Abstract
In this paper, a double-layer approach is proposed to design a compact four states polarization-independent grating coupler (GC). The proposed polarization-independent GC is designed to couple a 700 nm polarized light propagated in a 150 nm Gallium Phosphide (GaP) waveguide to a polarization-maintaining fiber. The double-layer approach is based on the deposition of GaP gratings designed to couple the transverse magnetic (TM) light over the GaP gratings designed to couple the transverse electric (TE) light. The two layers are separated by a Hydrogen silsesquioxane (HSQ) with an optimum thickness of 20 nm. The grating periods and the fill factors of the two layers are optimized to achieve maximum possible coupling efficiency (CE). The proposed method resulted in relatively high CEs of 39.2, 31.1, and 23.3% for the TE, TM, and 45°/-45° linearly polarized light, respectively. The polarization-dependent loss (PDL) is 1 dB, 1.26 dB, and 2.26 dB corresponding to TE-TM, TM-45°/-45°, and TE-45°/-45°, respectively. The performance of the double-layer approach is numerically verified by the two-dimensional (2D) finite element algorithm (FEM) using COMSOL software. The proposed method suggests a novel and simple approach to design a compact four states polarization-independent GC that could be used in integrated (on-chip) photonic communication circuits.
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Alonso-Ramos, C., Zavargo-Peche, L., Ortega-Moñux, A., Halir, R., Molina-Fernández, I., Cheben, P.: Polarization-independent grating coupler for micrometric silicon rib waveguides. Opt. Lett. 37, 3663–3665 (2012). https://doi.org/10.1364/OL.37.003663
Bonod, N., Neauport, J.: Diffraction gratings: from principles to applications in high-intensity lasers. Adv. Opt. Photon. 8, 156–199 (2016). https://doi.org/10.1364/AOP.8.000156
Chen, X., Tsang, H.K.: Polarization-independent grating couplers for silicon-on-insulator nanophotonic waveguides. Opt. Lett. 36, 796–798 (2011). https://doi.org/10.1364/OL.36.000796
Chrostowski, L., Hochberg, M.: Silicon Photonics Design: From Devices to Systems. Cambridge University Press, Cambridge (2015)
Hajim, K., Tawfiq, S., Meki, A.: Quantum cryptography and a quantum key distribution protocol. Iraqi J. Laser. 3, 1–10 (2004)
Hao, T., Sánchez-Postigo, A., Cheben, P., Ortega-Moñux, A., Ye, W.N.: Dual-band polarization-independent subwavelength grating coupler for wavelength demultiplexing. IEEE Photon. Technol. Lett. 32, 1163–1166 (2020). https://doi.org/10.1109/LPT.2020.3014640
Khaleel, F.A., Tawfeeq, S.K.: The spontaneous emission performance of a quantum emitter coupled to a hybrid plasmonic waveguide with specified output polarization for on-chip plasmonic single-photon source. Photon. Nanostruct. Fundam. Appl. 45, 100925 (2021). https://doi.org/10.1016/j.photonics.2021.100925
Larrea, R., Gutierrez, A.M., Sanchis, P.: Design method for high performance grating couplers in photonic integrated circuits. Opt. Quant. Electron. 50, 341 (2018). https://doi.org/10.1007/s11082-018-1596-8
Purwaha, N., Atieh, A., Ye, W.N.: Broadband and polarization flexible SOI grating coupler based on sub-wavelength gratings with low back reflections. OSA Contin. 2, 1350–1357 (2019). https://doi.org/10.1364/OSAC.2.001350
Roelkens, G., Van Thourhout, D.: Interfacing silicon nanophotonic integrated circuits and single-mode optical fibers with diffraction gratings BT - silicon photonics II: components and integration, in: D.J. Lockwood, L. Pavesi (Eds.), Springer Berlin Heidelberg, Berlin, Heidelberg, 2011: pp. 71–94. https://doi.org/10.1007/978-3-642-10506-7_3
