Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film
In this paper, we propose and demonstrate a simple chalcogenide glass (ChG) waveguide structure, which is composed of a low refractive-index strip on the surface of the planar ChG film. Theoretical analysis shows that it supports single quasi-TE mode transmission at 1.55 <inline-formula> <t...
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IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7409915/ |
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| author | Yanfen Zhai Renduo Qi Chenzhi Yuan Shuai Dong Wei Zhang Yidong Huang |
| author_facet | Yanfen Zhai Renduo Qi Chenzhi Yuan Shuai Dong Wei Zhang Yidong Huang |
| author_sort | Yanfen Zhai |
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| description | In this paper, we propose and demonstrate a simple chalcogenide glass (ChG) waveguide structure, which is composed of a low refractive-index strip on the surface of the planar ChG film. Theoretical analysis shows that it supports single quasi-TE mode transmission at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula> with high third-order nonlinearity and negligible bending loss if the bending radius is higher than 60 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. Then, the ChG waveguide is fabricated and measured. For the waveguide sample with a ChG film of 180 nm in thickness, the measured attenuation of the quasi-TE mode is 0.4 dB/cm at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. Meanwhile, the extinction ratio between the two polarization modes in the waveguide sample of 10 mm in length is higher than 25 dB over a region of 80 nm at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. For the waveguide sample with similar length and a smaller ChG film thickness (150 nm), the extinction ratio increases to 35 dB. These results demonstrate its property of low-loss single-polarization transmission. It provides a simple way to realize high-quality ChG waveguides, which have great potential on integrated nonlinear optical devices. |
| format | Article |
| id | doaj-art-c73310dcd03c4c43ba62ea7690a16b21 |
| institution | OA Journals |
| issn | 1943-0655 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-c73310dcd03c4c43ba62ea7690a16b212025-08-20T02:38:02ZengIEEEIEEE Photonics Journal1943-06552016-01-01821910.1109/JPHOT.2016.25315987409915Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass FilmYanfen Zhai0Renduo Qi1Chenzhi Yuan2Shuai Dong3Wei Zhang4Yidong Huang5Dept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaDept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaDept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaDept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaDept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaDept. of Electron. Eng., Tsinghua Univ., Beijing, ChinaIn this paper, we propose and demonstrate a simple chalcogenide glass (ChG) waveguide structure, which is composed of a low refractive-index strip on the surface of the planar ChG film. Theoretical analysis shows that it supports single quasi-TE mode transmission at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula> with high third-order nonlinearity and negligible bending loss if the bending radius is higher than 60 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. Then, the ChG waveguide is fabricated and measured. For the waveguide sample with a ChG film of 180 nm in thickness, the measured attenuation of the quasi-TE mode is 0.4 dB/cm at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. Meanwhile, the extinction ratio between the two polarization modes in the waveguide sample of 10 mm in length is higher than 25 dB over a region of 80 nm at 1.55 <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math></inline-formula>. For the waveguide sample with similar length and a smaller ChG film thickness (150 nm), the extinction ratio increases to 35 dB. These results demonstrate its property of low-loss single-polarization transmission. It provides a simple way to realize high-quality ChG waveguides, which have great potential on integrated nonlinear optical devices.https://ieeexplore.ieee.org/document/7409915/Chalcogenide glassChG waveguidesingle polarization transmission |
| spellingShingle | Yanfen Zhai Renduo Qi Chenzhi Yuan Shuai Dong Wei Zhang Yidong Huang Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film IEEE Photonics Journal Chalcogenide glass ChG waveguide single polarization transmission |
| title | Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film |
| title_full | Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film |
| title_fullStr | Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film |
| title_full_unstemmed | Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film |
| title_short | Single-Polarization Waveguiding by Low-Index Strips on the Surface of Chalcogenide Glass Film |
| title_sort | single polarization waveguiding by low index strips on the surface of chalcogenide glass film |
| topic | Chalcogenide glass ChG waveguide single polarization transmission |
| url | https://ieeexplore.ieee.org/document/7409915/ |
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