Efficient- and Broadband-Coupled Selective Spot-Size Converters With Damage-Free Graphene Integration Process

Rai Kou; Yuzuki Kobayashi; Kaori Warabi; Hidetaka Nishi; Tai Tsuchizawa; Tsuyoshi Yamamoto; Hirochika Nakajima; Koji Yamada

doi:10.1109/JPHOT.2014.2323297

Efficient- and Broadband-Coupled Selective Spot-Size Converters With Damage-Free Graphene Integration Process

Rai Kou^*, Yuzuki Kobayashi, Kaori Warabi, Hidetaka Nishi, Tai Tsuchizawa, Tsuyoshi Yamamoto, Hirochika Nakajima, Koji Yamada

^*Corresponding author for this work

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

5 Citations (Scopus)

Abstract

We report an enhancement of coupling efficiency between an optical fiber and graphene photonic device integrated on a silicon photonics platform. The design and optimization of selective spot-size converters (SSSCs) enables low coupling losses of 1.4 dB/facet for TE and 2.4 dB/facet for TM modes without causing damage to the graphene. In order to maximize the potential of the perfect wavelength independent response in the graphene, ultra-broad-bandwidth coupling from O- to U-bands (1300-1650 nm) is characterized. The bandwidth is over 300 nm (at 3-dB roll off) in both polarization modes. We integrated the SSSCs with a partially graphene integrated silicon-ring resonator to substantiate the wavelength response improvement by a pico-meter-order high-resolution spectroscopy.

Original language	English
Article number	6600409
Journal	IEEE Photonics Journal
Volume	6
Issue number	3
DOIs	https://doi.org/10.1109/JPHOT.2014.2323297
Publication status	Published - 2014 Jun 1

Keywords

fiber coupling
graphene integration
Photonic device integration

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics

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10.1109/JPHOT.2014.2323297

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title = "Efficient- and Broadband-Coupled Selective Spot-Size Converters With Damage-Free Graphene Integration Process",

abstract = "We report an enhancement of coupling efficiency between an optical fiber and graphene photonic device integrated on a silicon photonics platform. The design and optimization of selective spot-size converters (SSSCs) enables low coupling losses of 1.4 dB/facet for TE and 2.4 dB/facet for TM modes without causing damage to the graphene. In order to maximize the potential of the perfect wavelength independent response in the graphene, ultra-broad-bandwidth coupling from O- to U-bands (1300-1650 nm) is characterized. The bandwidth is over 300 nm (at 3-dB roll off) in both polarization modes. We integrated the SSSCs with a partially graphene integrated silicon-ring resonator to substantiate the wavelength response improvement by a pico-meter-order high-resolution spectroscopy.",

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AU - Kou, Rai

AU - Kobayashi, Yuzuki

AU - Warabi, Kaori

AU - Nishi, Hidetaka

AU - Tsuchizawa, Tai

AU - Yamamoto, Tsuyoshi

AU - Nakajima, Hirochika

AU - Yamada, Koji

PY - 2014/6/1

Y1 - 2014/6/1

N2 - We report an enhancement of coupling efficiency between an optical fiber and graphene photonic device integrated on a silicon photonics platform. The design and optimization of selective spot-size converters (SSSCs) enables low coupling losses of 1.4 dB/facet for TE and 2.4 dB/facet for TM modes without causing damage to the graphene. In order to maximize the potential of the perfect wavelength independent response in the graphene, ultra-broad-bandwidth coupling from O- to U-bands (1300-1650 nm) is characterized. The bandwidth is over 300 nm (at 3-dB roll off) in both polarization modes. We integrated the SSSCs with a partially graphene integrated silicon-ring resonator to substantiate the wavelength response improvement by a pico-meter-order high-resolution spectroscopy.

AB - We report an enhancement of coupling efficiency between an optical fiber and graphene photonic device integrated on a silicon photonics platform. The design and optimization of selective spot-size converters (SSSCs) enables low coupling losses of 1.4 dB/facet for TE and 2.4 dB/facet for TM modes without causing damage to the graphene. In order to maximize the potential of the perfect wavelength independent response in the graphene, ultra-broad-bandwidth coupling from O- to U-bands (1300-1650 nm) is characterized. The bandwidth is over 300 nm (at 3-dB roll off) in both polarization modes. We integrated the SSSCs with a partially graphene integrated silicon-ring resonator to substantiate the wavelength response improvement by a pico-meter-order high-resolution spectroscopy.

KW - fiber coupling

KW - graphene integration

KW - Photonic device integration

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Efficient- and Broadband-Coupled Selective Spot-Size Converters With Damage-Free Graphene Integration Process

Abstract

Keywords

ASJC Scopus subject areas

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