Permanent matching of coupled optical bottle resonators with better than 0.16 GHz precision

Abstract

The fabrication precision is one of the most critical challenges on the way to the creation of practical photonic circuits composed of coupled high Q-factor microresonators. While very accurate transient tuning of microresonators based on local heating has been reported, the record precision of permanent resonance positioning achieved by post-processing is still within 1-5 GHz. Here we demonstrate two coupled bottle microresonators fabricated at the fiber surface which resonances are matched with a better than 0.16 GHz precision. This corresponds to a better than 0.17 angstrom precision in the effective fiber radius variation. The achieved fabrication precision is only limited by the resolution of our optical spectrum analyzer and can be potentially improved by an order of magnitude.

arXiv comment4 pages

References in corpus (5)

• Temporal solitons in optical microresonators
• Loss-induced suppression and revival of lasing
• Delay of light in an optical bottle resonator with nanoscale radius variation: dispersionless, broadband, and low-loss
• Surface nanoscale axial photonics: Robust fabrication of high quality factor microresonators
• Transient reconfigurable subangstrom-precise photonic circuits at the optical fiber surface

Cited by in corpus (8)

• Optical bottle microresonators
• Bottle microresonator broadband and low repetition rate frequency comb generator
• Microresonator devices lithographically introduced at the optical fiber surface
• Optical frequency combs generated mechanically
• Controlled transportation of light by light at the microscale
• Mahaux-Weidenmüller approach to cavity quantum electrodynamics and complete resonant down-conversion of the single photon frequency
• SNAP microwave optical filters
• Comprehensive fabrication of SNAP microresonators by a femtosecond laser