18 research outputs found
Principles, fundamentals, and applications of programmable integrated photonics
[EN] Programmable integrated photonics is an emerging new paradigm that aims at designing common integrated optical hardware resource configurations, capable of implementing an unconstrained variety of functionalities by suitable programming, following a parallel but not identical path to that of integrated electronics in the past two decades of the last century. Programmable integrated photonics is raising considerable interest, as it is driven by the surge of a considerable number of new applications in the fields of telecommunications, quantum information processing, sensing, and neurophotonics, calling for flexible, reconfigurable, low-cost, compact, and low-power-consuming devices that can cooperate with integrated electronic devices to overcome the limitation expected by the demise of Moore¿s Law. Integrated photonic devices exploiting full programmability are expected to scale from application-specific photonic chips (featuring a relatively low number of functionalities) up to very complex application-agnostic complex subsystems much in the same way as field programmable gate arrays and microprocessors operate in electronics. Two main differences need to be considered. First, as opposed to integrated electronics, programmable integrated photonics will carry analog operations over the signals to be processed. Second, the scale of integration density will be several orders of magnitude smaller due to the physical limitations imposed by the wavelength ratio of electrons and light wave photons. The success of programmable integrated photonics will depend on leveraging the properties of integrated photonic devices and, in particular, on research into suitable interconnection hardware architectures that can offer a very high spatial regularity as well as the possibility of independently setting (with a very low power consumption) the interconnection state of each connecting element. Integrated multiport interferometers and waveguide meshes provide regular and periodic geometries, formed by replicating unit elements and cells, respectively. In the case of waveguide meshes, the cells can take the form of a square, hexagon, or triangle, among other configurations. Each side of the cell is formed by two integrated waveguides connected by means of a Mach¿Zehnder interferometer or a tunable directional coupler that can be operated by means of an output control signal as a crossbar switch or as a variable coupler with independent power division ratio and phase shift. In this paper, we provide the basic foundations and principles behind the construction of these complex programmable circuits. We also review some practical aspects that limit the programming and scalability of programmable integrated photonics and provide an overview of some of the most salient applications demonstrated so far.European Research Council; Conselleria d'Educació, Investigació, Cultura i Esport;
Ministerio de Ciencia, Innovación y Universidades; European Cooperation in Science
and Technology; Horizon 2020 Framework Programme.Pérez-López, D.; Gasulla Mestre, I.; Dasmahapatra, P.; Capmany Francoy, J. (2020). Principles, fundamentals, and applications of programmable integrated photonics. Advances in Optics and Photonics. 12(3):709-786. https://doi.org/10.1364/AOP.387155709786123Lyke, J. C., Christodoulou, C. G., Vera, G. A., & Edwards, A. H. (2015). An Introduction to Reconfigurable Systems. Proceedings of the IEEE, 103(3), 291-317. doi:10.1109/jproc.2015.2397832Kaeslin, H. (2008). Digital Integrated Circuit Design. doi:10.1017/cbo9780511805172Trimberger, S. M. (2015). Three Ages of FPGAs: A Retrospective on the First Thirty Years of FPGA Technology. Proceedings of the IEEE, 103(3), 318-331. doi:10.1109/jproc.2015.2392104Mitola, J. (1995). The software radio architecture. IEEE Communications Magazine, 33(5), 26-38. doi:10.1109/35.393001Nunes, B. A. A., Mendonca, M., Nguyen, X.-N., Obraczka, K., & Turletti, T. (2014). 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Multipurpose self-configuration of programmable photonic circuits
