| Citation: | WU Jia-jun, WANG Xuan-qi, ZHANG Cheng-yu, LI Chen-hong, ZHONG Shan, KANG Song-bai. Packaging of low-environmental-sensitivity wgm resonators for practical applications[J]. Chinese Optics. doi: 10.37188/CO.EN-2026-0003
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We presents a novel prism-coupled packaging strategy for WGM Resonators. Utilizing an all-solid-state optical adhesive process combined with active temperature control and hermetic sealing, the proposed package exhibits exceptional long-term stability and environmental robustness. The standalone WGMR module was fully characterized, demonstrating a temperature sensitivity below 10−7/°C and a low-frequency Z-axis acceleration sensitivity below 10−10/g. Furthermore, the application of this module was explored as a stable optical frequency reference and a nonlinear photonic platform, achieving a short-term frequency stability of 2×10−13 at 2 ms and generating Kerr soliton microcombs with a pump power of 100 mW. This compact, robust, and stable packaging solution significantly enhances the immediate applicability of WGMRs in real-world applications such as narrow-linewidth lasers and portable microcombs, thereby facilitating the transition of WGMR technology from laboratory research to practical deployment.
| [1] |
KONDRATIEV N M, LOBANOV V E, SHITIKOV A E, et al. Recent advances in laser self-injection locking to high-Q microresonators[J]. Frontiers of Physics, 2023, 18(2): 21305.
|
| [2] |
GUGLIANDOLO G, TABANDEH S, ROSSO L, et al. Whispering gallery mode resonators for precision temperature metrology applications[J]. Sensors, 2021, 21(8): 2844. doi: 10.3390/s21082844
|
| [3] |
VOGT D W, JONES A H, LEONHARDT R. Thermal tuning of silicon terahertz whispering-gallery mode resonators[J]. Applied Physics Letters, 2018, 113(1): 011101.
|
| [4] |
KANG ZH F, CHEN T C, ZHANG J, et al. Packaging of WGM resonator coupled with tapered fiber for various application scenarios[J]. Optics & Laser Technology, 2024, 177: 111127. doi: 10.1016/j.optlastec.2024.111127
|
| [5] |
ZHANG F X, HUANGFU SH N, JI SH Q, et al. High robustness, billion Q packaged microcavity devices for soliton microcombs[J]. Chinese Optics Letters, 2025, 23(2): 022601.
|
| [6] |
WANG X ZH, NIEDERMAYER G, LIN G B, et al. Polarization-maintaining property of tapered polarization-maintaining fibers[J]. Applied Optics, 2013, 52(8): 1550-1554.
|
| [7] |
CHRISTENSEN J T, AZEEM F, TRAINOR L S, et al. Distance calibration via Newton’s rings in yttrium lithium fluoride whispering gallery mode resonators[J]. Optics Letters, 2022, 47(23): 6053-6056.
|
| [8] |
BERNESCHI S, FARNESI D, FRIGENTI G, et al. From laboratory to prototype: the last-mile issue in whispering gallery mode resonator-based devices[J]. Optical Materials, 2025, 167: 117248.
|
| [9] |
BAUMGARTEL L, THOMPSON R, STREKALOV D, et al. Whispering gallery mode resonators as optical reference cavities[C]. Proceedings of the 2011 Joint Conference of the IEEE International Frequency Control and the European Frequency and Time Forum (FCS) Proceedings, IEEE, 2011: 1-4.
|
| [10] |
ILCHENKO V S, SAVCHENKOV A A, MATSKO A B, et al. Generation of Kerr frequency combs in a sapphire whispering gallery mode microresonator[J]. Optical Engineering, 2014, 53(12): 122607.
|
| [11] |
ZHANG W, BAYNES F, DIDDAMS S A, et al. Microrod optical frequency reference in the ambient environment[J]. Physical Review Applied, 2019, 12(2): 024010.
|
| [12] |
SAVCHENKOV A A, ELIYAHU D, HEIST B, et al. On acceleration sensitivity of 2 μm whispering gallery mode-based semiconductor self-injection locked laser[J]. Applied Optics, 2019, 58(9): 2138-2145.
|
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