Siampour, H., Kumar, S., Bozhevolnyi, S.I.: Nanofabrication of plasmonic circuits containing single photon sources. ACS Photon. (2017). https://doi.org/10.1021/acsphotonics.7b00374
Siampour, H., Wang, O., Zenin, V.A., Boroviks, S., Siyushev, P., Yang, Y., Davydov, V.A., Kulikova, L.F., Agafonov, V.N.: Ultrabright single-photon emission from germanium-vacancy zero-phonon lines : deterministic emitter-waveguide interfacing at plasmonic hot spots. Nanophotonics (2020). https://doi.org/10.1515/nanoph-2020-0036
Sibson, P., Kennard, J.E., Stanisic, S., Erven, C., O’Brien, J.L., Thompson, M.G.: Integrated silicon photonics for high-speed quantum key distribution. Optica. 4, 172–177 (2017). https://doi.org/10.1364/OPTICA.4.000172
Skrebergene, L.O.: Optimization and fabrication of a fiber-to-waveguide silicon-on-insulator grating coupler, NTNU, (2020)
Song, J.H., Doany, F.E., Medhin, A.K., Dupuis, N., Lee, B.G., Libsch, F.R.: Polarization-independent nonuniform grating couplers on silicon-on-insulator. Opt. Lett. 40, 3941–3944 (2015). https://doi.org/10.1364/OL.40.003941
Thorlabs: PM630-HP, Https://Www.Thorlabs.Com/Drawings/8a6d8952d7d91b79-E8731100-CF31-47F1-12A5821A0953BD9F/PM630-HP-SpecSheet.Pdf. (n.d.). https://www.thorlabs.com/thorproduct.cfm?partnumber=PM630-HP (accessed April 23, 2021)
Xiao, Z., Liow, T.-Y., Zhang, J., Silalahi, S.T.H., Shum, P., Luan, F.: Mode control in planar waveguide grating couplers with double surface corrugation. IEEE Photon. Technol. Lett. 24, 1722–1725 (2012). https://doi.org/10.1109/LPT.2012.2213300
Xu, J., Jin, X., Zhao, Y.: Apodized fully-etched surface grating coupler using subwavelength structure for standard silicon-on-insulator waveguide. Opt. Quant. Electron. 49, 158 (2017). https://doi.org/10.1007/s11082-017-0997-4
Xu, Y., Wang, F., Gao, Y., Chen, W., Chen, C., Wang, X., Yi, Y., Sun, X., Zhang, D.: Efficient polymer waveguide grating coupler with directionality enhancement. Opt. Commun. 463, 125418 (2020). https://doi.org/10.1016/j.optcom.2020.125418
Zhang, J., Yang, J., Lu, H., Wu, W., Huang, J., Chang, S.: Subwavelength TE/TM grating coupler based on silicon-on-insulator. Infrared Phys. Technol. 71, 542–546 (2015a). https://doi.org/10.1016/j.infrared.2015.06.018
Zhang, J., Yang, J., Lu, H., Wu, W., Huang, J., Chang, S.: Polarization-independent grating coupler based on silicon-on-insulator. Chin. Opt. Lett. 13, 91301 (2015b)
Zhang, J., Zhang, C., Liang, G., Yang, Y.: Simulation research of high-efficiency unidirectional vertical coupling grating couplers for optical through-silicon vias in 3D optoelectronic integrated circuits. Opt. Commun. 479, 126408 (2021). https://doi.org/10.1016/j.optcom.2020.126408
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FAK: Writing—original draft, Software, Validation. SKT: Data curation, Supervision, Conceptualization, Methodology, Writing—review & editing.
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Khaleel, F.A., Tawfeeq, S.K. Design and numerical verification of a polarization-independent grating coupler using a double-layer approach for visible wavelengths applications. Opt Quant Electron 54, 37 (2022). https://doi.org/10.1007/s11082-021-03368-y
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DOI: https://doi.org/10.1007/s11082-021-03368-y