Abstract
We demonstrated an integrated high-Q cascaded Fabry–Perot (FP) resonator on lithium niobate on insulator (LNOI) implemented by multi-Sagnac loop reflectors, which was fabricated by femtosecond laser photolithography-assisted chemo-mechanical polishing (CMP). Compared with the resonator that comprised only two Sagnac loop reflectors (SLRs), there is a significant Q factor enhancement in the cascaded resonator formed by multi-SLRs. The loaded Q factor of the cascaded resonator was measured to be 1.16 × 106, a five-fold improvement compared to the state of the art on the same material platform.
| Original language | English |
|---|---|
| Pages (from-to) | 2370-2373 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 50 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1 Apr 2025 |