Recent Advances in Metamaterial Integrated Photonics

Cheben, Pavel; Čtyroký, Jiřı́; Melati, Daniele; Grinberg, Yuri; Ortega‐Moñux, Alejandro; Wangüemert‐Pérez, J. Gonzalo; Molina-Fernández, Í.; Velasco, Aitor V.; Herrero-Bermello, Alaine; Lapointe, J.; Janz, Siegfried; Schmid, Jens H.; Xu, Dan‐Xia; Dezfouli, Mohsen Kamandar; Wang, S.; Vachon, Martin; Vivien, Laurent; Ye, W. N.; Litvik, Jan; Dado, Milan; Halir, Robert; Alonso‐Ramos, Carlos; Benedikovič, Daniel; Luque‐González, José Manuel; González-Andrade, David; Pereira-Martín, Daniel

doi:10.1109/ipcon.2019.8908505

Cited by 2 publications

(2 citation statements)

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“…To achieve efficient fiber-chip edge coupling, high-performance and broadband SWG edge couplers were included in the input and output facets of the chip. [30] For experimental characterization, we employed two tunable lasers to sweep the 1420 -1505 nm and 1505 -1680 nm wavelength ranges, respectively. The lasers were connected to an optical stage to control the polarization state of incident light precisely.…”

Section: Fabrication and Experimental Characterizationmentioning

confidence: 99%

“…[27] These metamaterials consist of a periodic lattice of different dielectric materials spaced at a distance shorter than half the effective wavelength of the propagating light, which allows tailoring refractive index, dispersion, and anisotropy by modifying the geometrical parameters. [28] In addition to the demonstration of numerous devices with unprecedented performance, [10,[29][30][31][32][33] SWGs have also been successfully used to engineer different power splitters to achieve state-of-the-art performance. [34][35][36][37][38][39][40][41] As an illustrative example, ultra-broadband SWG MMIs, [36] compact polarization-independent three-guide SWG directional couplers, [32] and high-performance SWG multimode Y-junctions [42] have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

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Y-junction beamsplitter engineered through subwavelength metamaterials

Cabo

González-Andrade

Cheben

et al. 2021

Integrated Optics: Design, Devices, Systems and Applications VI

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Power splitters play a crucial role in virtually all photonic circuits, enabling precise control of on-chip signal distribution. However, state-of-the-art solutions typically present trade-offs in terms of loss, bandwidth, and fabrication robustness, especially when targeting multimode operation. Here, we present a novel multimode 3-dB power splitter based on a symmetric Y-junction assisted by subwavelength grating metamaterials. The inclusion of the metamaterial structure circumvents the practical limitations of conventional Y-junction tips and realizes smooth modal transitions. Simulations for a standard 220-nm-thick silicon-on-insulator platform predict minimal excess loss (< 0.2 dB) for the fundamental and the first-order transverse-electric modes over an ultra-broad 700 nm bandwidth (1300 -2000 nm). For the fundamental transverse-magnetic mode, losses are less than 0.3 dB in the 1300 -1800 nm range. Experimental measurements validate these predictions in the 1430 -1630 nm wavelength range, demonstrating losses < 0.4 dB for all three modes, even in the presence of fabrication deviations of up to ±10 nm. We believe that this device is suitable for the implementation of advanced photonic systems requiring high-performance distribution of optical signals.Received: ((will be filled in by the editorial staff))Revised: ((will be filled in by the editorial staff))

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Section: Fabrication and Experimental Characterizationmentioning

confidence: 99%