Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2502.10941 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916617354477568 |
|---|---|
| author | Wang, Yuanlei Wang, Ze Lao, Chenghao Xu, Tianyu Cheng, Yinke Xie, Zhenyu Wang, Junqi Luo, Haoyang Zhou, Xin Ni, Bo Zhu, Kaixuan Liu, Yanwu Jin, Xing Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Gong, Qihuang Li, Bei-Bei Zhang, Fangxing Xiao, Yun-Feng Yang, Qi-Fan |
| author_facet | Wang, Yuanlei Wang, Ze Lao, Chenghao Xu, Tianyu Cheng, Yinke Xie, Zhenyu Wang, Junqi Luo, Haoyang Zhou, Xin Ni, Bo Zhu, Kaixuan Liu, Yanwu Jin, Xing Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Gong, Qihuang Li, Bei-Bei Zhang, Fangxing Xiao, Yun-Feng Yang, Qi-Fan |
| contents | Soliton microcombs generated in nonlinear microresonators facilitate the photonic integration of timing, frequency synthesis, and astronomical calibration functionalities. For these applications, low-repetition-rate soliton microcombs are essential as they establish a coherent link between optical and microwave signals. However, the required pump power typically scales with the inverse of the repetition rate, and the device footprint scales with the inverse of square of the repetition rate, rendering low-repetition-rate soliton microcombs challenging to integrate within photonic circuits. This study designs and fabricates silicon nitride microresonators on 4-inch wafers with highly compact form factors. The resonator geometries are engineered from ring to finger and spiral shapes to enhance integration density while attaining quality factors over 10^7. Driven directly by an integrated laser, soliton microcombs with repetition rates below 10 GHz are demonstrated via turnkey initiation. The phase noise performance of the synthesized microwave signals reaches -130 dBc/Hz at 100 kHz offset frequency for 10 GHz carrier frequencies. This work enables the high-density integration of soliton microcombs for chip-based microwave photonics and spectroscopy applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_10941 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Compact Turnkey Soliton Microcombs at Microwave Rates via Wafer-Scale Fabrication Wang, Yuanlei Wang, Ze Lao, Chenghao Xu, Tianyu Cheng, Yinke Xie, Zhenyu Wang, Junqi Luo, Haoyang Zhou, Xin Ni, Bo Zhu, Kaixuan Liu, Yanwu Jin, Xing Wang, Min Liu, Jian-Fei Cao, Xuening Wang, Ting Gong, Qihuang Li, Bei-Bei Zhang, Fangxing Xiao, Yun-Feng Yang, Qi-Fan Optics Soliton microcombs generated in nonlinear microresonators facilitate the photonic integration of timing, frequency synthesis, and astronomical calibration functionalities. For these applications, low-repetition-rate soliton microcombs are essential as they establish a coherent link between optical and microwave signals. However, the required pump power typically scales with the inverse of the repetition rate, and the device footprint scales with the inverse of square of the repetition rate, rendering low-repetition-rate soliton microcombs challenging to integrate within photonic circuits. This study designs and fabricates silicon nitride microresonators on 4-inch wafers with highly compact form factors. The resonator geometries are engineered from ring to finger and spiral shapes to enhance integration density while attaining quality factors over 10^7. Driven directly by an integrated laser, soliton microcombs with repetition rates below 10 GHz are demonstrated via turnkey initiation. The phase noise performance of the synthesized microwave signals reaches -130 dBc/Hz at 100 kHz offset frequency for 10 GHz carrier frequencies. This work enables the high-density integration of soliton microcombs for chip-based microwave photonics and spectroscopy applications. |
| title | Compact Turnkey Soliton Microcombs at Microwave Rates via Wafer-Scale Fabrication |
| topic | Optics |
| url | https://arxiv.org/abs/2502.10941 |