| Title: |
Integrated Passive Nonlinear Optical Isolators |
| Authors: |
White, Alexander D., Ahn, Geun Ho, Van Gasse, Kasper, Yang, Ki Youl, Chang, Lin, Bowers, John E., Vučković, Jelena |
| Publication Year: |
2022 |
| Collection: |
Physics (Other) |
| Subject Terms: |
Physics - Optics |
| More Details: |
Fiber and bulk-optical isolators are widely used to stabilize laser cavities by preventing unwanted feedback. However, their integrated counterparts have been slow to be adopted. While several strategies for on-chip optical isolation have been realized, these rely on either integration of magneto-optic materials or high frequency modulation with acousto-optic or electro-optic modulators. Here, we demonstrate an integrated approach for passively isolating a continuous wave laser using the intrinsically non-reciprocal Kerr nonlinearity in ring resonators. Using silicon nitride as a model platform, we achieve single ring isolation of 17-23dB with 1.8-5.5dB insertion loss, and a cascaded ring isolation of 35dB with 5dB insertion loss. Employing these devices, we demonstrate hybrid integration and isolation with a semi-conductor laser chip. |
| Document Type: |
Working Paper |
| DOI: |
10.1038/s41566-022-01110-y |
| Access URL: |
http://arxiv.org/abs/2206.01173 |
| Accession Number: |
edsarx.2206.01173 |
| Database: |
arXiv |
