Abstract
We propose an approach to generating widely tunable and highly coherent optical frequency combs (OFCs) using an optoelectronic oscillator (OEO) with lithium-niobate-on-insulator (LNOI) cascaded modulators. In the proposed system, an OEO operates as a pure microwave source, which ensures high coherence of the generated OFCs. The experimental results reveal a frequency tuning range of 6-18 GHz and a phase noise of -130.4 dBc/Hz@10 kHz of the microwave signals generated by the OEO. Based on this LNOI-empowered OEO, OFCs with tunable spacing from 6 GHz to 18 GHz and over 15 comb lines are generated. Besides, a tunable center wavelength of 1530-1570 nm of the generated OFCs is also demonstrated.
| Original language | English |
|---|---|
| Title of host publication | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Edition | 2025 |
| ISBN (Electronic) | 9798331525347 |
| DOIs | |
| Publication status | Published - 2025 |
| Event | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 - Wuxi, China Duration: 23 Jul 2025 → 26 Jul 2025 |
Conference
| Conference | 2025 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications, IMWS-AMP 2025 |
|---|---|
| Country/Territory | China |
| City | Wuxi |
| Period | 23/07/25 → 26/07/25 |
Keywords
- lithium-niobate-on-insulator
- optical frequency comb
- optoelectronic oscillator
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