Low loss hollow-core waveguide on a silicon substrate
Optical-fiber-based, hollow-core waveguides (HCWs) have opened up many new applications in laser surgery, gas sensors, and non-linear optics. Chip-scale HCWs are desirable because they are compact, light-weight and can be integrated with other devices into systems-on-a-chip. However, their progress...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2012-07-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2012-0003 |
| _version_ | 1819121940852375552 |
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| author | Yang Weijian Ferrara James Grutter Karen Yeh Anthony Chase Chris Yue Yang Willner Alan E. Wu Ming C. Chang-Hasnain Connie J. |
| author_facet | Yang Weijian Ferrara James Grutter Karen Yeh Anthony Chase Chris Yue Yang Willner Alan E. Wu Ming C. Chang-Hasnain Connie J. |
| author_sort | Yang Weijian |
| collection | DOAJ |
| description | Optical-fiber-based, hollow-core waveguides (HCWs) have opened up many new applications in laser surgery, gas sensors, and non-linear optics. Chip-scale HCWs are desirable because they are compact, light-weight and can be integrated with other devices into systems-on-a-chip. However, their progress has been hindered by the lack of a low loss waveguide architecture. Here, a completely new waveguiding concept is demonstrated using two planar, parallel, silicon-on-insulator wafers with high-contrast subwavelength gratings to reflect light in-between. We report a record low optical loss of 0.37 dB/cm for a 9-μm waveguide, mode-matched to a single mode fiber. Two-dimensional light confinement is experimentally realized without sidewalls in the HCWs, which is promising for ultrafast sensing response with nearly instantaneous flow of gases or fluids. This unique waveguide geometry establishes an entirely new scheme for low-cost chip-scale sensor arrays and lab-on-a-chip applications. |
| first_indexed | 2024-12-22T06:44:33Z |
| format | Article |
| id | doaj.art-c443869a93074383ba0ebb7bf6201682 |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-22T06:44:33Z |
| publishDate | 2012-07-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-c443869a93074383ba0ebb7bf62016822022-12-21T18:35:19ZengDe GruyterNanophotonics2192-86062192-86142012-07-0111232910.1515/nanoph-2012-0003Low loss hollow-core waveguide on a silicon substrateYang Weijian0Ferrara James1Grutter Karen2Yeh Anthony3Chase Chris4Yue Yang5Willner Alan E.6Wu Ming C.7Chang-Hasnain Connie J.8Department of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USADepartment of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USADepartment of Electrical Engineering and Computer Sciences, University of California at Berkeley, Berkeley, CA 94720, USAOptical-fiber-based, hollow-core waveguides (HCWs) have opened up many new applications in laser surgery, gas sensors, and non-linear optics. Chip-scale HCWs are desirable because they are compact, light-weight and can be integrated with other devices into systems-on-a-chip. However, their progress has been hindered by the lack of a low loss waveguide architecture. Here, a completely new waveguiding concept is demonstrated using two planar, parallel, silicon-on-insulator wafers with high-contrast subwavelength gratings to reflect light in-between. We report a record low optical loss of 0.37 dB/cm for a 9-μm waveguide, mode-matched to a single mode fiber. Two-dimensional light confinement is experimentally realized without sidewalls in the HCWs, which is promising for ultrafast sensing response with nearly instantaneous flow of gases or fluids. This unique waveguide geometry establishes an entirely new scheme for low-cost chip-scale sensor arrays and lab-on-a-chip applications.https://doi.org/10.1515/nanoph-2012-0003hollow-core waveguidehigh-contrast subwavelength gratinggas-sensingsilicon photonics |
| spellingShingle | Yang Weijian Ferrara James Grutter Karen Yeh Anthony Chase Chris Yue Yang Willner Alan E. Wu Ming C. Chang-Hasnain Connie J. Low loss hollow-core waveguide on a silicon substrate Nanophotonics hollow-core waveguide high-contrast subwavelength grating gas-sensing silicon photonics |
| title | Low loss hollow-core waveguide on a silicon substrate |
| title_full | Low loss hollow-core waveguide on a silicon substrate |
| title_fullStr | Low loss hollow-core waveguide on a silicon substrate |
| title_full_unstemmed | Low loss hollow-core waveguide on a silicon substrate |
| title_short | Low loss hollow-core waveguide on a silicon substrate |
| title_sort | low loss hollow core waveguide on a silicon substrate |
| topic | hollow-core waveguide high-contrast subwavelength grating gas-sensing silicon photonics |
| url | https://doi.org/10.1515/nanoph-2012-0003 |
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