1,721,101 research outputs found
Material and optical properties of low-temperature NH3-free PECVD SiNx layers for photonic applications
No full textData supporting the paper Dominguez Bucio, Thalia, Khokhar, Ali and Lacava, Cosimo et al. (2016) Material and optical properties of low-temperature NH3-free PECVD SiNx layers for photonic applications. Journal of Physics D: Applied Physics DOI:10.1088/1361-6463/50/2/025106</span
Dataset supporting the publication "AMI for Nonlinearity Mitigation in O-Band Transmission"
No full textThis dataset is supporting the publication:
N. Taengnoi, K. R. H. Bottrill, C. Lacava, D. J. Richardson and P. Petropoulos, "AMI for Nonlinearity Mitigation in O-Band Transmission," 2019 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, 2019, pp. 1-3.
https://doi.org/10.1364/OFC.2019.Th2A.33
The data includes excel files that utilise the alternate mark inversion (AMI) scheme to mitigate the nonlinearity in O-band transmission. The results after transmission over 60km of SMF show that AMI outperforms the duobinary and on-off keying formats.
The data for each figure is contained within a directory of the same name. Data files are named after the Figure they correspond to and contain the data necessary to recreate the plots. Data for Fig-1 is not included, as it is a schematic. Data for Fig-3-c is also not included in the dataset as the data is obtained from screenshots.
Data is accessible via CC BY license</span
Coupling strategies for silicon photonics integrated chips
Full text linkOver the last 20 years, silicon photonics has revolutionized the field of integrated optics, providing a novel and powerful platform to build mass-producible optical circuits. One of the most attractive aspects of silicon photonics is its ability to provide extremely small optical components, whose typical dimensions are an order of magnitude smaller than those of optical fiber devices. This dimension difference makes the design of fiber-to-chip interfaces challenging and, over the years, has stimulated considerable technical and research efforts in the field. Fiber-to-silicon photonic chip interfaces can be broadly divided into two principle categories: in-plane and out-of-plane couplers. Devices falling into the first category typically offer relatively high coupling efficiency, broad coupling bandwidth (in wavelength), and low polarization dependence but require relatively complex fabrication and assembly procedures that are not directly compatible with wafer-scale testing. Conversely, out-of-plane coupling devices offer lower efficiency, narrower bandwidth, and are usually polarization dependent. However, they are often more compatible with high-volume fabrication and packaging processes and allow for on-wafer access to any part of the optical circuit. In this paper, we review the current state-of-the-art of optical couplers for photonic integrated circuits, aiming to give to the reader a comprehensive and broad view of the field, identifying advantages and disadvantages of each solution. As fiber-to-chip couplers are inherently related to packaging technologies and the co-design of optical packages has become essential, we also review the main solutions currently used to package and assemble optical fibers with silicon-photonic integrated circuits
Strategies for wideband light generation in nonlinear multimode integrated waveguides
No full textIn this paper we discuss two strategies to achieve wideband light generation through intermodal nonlinear parametric processes in multimode integrated waveguides. We outline how the interplay among intermodal interactions and high dispersion may lead to the generation of light characterized by substantial power spectral density if compared to supercontinuum sources. These results are valid independently of the waveguide material, however our numerical simulations focus on silicon waveguides, which are nowadays at the core of integrated photonics. The long-term vision is that, by exploiting an adequate number of intermodal processes, widely tunable radiation having high-power spectral density can be generated in a broad portion of the transparency window of silicon
Nonlinear silicon photonic signal processing devices for future optical networks
No full textIn this paper, we present a review on silicon-based nonlinear devices for all optical nonlinear processing of complex telecommunication signals. We discuss some recent developments achieved by our research group, through extensive collaborations with academic partners across Europe, on optical signal processing using silicon-germanium and amorphous silicon based waveguides as well as novel materials such as silicon rich silicon nitride and tantalum pentoxide. We review the performance of four wave mixing wavelength conversion applied on complex signals such as Differential Phase Shift Keying (DPSK), Quadrature Phase Shift Keying (QPSK), 16-Quadrature Amplitude Modulation (QAM) and 64-QAM that dramatically enhance the telecom signal spectral efficiency, paving the way to next generation terabit all-optical networks
40 GHz nonlinear all optical switching in a Mach-Zehnder interferometer integrated device
No full textQPSK FWM signal conversion
No full textBit Error Ratio Raw measurements for the idler signal for BPSK and QPSK signals </span
Dataset for: Apodized silicon photonic grating couplers for mode order conversion
No full textDataset for the manuscript 'Apodized silicon photonic grating couplers for mode order conversion' by Iosif Demirtzioglou, Cosimo Lacava, Abdul Shakoor, Ali Khokhar, Yongmin Jung, David J. Thomson, and Periklis Petropoulos.
The research data corresponds to the above-stated manuscript and it should be read and interpreted in the context of its published form. Each set of data describes a figure illustrated in the published manuscript and is accompanied by appropriate captions which correspond to the figure numbers, axis titles and legend entries stated in the manuscript.</span
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