Ultra-compact multilayer Si/SiO2 GRIN lens mode-size converter for coupling single-mode fiber to Si-wire waveguide

Ter Hoe Loh; Qian Wang; Jie Zhu; Keh Ting Ng; Yi Cheng Lai; Yingyan Huang; Seng Tiong Ho

doi:10.1364/OE.18.021519

Ultra-compact multilayer Si/SiO₂ GRIN lens mode-size converter for coupling single-mode fiber to Si-wire waveguide

Ter Hoe Loh^*, Qian Wang, Jie Zhu, Keh Ting Ng, Yi Cheng Lai, Yingyan Huang, Seng Tiong Ho

^*Corresponding author for this work

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

27 Scopus citations

Abstract

We report on the fabrication and experimental demonstration of optical mode size transformation between standard single-mode fiber and 0.26μm-thick Si-waveguide by 12μm-thick Si/SiO₂ multilayer on-chip GRIN lens of lengths 16μm or 24μm butt-joint to 10μm-wide terminated Siwaveguide. The overall coupling loss of the coupler was measured to be 3.45dB in which the Fresnel reflection loss is estimated to be 2dB at the GRIN-lens/air interface. The on-chip integrated GRIN lens opens up the feasibility of a low cost passive aligned fiber-pigtailed electronic-photonics integrated circuits platform.

Original language	English (US)
Pages (from-to)	21519-21533
Number of pages	15
Journal	Optics Express
Volume	18
Issue number	21
DOIs	https://doi.org/10.1364/OE.18.021519
State	Published - Oct 11 2010

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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abstract = "We report on the fabrication and experimental demonstration of optical mode size transformation between standard single-mode fiber and 0.26μm-thick Si-waveguide by 12μm-thick Si/SiO2 multilayer on-chip GRIN lens of lengths 16μm or 24μm butt-joint to 10μm-wide terminated Siwaveguide. The overall coupling loss of the coupler was measured to be 3.45dB in which the Fresnel reflection loss is estimated to be 2dB at the GRIN-lens/air interface. The on-chip integrated GRIN lens opens up the feasibility of a low cost passive aligned fiber-pigtailed electronic-photonics integrated circuits platform.",

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AU - Loh, Ter Hoe

AU - Wang, Qian

AU - Zhu, Jie

AU - Ng, Keh Ting

AU - Lai, Yi Cheng

AU - Huang, Yingyan

AU - Ho, Seng Tiong

PY - 2010/10/11

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AB - We report on the fabrication and experimental demonstration of optical mode size transformation between standard single-mode fiber and 0.26μm-thick Si-waveguide by 12μm-thick Si/SiO2 multilayer on-chip GRIN lens of lengths 16μm or 24μm butt-joint to 10μm-wide terminated Siwaveguide. The overall coupling loss of the coupler was measured to be 3.45dB in which the Fresnel reflection loss is estimated to be 2dB at the GRIN-lens/air interface. The on-chip integrated GRIN lens opens up the feasibility of a low cost passive aligned fiber-pigtailed electronic-photonics integrated circuits platform.

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Ultra-compact multilayer Si/SiO₂ GRIN lens mode-size converter for coupling single-mode fiber to Si-wire waveguide

Abstract

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