Figure 1: Dual-drive system layout Among various device geometries, photonic-crystal nanoresonators are particularly beneficial in this regard, given their exceptional capability of controlling light confinement and lightmatter interactions on the sub-wavelength scale. Photonics 4, 518526 (2010). Our EO modulators use MgO-doped lithium niobate for high power operation. 8b, c. However, Fig. Schmidt, R. V. & Kaminow, I. P. Metal-diffused optical waveguides in LiNbO3. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate. @article{Hu2023DynamicallyTS, title={Dynamically tunable single-/dual-band of the graphene absorber with a resonant asymmetric grating based on lithium niobate on insulator}, author={Jinhua Hu and Lili Sun and Lei Li and Xiuhong Liu and Danping Ren and Jijun Zhao}, journal={Optics Communications}, year={2023} } They are also expected to be building blocks for emerging applications such as quantum photonics5,6 and non-reciprocal optics7,8. Spatio-temporal isolator in lithium niobate on insulator Opt. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Coordinated Infrastructure (National Science Foundation, ECCS-1542081). The gray regions represents the 3-dB bandwidth limit for two devices, respectively, and the dashed line indicates the 3-dB limit of S21. Hybrid Silicon and Lithium Niobate Modulator Abstract: Hybrid Lithium Niobate (LN) and Silicon photonic (SiPh) integration platform has emerged as a promising candidate to combine the scalability of silicon photonics with the excellent modulation performance of LN. Figure5b shows a clear linear dependence of the induced resonance wavelength shift on the applied voltage, from which we obtained a tuning slope of 16.0pmV1 (corresponding to a frequency tuning slope of 1.98GHzV1), close to our design. Lithium niobate modulator | Laser Focus World Chen, L., Xu, Q., Wood, M. G. & Reano, R. M. Hybrid silicon and lithium niobate electro-optical ring modulator. Rao, A. et al. Review and perspective on ultrafast wavelength-size electro-optic modulators. To improve the electro-optic coupling, we utilize a partially etched structure with a rib-waveguide-like cross-section (Figs. View Spotlight analysis of the #OPG_JOSA_B paper Spiral waveguide Bragg grating modulator on thin-film Z-cut lithium niobate http://ow.ly/NsJS50NVr0m Spotlight . Electro-optic modulation using lithium niobate metasurfaces with This Perspective discusses and compares several different approaches to the design of high-bandwidth, low-voltage electro-optic devices, such as Mach-Zehnder modulators, made using thin-film lithium niobate (TFLN) and strategies for their incorporation as part of a larger photonic integrated circuit (PIC). 3 Electrical eye diagram at 100Gbaud. Numerical simulations show that the device exhibits a small capacitance C of C=~22fF, which is more than one order of magnitude smaller than other LN EOMs1,13,14,15,16,17,18,19,20,21,22,23,24,25,26. Such flexibility allows us to observe direct transition between the adiabatic driving regime and the non-adiabatic regime simply by continuously sweeping the modulation frequency to across the cavity linewidth. This work is supported in part by the National Science Foundation (NSF) (ECCS1609549, ECCS-1740296 E2CDA and DMR-1231319) and by Harvard University Office of Technology Development (Physical Sciences and Engineering Accelerator Award). Aoki, M. et al. The key modulation waveguide structure is a field-enhanced slot waveguide formed by embedding silicon nanowires in a thin-film lithium niobate (LN), which is different from the previously . and M.L. On-chip generation of high-dimensional entangled quantum states and their coherent control. Get the most important science stories of the day, free in your inbox. 4, e255 (2015). On the other hand, the electrodes are currently placed far from the photonic-crystal cavity so as to leave the optical mode intact to achieve a high optical Q. Integrating high-performance plug-and-play lasers would significantly reduce the cost, complexity, and power consumption of future communication systems, said Amirhassan Shams-Ansari, a graduate student at SEAS and first author of the study. Light Sci. OBrien, J. L. Optical quantum computing. Optica 6, 14981505 (2019). c, d, Numerically simulated microwave (c) and optical (d) field distributions (both shown in Ez components) in the cross-section of the thin-film modulator. Di Zhu, and Mengjie Yu, from SEAS, Hannah R. Grant, Leif Johansson from Freedom Photonics and Lingyan He and Mian Zhang from HyperLight Corporation. Opt. Opt. 1a, d). Therefore, we expect our devices to have much higher energy efficiency, as will be shown in the following sections. Phys. Such a configuration reduces the critical requirement of electrode alignment as needed in . Generation of ultrastable microwaves via optical frequency division. Nat. 6, 488503 (2012). Lett. Nat. M.L., J.L., and Y.H. 7, 10031013 (2019). On the other hand, the 30-m length of the electrode is overly conservative since it covers the full length of photonic-crystal structure including the injector, mirrors, and the cavity (Figs. This phenomenon is shown more clearly in Fig. Silicon optical modulators. Coherent modulation up to 100 GBd 16QAM using silicon-organic hybrid (SOH) devices. & Fathpour, S. Compact lithium niobate electrooptic modulators. Thin-film lithium niobate (TFLN) has emerged via recent progress in fabrication [20, 21] as a photonics platform with a unique set of capabilities for high-speed applications [22,23,24].While bulk and diffuse-waveguide LN have long been the workhorses of telecommunication technologies, TFLN waveguides offer nanometer-scale confinement, reducing device size, nonlinear thresholds, and switching . Sun, C. et al. Thin-Film Lithium Niobate Modulator Sets New Performance Records Zhang, M., Wang, C., Cheng, R., Shams-Ansari, A. ISSN 2041-1723 (online). EDFA, erbium-doped fibre amplifier; FPC, fibre-polarization controller; MZM, MachZehnder modulator (commercial); OSA, optical spectrum analyser; VOA, variable optical attenuator.
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