Acta Optica Sinica, Volume. 42, Issue 14, 1405003(2022)
Ultra-Broadband Tunable Filter Based on Cascaded Chirped Subwavelength Grating Assisted Contra-Directional Coupler
[1] Zhu L, Sun J Q, Zhou Y. Silicon-based wavelength division multiplexer using asymmetric grating-assisted couplers[J]. Optics Express, 27, 23234-23249(2019).
[2] Tian Y, Qiu J F, Liu C et al. Compact polarization beam splitter with a high extinction ratio over S + C + L band[J]. Optics Express, 27, 999-1009(2019).
[3] Xu L H, Wang Y, Mao D et al. Ultra-broadband and compact two-mode multiplexer based on subwavelength-grating-slot-assisted adiabatic coupler for the silicon-on-insulator platform[J]. Journal of Lightwave Technology, 37, 5790-5800(2019).
[4] Song W G, Li H M, Gao S L et al. Subwavelength self-imaging in cascaded waveguide arrays[J]. Advanced Photonics, 2, 036001(2020).
[5] Zhang C L, Cai C, Liu K et al. Ultracompact refractive index sensor based on integrated optical waveguide trench coupler[J]. Acta Optica Sinica, 40, 2413001(2020).
[6] Chen Y T, Qiu J F, Dong Z L et al. Inverse design and demonstration of vertical couplers[J]. Acta Optica Sinica, 41, 1713001(2021).
[7] Rahim A, Hermans A, Wohlfeil B et al. Taking silicon photonics modulators to a higher performance level: state-of-the-art and a review of new technologies[J]. Advanced Photonics, 3, 024003(2021).
[8] Li S Q, Chen W W, Wang P J et al. Bandwidth-tunable optical passband filter based on graphene-silicon waveguide[J]. Optics Communications, 426, 206-211(2018).
[9] Dai T G, Wang G C, Guo X Q et al. Scalable bandwidth-tunable micro-ring filter based on multi-channel-spectrum combination[J]. IEEE Photonics Technology Letters, 30, 1044-1047(2018).
[10] Qiu H Q, Zhou F, Qie J R et al. A continuously tunable sub-gigahertz microwave photonic bandpass filter based on an ultra-high-Q silicon microring resonator[J]. Journal of Lightwave Technology, 36, 4312-4318(2018).
[11] Orlandi P, Ferrari C, Strain M J et al. Reconfigurable silicon filter with continuous bandwidth tunability[J]. Optics Letters, 37, 3669-3671(2012).
[12] Yang H M, Li J, Zheng P F et al. A stopband and passband switchable microwave photonic filter based on integrated dual ring coupled Mach-Zehnder interferometer[J]. IEEE Photonics Journal, 11, 5502608(2019).
[13] Jiang J F, Qiu H Y, Wang G C et al. Broadband tunable filter based on the loop of multimode Bragg grating[J]. Optics Express, 26, 559-566(2018).
[14] Boroojerdi M T, Ménard M, Kirk A G. Wavelength tunable integrated add-drop filter with 10.6 nm bandwidth adjustability[J]. Optics Express, 24, 22043-22050(2016).
[15] Yun H, Hammood M, Lin S et al. Broadband flat-top SOI add-drop filters using apodized sub-wavelength grating contradirectional couplers[J]. Optics Letters, 44, 4929-4932(2019).
[16] Hammood M, Mistry A, Yun H et al. Broadband, silicon photonics, optical add-drop filters with 3 dB bandwidths up to 11 THz[J]. Optics Letters, 46, 2738-2741(2021).
[17] Sun L, Zhang Y, He Y et al. Subwavelength structured silicon waveguides and photonic devices[J]. Nanophotonics, 9, 1321-1340(2020).
[18] Naghdi B, Chen L R. Silicon photonic contradirectional couplers using subwavelength grating waveguides[J]. Optics Express, 24, 23429-23438(2016).
[19] Johnson M, Thompson M G, Sahin D. Low-loss, low-crosstalk waveguide crossing for scalable integrated silicon photonics applications[J]. Optics Express, 28, 12498-12507(2020).
[20] Qiu H Y, Jiang J F, Hu T et al. Silicon add-drop filter based on multimode Bragg sidewall gratings and adiabatic couplers[J]. Journal of Lightwave Technology, 35, 1705-1709(2017).
Get Citation
Copy Citation Text
Shasha Liao, Hang Bao, Yuting Feng, Cong Huang, Wuhao Zhang, Shuai Zhao, Zhenwei Liu. Ultra-Broadband Tunable Filter Based on Cascaded Chirped Subwavelength Grating Assisted Contra-Directional Coupler[J]. Acta Optica Sinica, 2022, 42(14): 1405003
Category: Diffraction and Gratings
Received: Jan. 10, 2022
Accepted: Jan. 27, 2022
Published Online: Jul. 15, 2022
The Author Email: Liao Shasha (liaoss@cqupt.edu.cn)