Abstract
Whispering-gallery-mode crystalline resonators currently maintain the best quality factor (${\rm{Q}}$) record; however, compact on-chip packaging is still a challenge, although various coupling architectures have been developed. Here, a chemical etching method is proposed to fabricate a miniaturized tapered fiber waveguide on silicon substrate. The Marangoni effect is implemented to reduce the surface roughness of the cone region. The optical loss of 0.1 dB/mm is obtained, and the ${\rm{Q}}$ of the on-chip crystalline resonator exceeds ${{1}}{{{0}}^8}$. Additionally, thermoelectric cooler (TEC) is implanted in the package to actively customize the temperature, and the temperature response of 18 pm/°C is consistent with the theoretical calculation.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Yongchao Dong, Xueying Jin, and Keyi Wang
Appl. Opt. 54(13) 4016-4022 (2015)
Ozan Aktaş and Mehmet Bayındır
Appl. Opt. 56(3) 385-390 (2017)
Yongchao Dong, Keyi Wang, and Xueying Jin
Appl. Opt. 54(2) 277-284 (2015)