Automated tuning of a ring-assisted MZI-based interleaver for Kerr frequency combs
We demonstrate a compact ring-assisted Mach-Zehnder interferometer (RAMZI)-based silicon photonic interleaver with a 400 GHz free spectral range (FSR), featuring flat passbands exceeding a spectral range of 50 nm. Additionally, we introduce a novel, to the best of our knowledge, add-on structure and tuning method enabling automated compensation for fabrication imperfections, precise shaping of the RAMZI flat-top passbands, and alignment with Kerr comb lines. Experimental results have shown successful interleaving of eight channels of distributed-feedback (DFB) lasers as well as a 200 GHz Kerr comb, both achieving an extinction ratio of approximately 20 dB.
Authors
- Yoshitomo Okawachi (ORCID: https://orcid.org/0000-0001-9639-0549)
- Michal Lipson (ORCID: https://orcid.org/0000-0003-2903-3765)
- Swarnava Sanyal
- Alexander L. Gaeta (ORCID: https://orcid.org/0000-0001-6877-7316)
- Xiang Meng (ORCID: https://orcid.org/0000-0003-2402-6849)
- Xingchen Ji (ORCID: https://orcid.org/0000-0002-0284-0818)
- Keren Bergman (ORCID: https://orcid.org/0000-0001-8580-1728)
- Yuyang Wang (ORCID: https://orcid.org/0000-0002-4242-8879)
- Robert Parsons (ORCID: https://orcid.org/0000-0001-5141-5597)
- Songli Wang (ORCID: https://orcid.org/0009-0006-2638-0795)
Publication Details
- Journal
- Optics Letters
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1364/ol.546772
- Citations
- 2
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.42
Funders
- Defense Advanced Research Projects Agency
- Advanced Research Projects Agency - Energy