Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials
An optical switch based on silicon-on-insulator (SOI) technology is proposed that works in the C-band and switches by amorphous (Am) to crystalline (Cr) and Cr-to-Am phase transitions. The optical switch integrates the functions of polarization beam splitting and mode conversion, and consists of two...
| Main Authors: | , , , , , |
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/5/320 |
| _version_ | 1797496545298350080 |
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| author | Jie He Junbo Yang Hansi Ma Xinpeng Jiang Huan Yuan Yang Yu |
| author_facet | Jie He Junbo Yang Hansi Ma Xinpeng Jiang Huan Yuan Yang Yu |
| author_sort | Jie He |
| collection | DOAJ |
| description | An optical switch based on silicon-on-insulator (SOI) technology is proposed that works in the C-band and switches by amorphous (Am) to crystalline (Cr) and Cr-to-Am phase transitions. The optical switch integrates the functions of polarization beam splitting and mode conversion, and consists of two asymmetric directional couplers (ADCs). The TM<sub>0</sub> mode is converted to the TM<sub>1</sub> mode through an asymmetric coupler to achieve the polarization splitting of the TM<sub>0</sub> mode and TE<sub>0</sub> mode. The output of the TE<sub>0</sub> mode is then controlled by Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> (GSST). When the TE<sub>0</sub> mode is input and the wavelength is 1550 nm, the insertion loss (IL) is lower than 0.62 dB and the crosstalk (<i>CT</i>) is lower than −9.88 dB for a directional coupler loaded with GSST that realizes the optical switch function in both amorphous and crystalline GSST. The extinction ratio (ER) of the two waveguides of the directional coupler is lower than −11.40 dB, simultaneously. When the TM<sub>0</sub> mode is input and the wavelength is 1550 nm, the IL is lower than 0.62 dB for a directional coupler loaded without GSST. |
| first_indexed | 2024-03-10T03:05:11Z |
| format | Article |
| id | doaj.art-f27ad6189dec4ea1865d94778c666781 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-10T03:05:11Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-f27ad6189dec4ea1865d94778c6667812023-11-23T12:40:41ZengMDPI AGPhotonics2304-67322022-05-019532010.3390/photonics9050320Design of a Multi-Functional Integrated Optical Switch Based on Phase Change MaterialsJie He0Junbo Yang1Hansi Ma2Xinpeng Jiang3Huan Yuan4Yang Yu5College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaCollege of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, ChinaAn optical switch based on silicon-on-insulator (SOI) technology is proposed that works in the C-band and switches by amorphous (Am) to crystalline (Cr) and Cr-to-Am phase transitions. The optical switch integrates the functions of polarization beam splitting and mode conversion, and consists of two asymmetric directional couplers (ADCs). The TM<sub>0</sub> mode is converted to the TM<sub>1</sub> mode through an asymmetric coupler to achieve the polarization splitting of the TM<sub>0</sub> mode and TE<sub>0</sub> mode. The output of the TE<sub>0</sub> mode is then controlled by Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> (GSST). When the TE<sub>0</sub> mode is input and the wavelength is 1550 nm, the insertion loss (IL) is lower than 0.62 dB and the crosstalk (<i>CT</i>) is lower than −9.88 dB for a directional coupler loaded with GSST that realizes the optical switch function in both amorphous and crystalline GSST. The extinction ratio (ER) of the two waveguides of the directional coupler is lower than −11.40 dB, simultaneously. When the TM<sub>0</sub> mode is input and the wavelength is 1550 nm, the IL is lower than 0.62 dB for a directional coupler loaded without GSST.https://www.mdpi.com/2304-6732/9/5/320optical switchGe<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub>directional couplersmode conversionintegrated opticstelecom C-band |
| spellingShingle | Jie He Junbo Yang Hansi Ma Xinpeng Jiang Huan Yuan Yang Yu Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials Photonics optical switch Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> directional couplers mode conversion integrated optics telecom C-band |
| title | Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials |
| title_full | Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials |
| title_fullStr | Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials |
| title_full_unstemmed | Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials |
| title_short | Design of a Multi-Functional Integrated Optical Switch Based on Phase Change Materials |
| title_sort | design of a multi functional integrated optical switch based on phase change materials |
| topic | optical switch Ge<sub>2</sub>Sb<sub>2</sub>Se<sub>4</sub>Te<sub>1</sub> directional couplers mode conversion integrated optics telecom C-band |
| url | https://www.mdpi.com/2304-6732/9/5/320 |
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