[1] Eckstein J N, Ferguson A I, Hänsch T W. High-resolution two-photon spectroscopy with picosecond light pulses[J]. Physical Review Letters, 40, 847-850(1978).

[2] Udem T, Holzwarth R, Hänsch T W. Optical frequency metrology[J]. Nature, 416, 233-237(2002).

[3] Herr T, Brasch V, Jost J D et al. Temporal solitons in optical microresonators[J]. Nature Photonics, 8, 145-152(2014).

[4] Suh M G, Yang Q F, Yang K Y et al. Microresonator soliton dual-comb spectroscopy[J]. Science, 354, 600-603(2016).

[5] Schliesser A, Brehm M, Keilmann F et al. Frequency-comb infrared spectrometer for rapid, remote chemical sensing[J]. Optics Express, 13, 9029-9038(2005).

[6] Coluccelli N, Cassinerio M, Redding B et al. The optical frequency comb fibre spectrometer[J]. Nature Communications, 7, 12995(2016).

[7] Hou F Y, Zhang X B, Wang Z J et al. Magnetic fluid infiltrated microbottle resonator sensor with axial confined mode[J]. IEEE Photonics Journal, 12, 20019205(2020).

[8] Pfeifle J, Brasch V, Lauermann M et al. Coherent terabit communications with microresonator Kerr frequency combs[J]. Nature Photonics, 8, 375-380(2014).

[9] Pavlov N G, Lihachev G, Koptyaev S et al. Soliton dual frequency combs in crystalline microresonators[J]. Optics Letters, 42, 514-517(2017).

[10] Marin-Palomo P, Kemal J N, Karpov M et al. Microresonator-based solitons for massively parallel coherent optical communications[J]. Nature, 546, 274-279(2017).

[11] Jones D J, Diddams S A, Ranka J K et al. Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis[J]. Science, 288, 635-639(2000).

[12] Cundiff S T, Ye J. Colloquium: femtosecond optical frequency combs[J]. Reviews of Modern Physics, 75, 325-342(2003).

[13] Del’Haye P, Schliesser A, Arcizet O et al. Optical frequency comb generation from a monolithic microresonator[J]. Nature, 450, 1214-1217(2007).

[14] Chembo Y K, Strekalov D V, Yu N. Spectrum and dynamics of optical frequency combs generated with monolithic whispering gallery mode resonators[J]. Physical Review Letters, 104, 103902(2010).

[15] Kippenberg T J, Holzwarth R, Diddams S A. Microresonator-based optical frequency combs[J]. Science, 332, 555-559(2011).

[16] Levy J S, Gondarenko A, Foster M A et al. CMOS-compatible multiple-wavelength oscillator for on-chip optical interconnects[J]. Nature Photonics, 4, 37-40(2010).

[17] Chembo Y K, Yu N. Modal expansion approach to optical-frequency-comb generation with monolithic whispering-gallery-mode resonators[J]. Physical Review A, 82, 033801(2010).

[18] Del’Haye P, Herr T, Gavartin E et al. Octave spanning tunable frequency comb from a microresonator[J]. Physical Review Letters, 107, 063901(2011).

[19] Papp S B. Del’Haye P, Diddams S A. Mechanical control of a microrod-resonator optical frequency comb[J]. Physical Review X, 3, 2358-2367(2012).

[20] Jung H, Fong K Y, Xiong C et al. Electrical tuning and switching of an optical frequency comb generated in aluminum nitride microring resonators[J]. Optics Letters, 39, 84-87(2013).

[21] Miller S A, Okawachi Y, Ramelow S et al. Tunable frequency combs based on dual microring resonators[J]. Optics Express, 23, 21527-21540(2015).

[22] Guo X, Zou C L, Jung H et al. Efficient generation of a near-visible frequency comb via Cherenkov-like radiation from a Kerr microcomb[J]. Physical Review Applied, 10, 014012(2018).

[23] Yu S P, Briles T C, Moille G T et al. Tuning Kerr-soliton frequency combs to atomic resonances[J]. Physical Review Applied, 11, 044017(2019).

[24] Shu F J, Zhang P J, Qian Y J et al. A mechanically tuned Kerr comb in a dispersion-engineered silica microbubble resonator[J]. Science China Physics, Mechanics & Astronomy, 63, 254211(2019).

[25] Lu Q J, Liao J, Liu S et al. Precise measurement of micro bubble resonator thickness by internal aerostatic pressure sensing[J]. Optics Express, 24, 20855-20861(2016).

[26] Zhao G M, Özdemir Ş K, Wang T et al. Raman lasing and Fano lineshapes in a packaged fiber-coupled whispering-gallery-mode microresonator[J]. Science Bulletin, 62, 875-878(2017).

[27] Zhou Z H, Zou C L, Chen Y et al. Broadband tuning of the optical and mechanical modes in hollow bottle-like microresonators[J]. Optics Express, 25, 4046-4053(2017).

[28] Xue X X, Xuan Y, Wang P H et al. Tunable frequency comb generation from a microring with a thermal heater. [C]∥CLEO: Science and Innovations 2014, June 8-13, 2014, San Jose, California. Washington, D.C.: OSA, SF1I, 8(2014).

[29] Chen X, Fu L, Lu Q et al. Packaged droplet microresonator for thermal sensing with high sensitivity[J]. Sensors, 18, 3881(2018).

[30] Vitullo D L P, Zaki S, Gardosi G et al. Tunable SNAP microresonators via internal ohmic heating[J]. Optics Letters, 43, 4316-4319(2018).

[31] Liu X L, Lu Q J, Fu L et al. Coupled-mode induced transparency via ohmic heating in a single polydimethylsiloxane-coated microbubble resonator[J]. Optics Express, 28, 10705-10713(2020).

[32] Kippenberg T J, Spillane S M, Vahala K J. Kerr-nonlinearity optical parametric oscillation in an ultrahigh-Q toroid microcavity[J]. Physical Review Letters, 93, 083904(2004).

[33] Agha I H, Okawachi Y, Foster M A et al. Four-wave-mixing parametric oscillations in dispersion-compensated high-Q silica microspheres[J]. Physical Review A, 76, 043837(2007).

[34] Agha I H, Okawachi Y, Gaeta A L. Theoretical and experimental investigation of broadband cascaded four-wave mixing in high-Q microspheres[J]. Optics Express, 17, 16209-16215(2009).

[35] Lu Q J, Liu S, Wu X et al. Stimulated Brillouin laser and frequency comb generation in high-Q microbubble resonators[J]. Optics Letters, 41, 1736-1739(2016).

[36] Zhang X L, Zhao Y J. Research progress of microresonator-based optical frequency combs[J]. Acta Optica Sinica, 41, 0823014(2021).

[37] Sumetsky M, Dulashko Y, Windeler R S. Super free spectral range tunable optical microbubble resonator[J]. Optics Letters, 35, 1866-1868(2010).

[38] Fujii S, Tanabe T. Dispersion engineering and measurement of whispering gallery mode microresonator for Kerr frequency comb generation[J]. Nanophotonics, 9, 1087-1104(2020).

[40] Li M, Wu X, Liu L Y et al. Kerr parametric oscillations and frequency comb generation from dispersion compensated silica micro-bubble resonators[J]. Optics Express, 21, 16908-16913(2013).

[41] Liu S J, Zheng Y L, Chen X F. Nonlinear frequency conversion in lithium niobate thin films[J]. Acta Optica Sinica, 41, 0823013(2021).

[42] Lu Q J, Chen X G, Liu X L et al. Tunable optofluidic liquid metal core microbubble resonator[J]. Optics Express, 28, 2201-2209(2020).