Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing
A novel method for integration of high-performance 1-D photonic crystal nanobeam bandgap filter (1-D PC-NBF) and high-sensitivity 1-D PC nanobeam cavity sensor (1-D PC-NCS) is proposed on a monolithic silicon chip. The 1-D PC-NBF consists of a simple 1-D PC nanobeam waveguide, in which the bulk air-...
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IEEE
2016-01-01
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| author | Daquan Yang Chuan Wang Yuefeng Ji |
| author_facet | Daquan Yang Chuan Wang Yuefeng Ji |
| author_sort | Daquan Yang |
| collection | DOAJ |
| description | A novel method for integration of high-performance 1-D photonic crystal nanobeam bandgap filter (1-D PC-NBF) and high-sensitivity 1-D PC nanobeam cavity sensor (1-D PC-NCS) is proposed on a monolithic silicon chip. The 1-D PC-NBF consists of a simple 1-D PC nanobeam waveguide, in which the bulk air-hole grating radii are kept the same. The 1-D PC-NCS consists of a common 1-D PC nanobeam cavity, in which the air-hole grating radius is parabolically tapered from center to end. By using the 3-D finite-difference time-domain (3-D-FDTD) method, the proposed 1-D PC-NBF with an effective low-pass bandgap ranging from 1533 to 1785 nm (with width > 250 nm) is demonstrated, where the resonant wavelengths lying in the bandgap are not guided. Then, by connecting an additional 1-D PC-NBF to a 1-D PC-NCS in series, a transmission spectrum only containing the specific fundamental mode of the 1-D PC nanobeam cavity for sensing purposes is created, while the other high-order modes are filtered out. Moreover, the additional 1-D PC-NBF has no influence on the properties (e.g., <inline-formula> <tex-math notation="LaTeX">$Q$</tex-math></inline-formula>-factor, resonance position, and sensitivity) of the fundamental resonant mode of 1-D PC-NCS. In particular, the footprint of the proposed 1-D PC nanobeam integrated sensor is ultracompact around <inline-formula> <tex-math notation="LaTeX">$0.7\ \mu\text{m}\times 10\ \mu\text{m}$</tex-math></inline-formula>, which is improved more than three orders of magnitude compared with the integrated sensor devices based on 2-D PC. Thus, the method presented here is promising to build highly parallel integrated sensor arrays for lab-on-a-chip applications and accurate detections. |
| format | Article |
| id | doaj-art-283945baa714426aa979eae2fb0d8cf1 |
| institution | Kabale University |
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| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
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| series | IEEE Photonics Journal |
| spelling | doaj-art-283945baa714426aa979eae2fb0d8cf12025-08-20T03:32:55ZengIEEEIEEE Photonics Journal1943-06552016-01-01821810.1109/JPHOT.2016.25369427422659Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index SensingDaquan Yang0Chuan Wang1Yuefeng Ji2State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, ChinaState Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, ChinaState Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, ChinaA novel method for integration of high-performance 1-D photonic crystal nanobeam bandgap filter (1-D PC-NBF) and high-sensitivity 1-D PC nanobeam cavity sensor (1-D PC-NCS) is proposed on a monolithic silicon chip. The 1-D PC-NBF consists of a simple 1-D PC nanobeam waveguide, in which the bulk air-hole grating radii are kept the same. The 1-D PC-NCS consists of a common 1-D PC nanobeam cavity, in which the air-hole grating radius is parabolically tapered from center to end. By using the 3-D finite-difference time-domain (3-D-FDTD) method, the proposed 1-D PC-NBF with an effective low-pass bandgap ranging from 1533 to 1785 nm (with width > 250 nm) is demonstrated, where the resonant wavelengths lying in the bandgap are not guided. Then, by connecting an additional 1-D PC-NBF to a 1-D PC-NCS in series, a transmission spectrum only containing the specific fundamental mode of the 1-D PC nanobeam cavity for sensing purposes is created, while the other high-order modes are filtered out. Moreover, the additional 1-D PC-NBF has no influence on the properties (e.g., <inline-formula> <tex-math notation="LaTeX">$Q$</tex-math></inline-formula>-factor, resonance position, and sensitivity) of the fundamental resonant mode of 1-D PC-NCS. In particular, the footprint of the proposed 1-D PC nanobeam integrated sensor is ultracompact around <inline-formula> <tex-math notation="LaTeX">$0.7\ \mu\text{m}\times 10\ \mu\text{m}$</tex-math></inline-formula>, which is improved more than three orders of magnitude compared with the integrated sensor devices based on 2-D PC. Thus, the method presented here is promising to build highly parallel integrated sensor arrays for lab-on-a-chip applications and accurate detections.https://ieeexplore.ieee.org/document/7422659/Integrated nanophotonicOptical interconnectPhotonic crystals |
| spellingShingle | Daquan Yang Chuan Wang Yuefeng Ji Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing IEEE Photonics Journal Integrated nanophotonic Optical interconnect Photonic crystals |
| title | Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing |
| title_full | Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing |
| title_fullStr | Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing |
| title_full_unstemmed | Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing |
| title_short | Silicon On-Chip One-Dimensional Photonic Crystal Nanobeam Bandgap Filter Integrated With Nanobeam Cavity for Accurate Refractive Index Sensing |
| title_sort | silicon on chip one dimensional photonic crystal nanobeam bandgap filter integrated with nanobeam cavity for accurate refractive index sensing |
| topic | Integrated nanophotonic Optical interconnect Photonic crystals |
| url | https://ieeexplore.ieee.org/document/7422659/ |
| work_keys_str_mv | AT daquanyang silicononchiponedimensionalphotoniccrystalnanobeambandgapfilterintegratedwithnanobeamcavityforaccuraterefractiveindexsensing AT chuanwang silicononchiponedimensionalphotoniccrystalnanobeambandgapfilterintegratedwithnanobeamcavityforaccuraterefractiveindexsensing AT yuefengji silicononchiponedimensionalphotoniccrystalnanobeambandgapfilterintegratedwithnanobeamcavityforaccuraterefractiveindexsensing |