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Subwavelength index engineered integrated photonic devices

Abstract : By locally engineering the refractive index of silicon by forming a pattern of holes at the subwavelength scale, it is possible to manipulate the flow of light in silicon photonic waveguides [1]. The subwavelength engineered structures are likely to become key building blocks for the next generation of integrated photonic circuits. Here we report our advances in development of subwavelength engineered metamaterial structures for integrated photonics, including grating waveguide filters for near- and mid-infrared operation, highefficiency fiber-chip couplers, broadband surface grating couplers and ultra-broadband nanophotonic beam splitters, implemented in silicon-on-insulator waveguides [2-5]. REFERENCES [1] R. Halir et al., “Waveguide sub-wavelength structures: a review of principles and applications,” Laser and Photon. Rev. 9, 2015, pp. 25-49. [2] P. Cheben et al., “Broadband polarization independent nanophotonic coupler for silicon waveguides with ultra-high efficiency,” Optics Express 23, 2015, pp. 22553-22563. [3] D. Benedikovic et al., “Subwavelength index engineered surface grating coupler with sub-decibel efficiency for 220-nm silicon-on-insulator waveguides,” Optics Express, vol. 23, 2015, pp. 22628-22635. [4] A. Sanchez et al., “Broadband fiber-chip zero-order surface grating coupler with 0.4 dB efficiency,” Optics Letters 41, 2016, pp. 3013-3017. [5] R. Halir et al., “Ultra-broadband nanophotonic beamsplitter using an anisotropic sub-wavelength metamaterial,” arXiv:1606.03750v2 (2016).
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Contributor : Daniel Benedikovic <>
Submitted on : Sunday, September 13, 2020 - 5:08:02 PM
Last modification on : Friday, July 2, 2021 - 3:46:00 AM


  • HAL Id : hal-02937354, version 1


P Cheben, D Benedikovic, C Ramos, J Schmid, R Halir, et al.. Subwavelength index engineered integrated photonic devices. The 16th International Conference on Optical Communications & Networks, Aug 2017, Wuzhen, China. ⟨hal-02937354⟩



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