[10p-C212-1~18] 3.13 Silicon photonics, Photonics-electronics convergence, Optical control

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

[10p-C212-17] Evaluation of Dispersion in TFLN Ring Waveguides for Optical Frequency Comb Generation

〇Shunsuke Sakamoto¹, Shouzi Hachuda¹, Yuma Arakawa¹, Toshihiko Baba¹ (1.Yokohama Nat`l Univ.)

Keywords:

thin film lithium niobate,optical frequency comb,dispersion

To generate optical frequency combs using thin-film lithium niobate (TFLN) ring resonators, we evaluated group velocity dispersion characteristics from resonance spectra. While anomalous dispersion close to zero is required for Kerr soliton generation, we confirmed that increasing the waveguide width shifts the dispersion toward the anomalous region. Designing the width to 1200–1300 nm successfully yielded the target dispersion of -50 to 0 fs²/mm