[EN] Programmable integrated photonic circuits have been called upon to lead a new revolution in information systems by teaming up with high speed digital electronics and in this way, adding unique complementary features supported by their ability to provide bandwidthunconstrained analog signal processing. Relying on a common hardware implemented by two-dimensional integrated photonic waveguide meshes, they can provide multiple functionalities by suitable programming of their control signals. Scalability, which is essential for increasing functional complexity and integration density, is currently limited by the need to precisely control and configure several hundreds of variables and simultaneously manage multiple configuration actions. Here we propose and experimentally demonstrate two different approaches towards management automation in programmable integrated photonic circuits. These enable the simultaneous handling of circuit self-characterization, auto-routing, self-configuration and optimization. By combining computational optimization and photonics, this work takes an important step towards the realization of high-density and complex integrated programmable photonics.D.P.L. acknowledges funding through the Spanish MINECO Juan de la Cierva program. J.C. acknowledges funding from the ERC Advanced Grant ERC-ADG-2016-741415 UMWP-Chip and ERC-2019-POC-859927. Authors also acknowledge funding from Future MWP technologies and applications PROMETEO/2017/103, Advanced Instrumentation for World Class Microwave Photonics Research IDIFEDER/2018/031, EUIMWP CA16220, Infraestructura para caracterizacion de Chips Fotonicos EQC2018-004683-P.Pérez-López, D.; López-Hernández, A.; Dasmahapatra, P.; Capmany Francoy, J. (2020). Multipurpose self-configuration of programmable photonic circuits. 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Programmable Integrated Photonics (Oxford University Press, 2019).Lyke, J. et al. An introduction to reconfigurable systems. Proc. IEEE 103, 291–317 (2015).Capmany, J., Gasulla, I. & Pérez, D. The programmable processor. Nat. Photonics 10, 6–8 (2015).Carolan, J. et al. Universal linear optics. Science 349, 711 (2015).Ribeiro, A. et al. Demonstration of a 4×4-port universal linear circuit. Optica 3, 1348–1357 (2016).Annoni, A. Unscrambling light—automatically undoing strong mixing between modes. Light Sci. Appl. 6, e17110 (2017).Shen, Y. et al. Deep learning with coherent nanophotonic circuits. Nat. Photonics 11, 441–446 (2017).Mennea, P. L. et al. Modular linear optical circuits. Optica 5, 1087–1090 (2018).Zheng, D. et al. Low-loss broadband 5×5 non-blocking Si3N4 optical switch matrix. Opt. Lett. 44, 2629–2632 (2019).Zhuang, L. et al. Programmable photonic signal processor chip for radiofrequency applications. Optica 2, 854–859 (2015).Pérez, D. et al. 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Express 24, 12093–12106 (2016).Pérez-López, D., Sánchez, E. & Capmany, Y. J. Programmable true time delay lines using integrated waveguide meshes. J. Lightwave Technol. 36, 4591–4601 (2018).López, A. et al. Auto-routing algorithm for field-programmable photonic gate arrays. Opt. Express 28, 737–752 (2020).Chen, X. & Boggaerts, W. A graph-based design and programming strategy for reconfigurable photonic circuits. In IEEE Photonics Society Summer Topical Meeting Series (SUM) (IEEE, Fort Lauderdale, FL, USA, 2019).Pérez, D., López, A., DasMahapatra, P. & Capmany, J. Field-Programmable Photonic Array for multipurpose microwave photonic applications. In IEEE International Topical Meeting on Microwave Photonics (MWP) (IEEE, Ottawa, Canada, 2019).Pérez, D. & Capmany, J. Scalable analysis for arbitrary photonic integrated waveguide meshes. Optica 6, 19–27 (2019).Yegnanarayanan, S. et al. Automated initialization of reconfigurable silicon-nitride (SiNx) filters. 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Dual-Drive Directional Couplers for Programmable Integrated Photonics
A novel class of photonic integrated circuits employs large-scale integration
of combined beam splitters and waveguides loaded with phase actuators to
provide complex linear processing functionalities that can be reconfigured
