All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal
By changing the symmetry of a photonic crystal (PC) with a rectangular lattice to straighten one of the isofrequency contours, the PC shows an all-angle quasi-self-collimation (quasi-SC) effect. To investigate the straightness of the isofrequency contour and the quasi-SC effect, we propose a straigh...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2015-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7039191/ |
| _version_ | 1818877313462304768 |
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| author | Ming Li Wei Li Haiyang Huang Jing Wang You Li Aimin Wu Zhen Sheng Xi Wang Shichang Zou Fuwan Gan |
| author_facet | Ming Li Wei Li Haiyang Huang Jing Wang You Li Aimin Wu Zhen Sheng Xi Wang Shichang Zou Fuwan Gan |
| author_sort | Ming Li |
| collection | DOAJ |
| description | By changing the symmetry of a photonic crystal (PC) with a rectangular lattice to straighten one of the isofrequency contours, the PC shows an all-angle quasi-self-collimation (quasi-SC) effect. To investigate the straightness of the isofrequency contour and the quasi-SC effect, we propose a straightness factor L based on the method of least squares. With L ≤ L<sub>0</sub> (L<sub>0</sub> = 0.01 is the critical value), the isofrequency contour is sufficiently straight to induce the quasi-SC effect with the beam quasi-collimating in the structure. Furthermore, the efficiency of light coupling to the quasi-SC PC is studied and can be greatly improved by applying a carefully designed antireflection structure. This quasi-SC effect of the PC and the coupling structure may see applications in novel optical devices and photonic circuits. |
| first_indexed | 2024-12-19T13:56:18Z |
| format | Article |
| id | doaj.art-cea8f219111b4877b6a983ab9a5b156b |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-19T13:56:18Z |
| publishDate | 2015-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-cea8f219111b4877b6a983ab9a5b156b2022-12-21T20:18:36ZengIEEEIEEE Photonics Journal1943-06552015-01-01711810.1109/JPHOT.2015.23994337039191All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic CrystalMing Li0Wei Li1Haiyang Huang2Jing Wang3You Li4Aimin Wu5Zhen Sheng6Xi Wang7Shichang Zou8Fuwan Gan9State Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaState Key Lab. of Functional Mater. for Inf., Shanghai Inst. of Microsyst. & Inf. Technol., Shanghai, ChinaBy changing the symmetry of a photonic crystal (PC) with a rectangular lattice to straighten one of the isofrequency contours, the PC shows an all-angle quasi-self-collimation (quasi-SC) effect. To investigate the straightness of the isofrequency contour and the quasi-SC effect, we propose a straightness factor L based on the method of least squares. With L ≤ L<sub>0</sub> (L<sub>0</sub> = 0.01 is the critical value), the isofrequency contour is sufficiently straight to induce the quasi-SC effect with the beam quasi-collimating in the structure. Furthermore, the efficiency of light coupling to the quasi-SC PC is studied and can be greatly improved by applying a carefully designed antireflection structure. This quasi-SC effect of the PC and the coupling structure may see applications in novel optical devices and photonic circuits.https://ieeexplore.ieee.org/document/7039191/coupling efficiencyphotonic crystalsquasi-self-collimationantireflection layer |
| spellingShingle | Ming Li Wei Li Haiyang Huang Jing Wang You Li Aimin Wu Zhen Sheng Xi Wang Shichang Zou Fuwan Gan All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal IEEE Photonics Journal coupling efficiency photonic crystals quasi-self-collimation antireflection layer |
| title | All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal |
| title_full | All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal |
| title_fullStr | All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal |
| title_full_unstemmed | All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal |
| title_short | All-Angle Quasi-Self-Collimation Effect in a Rod-Type Silicon Photonic Crystal |
| title_sort | all angle quasi self collimation effect in a rod type silicon photonic crystal |
| topic | coupling efficiency photonic crystals quasi-self-collimation antireflection layer |
| url | https://ieeexplore.ieee.org/document/7039191/ |
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