| Citation: | WU Jia-jun, WANG Xuan-qi, ZHANG Cheng-yu, LI Chen-hong, ZHONG Shan, KANG Song-bai. Packaging of low-environmental-sensitivity whispering gallery mode resonators for practical applications[J]. Chinese Optics, 2026, 19(4): 962-970. doi: 10.37188/CO.EN-2026-0003
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We presents a novel prism-coupled packaging strategy for whispering gallery mode resonators (WGMRs). Utilizing an all-solid-state optical adhesive process combined with active temperature control and hermetic sealing, the proposed package scheme 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.
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