Thin TiO2 core and electro-optic polymer cladding waveguide modulators

Feng Qiu; Andrew M. Spring; Feng Yu; Isao Aoki; Akira Otomo; Shiyoshi Yokoyama

doi:10.1063/1.4809818

Thin TiO₂ core and electro-optic polymer cladding waveguide modulators

Feng Qiu, Andrew M. Spring, Feng Yu, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama

Department of Advanced Device Materials

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

25 Citations (Scopus)

Abstract

In this letter, we have fabricated a thin TiO₂ core and electro-optic (EO) polymer cladding derived rib-waveguide and demonstrated its optical modulation at 1550 nm with a V_πL figure of merit of 3.3 V cm. We utilized the high refractive index TiO₂ to confine a large fraction of light in the relatively low refractive index EO polymer layer. Furthermore, this TiO₂ core enables the modulator to be constituted without a transparent top cladding and also can increase the EO activity to a much higher level. As a result, the waveguide has an enhanced in-device r ₃₃, corresponding to a V_πL of 1.65 V cm in a push-pull Mach-Zehnder interferometer structure.

Original language	English
Article number	233504
Journal	Applied Physics Letters
Volume	102
Issue number	23
DOIs	https://doi.org/10.1063/1.4809818
Publication status	Published - Jun 10 2013

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4809818

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title = "Thin TiO2 core and electro-optic polymer cladding waveguide modulators",

abstract = "In this letter, we have fabricated a thin TiO2 core and electro-optic (EO) polymer cladding derived rib-waveguide and demonstrated its optical modulation at 1550 nm with a VπL figure of merit of 3.3 V cm. We utilized the high refractive index TiO2 to confine a large fraction of light in the relatively low refractive index EO polymer layer. Furthermore, this TiO2 core enables the modulator to be constituted without a transparent top cladding and also can increase the EO activity to a much higher level. As a result, the waveguide has an enhanced in-device r 33, corresponding to a VπL of 1.65 V cm in a push-pull Mach-Zehnder interferometer structure.",

author = "Feng Qiu and Spring, {Andrew M.} and Feng Yu and Isao Aoki and Akira Otomo and Shiyoshi Yokoyama",

note = "Funding Information: This work was supported by Nano-Macro Materials, Devices and Systems Research Alliance, the Cooperative Research Program of “Network Joint Research Center for Materials and Devices” of the Ministry of Education, Culture, Sports, Science and Technology, Japan. This work was also partially executed under the Commissioned Research of National Institute of Information and Communications Technology (NICT).",

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doi = "10.1063/1.4809818",

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T1 - Thin TiO2 core and electro-optic polymer cladding waveguide modulators

AU - Qiu, Feng

AU - Spring, Andrew M.

AU - Yu, Feng

AU - Aoki, Isao

AU - Otomo, Akira

AU - Yokoyama, Shiyoshi

N1 - Funding Information: This work was supported by Nano-Macro Materials, Devices and Systems Research Alliance, the Cooperative Research Program of “Network Joint Research Center for Materials and Devices” of the Ministry of Education, Culture, Sports, Science and Technology, Japan. This work was also partially executed under the Commissioned Research of National Institute of Information and Communications Technology (NICT).

PY - 2013/6/10

Y1 - 2013/6/10

N2 - In this letter, we have fabricated a thin TiO2 core and electro-optic (EO) polymer cladding derived rib-waveguide and demonstrated its optical modulation at 1550 nm with a VπL figure of merit of 3.3 V cm. We utilized the high refractive index TiO2 to confine a large fraction of light in the relatively low refractive index EO polymer layer. Furthermore, this TiO2 core enables the modulator to be constituted without a transparent top cladding and also can increase the EO activity to a much higher level. As a result, the waveguide has an enhanced in-device r 33, corresponding to a VπL of 1.65 V cm in a push-pull Mach-Zehnder interferometer structure.

AB - In this letter, we have fabricated a thin TiO2 core and electro-optic (EO) polymer cladding derived rib-waveguide and demonstrated its optical modulation at 1550 nm with a VπL figure of merit of 3.3 V cm. We utilized the high refractive index TiO2 to confine a large fraction of light in the relatively low refractive index EO polymer layer. Furthermore, this TiO2 core enables the modulator to be constituted without a transparent top cladding and also can increase the EO activity to a much higher level. As a result, the waveguide has an enhanced in-device r 33, corresponding to a VπL of 1.65 V cm in a push-pull Mach-Zehnder interferometer structure.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Thin TiO₂ core and electro-optic polymer cladding waveguide modulators

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