dynamically. Here, we propose and experimentally demonstrate a
thermally-actuated Dual-Drive Directional Coupler (DD-DC) design, integrated in
a silicon nitride platform, functioning both as a standalone optical component
providing arbitrary optical beam splitting and common phase as well as for its
use in waveguide mesh arrangements. We analyze the experimental demonstration
of the first integration of a triangular waveguide mesh arrangement, and the
first DD-DC based arrangement along with an extended analysis of its
performance and scalability
Modeling amplified arbitrary filtered microwave photonic links and systems
[EN] Microwave photonic (MWP) links and systems will have more losses as their complexities increase and there will be a need for incorporating optical amplification. Here, we report results of an analytical model developed for amplified arbitrary filtered MWP systems that provides the expressions of the main figures of merit fur intensity modulation direct detection. It contemplates the cases of power, intermediate and pre amplification. The model is applied to a long MWP link and then it is evaluated in a MWP reconfigurable filter implemented by means of a programmable waveguide mesh photonic integrated circuit.Ministerio de Ciencia, Innovacion y Universidades (JUANDELACIERVAAWARD); European Commission (H2020-ICT-2019-021-871330 NEOTERIC); Generalitat Valenciana (IDIFEDER/2018/031, IDIFEDER/2020/032, PROMETEO/2017/103); European Research Council (ERC ADG-2016-741415 UMWP-Chip, ERC-POC-2019-859927).Sánchez-Gomáriz, E.; Pérez-López, D.; Dasmahapatra, P.; Capmany Francoy, J. (2021). Modeling amplified arbitrary filtered microwave photonic links and systems. Optics Express. 29(10):14757-14772. https://doi.org/10.1364/OE.423613S1475714772291
Auto-routing algorithm for field-programmable photonic gate arrays
[EN] Programmable multipurpose photonic integrated circuits require software routines to make use of their flexible operation as desired. In this work, we propose and demonstrate the use of a modified tree-search algorithm to automatically determine the optimum optical path in a field-programmable photonic gate array (FPPGA), based on end-user specifications, circuit architecture and imperfections in the realized FPPGA arising, for example, from fabrication variations. In such a scenario, the proposed algorithm only requires the hardware topology and the location of the connections of the FPPGA defining the optical path to be programmed. The routine is able to optimize the path over multiple and competing objectives like the overall length, accumulated loss and power consumption. In addition, should any region of the circuit suffer from any potential damage that may affect the device performance, this algorithm is also able to provide basic self-healing and fault-tolerance capabilities by supplying alternative paths through the photonic arrangement.The authors acknowledge financial support by the ERC ADG-2016 UMWP-Chip ERC-2016-
ADG-741415, the ERC PoC-2019 FPPAs ERC-2019-POC-859927, the Generalitat Valenciana
Future MWP technologies and applications PROMETEO 2017/103 research excellency award,
and the COST Action CA16220 EUIMWP, the Advanced Instrumentation for World Class
Microwave Photonics Research IDIFEDER/2018/031 and the Infraestructura para caracterizacion
de Chips Fotonicos EQC2018-004683-PLópez-Hernández, A.; Pérez-López, D.; Dasmahapatra, P.; Capmany Francoy, J. (2020). Auto-routing algorithm for field-programmable photonic gate arrays. Optics Express. 28(1):737-752. https://doi.org/10.1364/oe.382753737752281Soref, R. (2006). The Past, Present, and Future of Silicon Photonics. IEEE Journal of Selected Topics in Quantum Electronics, 12(6), 1678-1687. doi:10.1109/jstqe.2006.883151Streshinsky, M., Ding, R., Liu, Y., Novack, A., Galland, C., Lim, A. E.-J., … Hochberg, M. (2013). The Road to Affordable, Large-Scale Silicon Photonics. Optics and Photonics News, 24(9), 32. doi:10.1364/opn.24.9.000032Smit, M., Leijtens, X., Ambrosius, H., Bente, E., van der Tol, J., Smalbrugge, B., … van Veldhoven, R. (2014). An introduction to InP-based generic integration technology. Semiconductor Science and Technology, 29(8), 083001. doi:10.1088/0268-1242/29/8/083001Carroll, L., Lee, J.