstrated TE-mode arbitrary power splitters based on adiabatic mode evolution. The power splitters are designed with a footprint of smaller than 12 × 2.9 μm2, fabricated on a 400-nm silicon-on-insulator platform, requiring only a single etch step. The optimization process and the conditions for arbitrary-power splitting are performed using three-dimensional-FDTD simulations. We prove this concept through the fabrication of asymmetrical adiabatic evolution-based power splitters with splitting ratios of 50:50, 60:40, and 70:30. The fabricated devices are shown to agree closely with simulation results. Broadband operation with low insertion loss of 0.11-0.6 dB is demonstrated across the 3.66-3.89 μm wavelength range (230 nm). This component has applications in a multitude of areas such as spectroscopic optical sensing and optical phased arrays photonic integrated circuits etc.

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Accepted/In Press date: 23 March 2019
e-pub ahead of print date: 11 April 2019
Published date: April 2019
Keywords: mid infrared, photonic integrated circuits, silicon photonics, Waveguides

Identifiers

Local EPrints ID: 432591
URI: https://eprints.soton.ac.uk/id/eprint/432591
ISSN: 1943-0655
PURE UUID: df40409e-6e31-4eaf-9f06-6431a80dcb81

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Date deposited: 19 Jul 2019 16:33
Last modified: 29 Nov 2019 17:32

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Contributors

Author: Jia Xu Brian Sia
Author: Wanjun Wang
Author: Xin Guo
Author: Jin Zhou
Author: Zecen Zhang
Author: Mohamed Said Rouifed
Author: Xiang Li
Author: Zhong Liang Qiao
Author: Chong Yang Liu
Author: Callum Littlejohns
Author: Graham T. Reed
Author: Hong Wang

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