Athermal synchronization of laser source with WDM filter in a silicon photonics platform
© 2017 Author(s). In an optical interconnect circuit, microring resonators (MRRs) are commonly used in wavelength division multiplexing systems. To make the MRR and laser synchronized, the resonance wavelength of the MRR needs to be thermally controlled, and the power consumption becomes significant...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing
2021
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| Online Access: | https://hdl.handle.net/1721.1/135712 |
| _version_ | 1826192436261552128 |
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| author | Li, Nanxi Su, Zhan Purnawirman Salih Magden, E Poulton, Christopher V Ruocco, Alfonso Singh, Neetesh Byrd, Matthew J Bradley, Jonathan DB Leake, Gerald Watts, Michael R |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Li, Nanxi Su, Zhan Purnawirman Salih Magden, E Poulton, Christopher V Ruocco, Alfonso Singh, Neetesh Byrd, Matthew J Bradley, Jonathan DB Leake, Gerald Watts, Michael R |
| author_sort | Li, Nanxi |
| collection | MIT |
| description | © 2017 Author(s). In an optical interconnect circuit, microring resonators (MRRs) are commonly used in wavelength division multiplexing systems. To make the MRR and laser synchronized, the resonance wavelength of the MRR needs to be thermally controlled, and the power consumption becomes significant with a high-channel count. Here, we demonstrate an athermally synchronized rare-earth-doped laser and MRR. The laser comprises a Si3N4 based cavity covered with erbium-doped Al2O3 to provide gain. The low thermo-optic coefficient of Al2O3 and Si3N4 and the comparable thermal shift of the effective index in the laser and microring cross-sections enable lasing and resonance wavelength synchronization over a wide range of temperatures. The power difference between matched and unmatched channels remains greater than 15 dB from 20 to 50 °C due to a synchronized wavelength shift of 0.02 nm/°C. The athermal synchronization approach reported here is not limited to microring filters but can be applied to any Si3N4 filter with integrated lasers using rare earth ion doped Al2O3 as a gain medium to achieve system-level temperature control free operation. |
| first_indexed | 2024-09-23T09:12:50Z |
| format | Article |
| id | mit-1721.1/135712 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:12:50Z |
| publishDate | 2021 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1357122023-02-22T20:57:37Z Athermal synchronization of laser source with WDM filter in a silicon photonics platform Li, Nanxi Su, Zhan Purnawirman Salih Magden, E Poulton, Christopher V Ruocco, Alfonso Singh, Neetesh Byrd, Matthew J Bradley, Jonathan DB Leake, Gerald Watts, Michael R Massachusetts Institute of Technology. Research Laboratory of Electronics © 2017 Author(s). In an optical interconnect circuit, microring resonators (MRRs) are commonly used in wavelength division multiplexing systems. To make the MRR and laser synchronized, the resonance wavelength of the MRR needs to be thermally controlled, and the power consumption becomes significant with a high-channel count. Here, we demonstrate an athermally synchronized rare-earth-doped laser and MRR. The laser comprises a Si3N4 based cavity covered with erbium-doped Al2O3 to provide gain. The low thermo-optic coefficient of Al2O3 and Si3N4 and the comparable thermal shift of the effective index in the laser and microring cross-sections enable lasing and resonance wavelength synchronization over a wide range of temperatures. The power difference between matched and unmatched channels remains greater than 15 dB from 20 to 50 °C due to a synchronized wavelength shift of 0.02 nm/°C. The athermal synchronization approach reported here is not limited to microring filters but can be applied to any Si3N4 filter with integrated lasers using rare earth ion doped Al2O3 as a gain medium to achieve system-level temperature control free operation. 2021-10-27T20:28:57Z 2021-10-27T20:28:57Z 2017 2019-07-16T13:57:25Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/135712 en 10.1063/1.4984022 Applied Physics Letters Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf AIP Publishing American Institute of Physics (AIP) |
| spellingShingle | Li, Nanxi Su, Zhan Purnawirman Salih Magden, E Poulton, Christopher V Ruocco, Alfonso Singh, Neetesh Byrd, Matthew J Bradley, Jonathan DB Leake, Gerald Watts, Michael R Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title | Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title_full | Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title_fullStr | Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title_full_unstemmed | Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title_short | Athermal synchronization of laser source with WDM filter in a silicon photonics platform |
| title_sort | athermal synchronization of laser source with wdm filter in a silicon photonics platform |
| url | https://hdl.handle.net/1721.1/135712 |
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