-S., Scarcella, C., Gradkowski, K., Duperron, M., Lu, H., … O’Brien, P. (2016). Photonic Packaging: Transforming Silicon Photonic Integrated Circuits into Photonic Devices. Applied Sciences, 6(12), 426. doi:10.3390/app6120426Pérez, D., Gasulla, I., & Capmany, J. (2018). Field-programmable photonic arrays. Optics Express, 26(21), 27265. doi:10.1364/oe.26.027265Pérez, D., Gasulla, I., Capmany, J., & Soref, R. A. (2016). Reconfigurable lattice mesh designs for programmable photonic processors. Optics Express, 24(11), 12093. doi:10.1364/oe.24.012093Zhuang, L., Roeloffzen, C. G. H., Hoekman, M., Boller, K.-J., & Lowery, A. J. (2015). Programmable photonic signal processor chip for radiofrequency applications. Optica, 2(10), 854. doi:10.1364/optica.2.000854Pérez, D., Gasulla, I., Crudgington, L., Thomson, D. J., Khokhar, A. Z., Li, K., … Capmany, J. (2017). Multipurpose silicon photonics signal processor core. Nature Communications, 8(1). doi:10.1038/s41467-017-00714-1Pérez, D., & Capmany, J. (2019). Scalable analysis for arbitrary photonic integrated waveguide meshes. Optica, 6(1), 19. doi:10.1364/optica.6.000019Dijkstra, E. W. (1959). A note on two problems in connexion with graphs. Numerische Mathematik, 1(1), 269-271. doi:10.1007/bf01386390McQuillan, J., Richer, I., & Rosen, E. (1980). The New Routing Algorithm for the ARPANET. IEEE Transactions on Communications, 28(5), 711-719. doi:10.1109/tcom.1980.109472
Integrated photonic tunable basic units using dual-drive directional couplers
"© 2019 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited"[EN] Photonic integrated circuits based on waveguide meshes and multibeam interferometers call for large-scale integration of Tunable Basic Units (TBUs) that feature beam splitters and waveguides. This units are loaded with phase actuators to provide complex linear processing functionalities based on optical interference and can be reconfigured dynamically. Here, we propose and experimentally demonstrate, to the best of our knowledge, for the first time, a thermally actuated Dual-Drive Directional Coupler (DD-DC) design integrated on a silicon nitride platform. It operates both as a standalone optical component providing arbitrary optical beam splitting and common phase as well as a low loss and potentially low footprint TBU. Finally, we report the experimental demonstration of the first integrated triangular waveguide mesh arrangement using DD-DC based TBUs and provide an extended analysis of its performance and scalability. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing AgreementEuropean Research Council (ERC ADG-2016UMWP-Chip, ERC-POC-2019 FPPAs); Generalitat Valenciana (PROMETEO 2017/017); European Cooperation in Science and Technology (COST Action CA16220 EUIMWP.).Pérez-López, D.; Gutierrez Campo, AM.; Sánchez-Gomáriz, E.; Dasmahapatra, P.; Capmany Francoy, J. (2019). Integrated photonic tunable basic units using dual-drive directional couplers. Optics Express. 27(26):38071-38086. https://doi.org/10.1364/OE.27.03807138071380862726Soref, R. (2006). The Past, Present, and Future of Silicon Photonics. IEEE Journal of Selected Topics in Quantum Electronics, 12(6), 1678-1687. doi:10.1109/jstqe.2006.883151Somekh, S., Garmire, E., Yariv, A., Garvin, H. L., & Hunsperger, R. G. (1974). Channel Optical Waveguides and Directional Couplers in GaAs–Imbedded and Ridged. Applied Optics, 13(2), 327. doi:10.1364/ao.13.000327Pérez, D., Gasulla, I., Capmany, J., & Soref, R. A. (2016). Reconfigurable lattice mesh designs for programmable photonic processors. Optics Express, 24(11), 12093. doi:10.1364/oe.24.012093Clements, W. R., Humphreys, P. C., Metcalf, B. J., Kolthammer, W. S., & Walsmley, I. A. (2016). Optimal design for universal multiport interferometers. Optica, 3(12), 1460. doi:10.1364/optica.3.001460Zhuang, L., Roeloffzen, C. G. H., Hoekman, M., Boller, K.