[1] Pan T H, Chen X B, Min C Y et al. Design of visible light-based internet of things terminal under ultralow illumination conditions[J]. Acta Optica Sinica, 40, 0706003(2020).

[2] Xiao G L, Xu J L, Yang H Y et al. A plasmon multi-channel wavelength-division multiplexer constructed with a nanodisk structure embedded in a rectangular metal block[J]. Acta Optica Sinica, 38, 1206006(2018).

[3] Huang Y, Zhao J Y, Wang J D et al. A real-time polarization compensation system based on wavelength-division multiplexing for optical fiber communication systems[J]. Acta Optica Sinica, 40, 1406003(2020).

[4] Fan S H, Villeneuve P R, Joannopoulos J D et al. Channel drop tunneling through localized states[J]. Physical Review Letters, 80, 960-963(1998).

[5] Kuo C W, Chang C F, Chen M H et al. A new approach of planar multi-channel wavelength division multiplexing system using asymmetric super-cell photonic crystal structures[J]. Optics Express, 15, 198-206(2007).

[6] Kim S, Park I, Lim H et al. Highly efficient photonic crystal-based multichannel drop filters of three-port system with reflection feedback[J]. Optics Express, 12, 5518-5525(2004).

[7] Song B S, Asano T, Akahane Y et al. Multichannel add/drop filter based on in-plane hetero photonic crystals[J]. Journal of Lightwave Technology, 23, 1449-1455(2005).

[8] Li C Q, Fan Q B, Lu Y et al. Multi-channel heterophotonic crystal filter[J]. Optics and Precision Engineering, 23, 2171-2177(2015).

[9] Ooka Y, Tetsumoto T, Daud N A B et al. Ultrasmall in-plane photonic crystal demultiplexers fabricated with photolithography[J]. Optics Express, 25, 1521-1528(2017).

[10] Liu L, Liao S S. Low-power active tunable microwave photonic filter using photonic crystal nanocavities[J]. IEEE Photonics Technology Letters, 32, 999-1002(2020).

[11] Babu D L, Sreenivasulu T. 4-channel DWDM demultiplexer on silicon photonic crystal slab[J]. Sādhanā, 46, 14(2021).

[12] Goel A, Pandey G. Design of broadband dispersion flattened fiber for DWDM system: performance analysis using various modulation formats[J]. Optical Fiber Technology, 42, 109-118(2018).

[13] Kundrát J, Vojtěch J, Škoda P et al. YANG/NETCONF ROADM: evolving open DWDM toward SDN applications[J]. Journal of Lightwave Technology, 36, 3105-3114(2018).

[14] Hu Y C, Chen H M, Zhou H T. Mach-Zehnder modulator based on photonic crystal and nanowire waveguide[J]. Journal of Infrared and Millimeter Waves, 38, 499-507(2019).

[15] Khoo E H, Liu A Q, Wu J H, Li j, Pinjala D. Modified step-theory for investigating mode coupling mechanism in photonic crystal waveguide taper[J]. Optics Express, 14, 6035(2006).

[16] Alpeggiani F, Andreani L C, Gerace D. Effective bichromatic potential for ultra-high Q-factor photonic crystal slab cavities[J]. Applied Physics Letters, 107, 261110(2015).

[17] Simbula A, Schatzl M, Zagaglia L et al. Realization of high-Q/V photonic crystal cavities defined by an effective Aubry-André-Harper bichromatic potential[J]. APL Photonics, 2, 056102(2017).

[18] Zhuang Y Y, Chen H M, Hu Y C et al. Hybrid demultiplexer for mode and dense wavelength division multiplexing based on photonic crystal and nanowire waveguides[J]. Journal of Modern Optics, 67, 1417-1423(2020).

[19] Wang J J, Chen L R. Low crosstalk Bragg grating/Mach-Zehnder interferometer optical add-drop multiplexer in silicon photonics[J]. Optics Express, 23, 26450-26459(2015).

[20] Li C Y, Chang C H, Lin Z G et al. Optical add/drop multiplexer for tree-based passive optical networks[J]. Optical Fiber Technology, 54, 102121(2020).

[21] Liu L, Guan H, Liu Y et al. Compact and broadband optical add-drop de-multiplexer with cascaded elliptical micro-rings on SOI[J]. IEEE Photonics Technology Letters, 31, 451-454(2019).

[22] Sato H, Miura H, Qiu F et al. Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation[J]. Optics Express, 25, 768-775(2017).

[23] Hinakura Y, Terada Y, Tamura T et al. Wide spectral characteristics of Si photonic crystal Mach-Zehnder modulator fabricated by complementary metal-oxide-semiconductor process[J]. Photonics, 3, 17(2016).

[24] Krauss T F, Rue R M D L, Brand S. Two-dimensional photonic-bandgap structures operating at near-infrared wavelengths[J]. Nature, 383, 699-702(1996).

[25] Talneau A, Agio M, Soukoulis C M et al. High-bandwidth transmission of an efficient photonic-crystal mode converter[J]. Optics Letters, 29, 1745-1747(2004).

[26] Baba T, Nguyen H C, Yazawa N et al. Slow-light Mach-Zehnder modulators based on Si photonic crystals[J]. Science and Technology of Advanced Materials, 15, 024602(2014).

[27] Kuruma K, Ota Y, Kakuda M et al. Surface-passivated high-Q GaAs photonic crystal nanocavity with quantum dots[J]. APL Photonics, 5, 046106(2020).