[1] Sato K I. Realization and application of large-scale fast optical circuit switch for data center networking[J]. Journal of Lightwave Technology, 36, 1411-1419(2018).

[2] Seok T J, Quack N, Han S Y et al. Large-scale broadband digital silicon photonic switches with vertical adiabatic couplers[J]. Optica, 3, 64-70(2016).

[3] Sharma S, Kohli N, Brière J et al. Integrated 1×3 MEMS silicon nitride photonics switch[J]. Optics Express, 30, 22200-22220(2022).

[4] Wan J, Guo M R, Zhang W et al. N×N optofluidic switch array with pneumatic actuation[J]. Acta Optica Sinica, 42, 2213001(2022).

[5] Wan J, Yuan W Z, Chen Y J et al. 1×5 microfluidic optical switch using double drives[J]. Journal of Modern Optics, 68, 1251-1258(2021).

[6] Sun J, Wu Y D, An J M et al. Polymer thermo-optic switch with low-power consumption based on suspended waveguide[J]. Chinese Journal of Lasers, 47, 0301008(2020).

[7] Song L J, Chen T N, Liu W X et al. Toward calibration-free Mach-Zehnder switches for next-generation silicon photonics[J]. Photonics Research, 10, 793-801(2022).

[8] Chen S T, Shi Y C, He S L et al. Low-loss and broadband 2×2 silicon thermo-optic Mach-Zehnder switch with bent directional couplers[J]. Optics Letters, 41, 836-839(2016).

[9] Kita T, Mendez-Astudillo M. Ultrafast silicon MZI optical switch with periodic electrodes and integrated heat sink[J]. Journal of Lightwave Technology, 39, 5054-5060(2021).

[10] Fang Q, Song J F, Liow T Y et al. Ultralow power silicon photonics thermo-optic switch with suspended phase arms[J]. IEEE Photonics Technology Letters, 23, 525-527(2011).

[11] Lu Z Q, Murray K, Jayatilleka H et al. Michelson interferometer thermo-optic switch on SOI with a 50-µW power consumption[J]. IEEE Photonics Technology Letters, 27, 2319-2322(2015).

[12] Celo D, Goodwill D J, Jiang J et al. Thermo-optic silicon photonics with low power and extreme resilience to over-drive[C], 26-27(2016).

[13] Zhao S Y, Lu L J, Zhou L J et al. 16×16 silicon Mach-Zehnder interferometer switch actuated with waveguide microheaters[J]. Photonics Research, 4, 202-207(2016).

[14] Tanizawa K, Suzuki K, Toyama M et al. Ultra-compact 32×32 strictly-non-blocking Si-wire optical switch with fan-out LGA interposer[J]. Optics Express, 23, 17599-17606(2015).

[15] Liu Y, Guan H, Wang Z et al. A novel blocking state of silicon electro-optical switch based on free carrier absorption effect[J]. IEEE Photonics Technology Letters, 30, 1056-1059(2018).

[16] Lu L J, Zhao S Y, Zhou L J et al. 16×16 non-blocking silicon optical switch based on electro-optic Mach-Zehnder interferometers[J]. Optics Express, 24, 9295-9307(2016).

[17] Guo Z Z, Lu L J, Zhou L J et al. 16×16 silicon optical switch based on dual-ring-assisted Mach-Zehnder interferometers[J]. Journal of Lightwave Technology, 36, 225-232(2018).

[18] Bao P, Cheng Q X, Wei J L et al. Harnessing self-heating effect for ultralow-crosstalk electro-optic Mach-Zehnder switches[J]. Photonics Research, 11, 1757-1769(2023).

[19] Qiao L, Tang W J, Chu T. 32×32 silicon electro-optic switch with built-in monitors and balanced-status units[J]. Scientific Reports, 7, 42306(2017).

[20] Chen Z Q, Wei M L, Luo Y et al. Efficient and compact sol-gel TiO2 thermo-optic microring resonator modulator[J]. Optical Materials Express, 12, 4061-4071(2022).

[21] Liu X Y, Ying P, Zhong X M et al. Highly efficient thermo-optic tunable micro-ring resonator based on an LNOI platform[J]. Optics Letters, 45, 6318-6321(2020).

[22] Yu H Y, Qiu F. Compact thermo-optic modulator based on a titanium dioxide micro-ring resonator[J]. Optics Letters, 47, 2093-2096(2022).

[23] Li X, Gao W, Lu L J et al. Ultra-low-loss multi-layer 8×8 microring optical switch[J]. Photonics Research, 11, 712-723(2023).

[24] Zhu Q M, Jiang X H, Yu Y P et al. Automated wavelength alignment in a 4×4 silicon thermo-optic switch based on dual-ring resonators[J]. IEEE Photonics Journal, 10, 6600311(2018).

[25] Guo P X, Zhou J H, Hou W G et al. On-chip optical switching network architecture based on hybrid wavelength and mode division multiplexing[J]. Acta Optica Sinica, 43, 1313001(2023).