-J., & Lowery, A. J. (2015). Programmable photonic signal processor chip for radiofrequency applications. Optica, 2(10), 854. doi:10.1364/optica.2.000854Pérez, D., Gasulla, I., Crudgington, L., Thomson, D. J., Khokhar, A. Z., Li, K., … Capmany, J. (2017). Multipurpose silicon photonics signal processor core. Nature Communications, 8(1). doi:10.1038/s41467-017-00714-1Perez-Lopez, D., Sanchez, E., & Capmany, J. (2018). Programmable True Time Delay Lines Using Integrated Waveguide Meshes. Journal of Lightwave Technology, 36(19), 4591-4601. doi:10.1109/jlt.2018.2831008Kogelnik, H., & Schmidt, R. (1976). Switched directional couplers with alternating ΔΒ. IEEE Journal of Quantum Electronics, 12(7), 396-401. doi:10.1109/jqe.1976.1069190Schmidt, R. V., & Kogelnik, H. (1976). Electro‐optically switched coupler with stepped Δβ reversal using Ti‐diffused LiNbO3waveguides. Applied Physics Letters, 28(9), 503-506. doi:10.1063/1.88833Alferness, R. C., & Veselka, J. J. (1985). Simultaneous modulation and wavelength multiplexing with a tunable Ti:LiNbO3directional coupler filter. Electronics Letters, 21(11), 466-467. doi:10.1049/el:19850330Sharkawy, A., Shi, S., Prather, D. W., & Soref, R. A. (2002). Electro-optical switching using coupled photonic crystal waveguides. Optics Express, 10(20), 1048. doi:10.1364/oe.10.001048Orlandi, P., Morichetti, F., Strain, M. J., Sorel, M., Melloni, A., & Bassi, P. (2013). Tunable silicon photonics directional coupler driven by a transverse temperature gradient. Optics Letters, 38(6), 863. doi:10.1364/ol.38.000863Pérez, D., & Capmany, J. (2019). Scalable analysis for arbitrary photonic integrated waveguide meshes. Optica, 6(1), 19. doi:10.1364/optica.6.000019Rios, C., Stegmaier, M., Cheng, Z., Youngblood, N., Wright, C. D., Pernice, W. H. P., & Bhaskaran, H. (2018). Controlled switching of phase-change materials by evanescent-field coupling in integrated photonics [Invited]. Optical Materials Express, 8(9), 2455. doi:10.1364/ome.8.002455Zheng, J., Khanolkar, A., Xu, P., Colburn, S., Deshmukh, S., Myers, J., … Majumdar, A. (2018). GST-on-silicon hybrid nanophotonic integrated circuits: a non-volatile quasi-continuously reprogrammable platform. Optical Materials Express, 8(6), 1551. doi:10.1364/ome.8.001551Capmany, J., Domenech, D., & Muñoz, P. (2014). Silicon graphene waveguide tunable broadband microwave photonics phase shifter. Optics Express, 22(7), 8094. doi:10.1364/oe.22.008094Abel, S., Eltes, F., Ortmann, J. E., Messner, A., Castera, P., Wagner, T., … Fompeyrine, J. (2018). Large Pockels effect in micro- and nanostructured barium titanate integrated on silicon. Nature Materials, 18(1), 42-47. doi:10.1038/s41563-018-0208-0Sanchez, L., Lechago, S., Gutierrez, A., & Sanchis, P. (2016). Analysis and Design Optimization of a Hybrid VO2/Silicon2
2 Microring Switch. IEEE Photonics Journal, 8(2), 1-9. doi:10.1109/jphot.2016.2551463Qiao, L., Tang, W., & Chu, T. (2017). 32 × 32 silicon electro-optic switch with built-in monitors and balanced-status units. Scientific Reports, 7(1). doi:10.1038/srep42306Zheng, D., Doménech, J. D., Pan, W., Zou, X., Yan, L., & Pérez, D. (2019). Low-loss broadband 5 × 5 non-blocking Si3N4 optical switch matrix. Optics Letters, 44(11), 2629. doi:10.1364/ol.44.002629Capmany, J., Gasulla, I., & Pérez, D. (2015). The programmable processor. Nature Photonics, 10(1), 6-8. doi:10.1038/nphoton.2015.254Carolan, J., Harrold, C., Sparrow, C., Martín-López, E., Russell, N. J., Silverstone, J. W., … Laing, A. (2015). Universal linear optics. Science, 349(6249), 711-716. doi:10.1126/science.aab3642Lee, B. G., & Dupuis, N. (2019). Silicon Photonic Switch Fabrics: Technology and Architecture. Journal of Lightwave Technology, 37(1), 6-20. doi:10.1109/jlt.2018.2876828Seok, T. J., Quack, N., Han, S., Muller, R. S., & Wu, M. C. (2016). Large-scale broadband digital silicon photonic switches with vertical adiabatic couplers. Optica, 3(1), 64. doi:10.1364/optica.3.00006
First 4×4 InP switch matrix based on third-order micro-ring-resonators
A first of its kind InP switch circuit is implemented using a matrix of 4×4 third-order ring resonators. Broadband routing is demonstrated at 10Gbps and 20Gbps with a maximum power penalty of only 2.6dB
Third-order ring-resonator based InP switch matrix
An InP switch circuit is implemented and demonstrated for the first time using a matrix of 4×4 third-order ring resonators. 10Gb/s routing is demonstrated with a maximum power penalty of 2.5dB