Conference Publications

Key:  * Inter-group collaboration; + International collaboration; ^ Collaboration with other UK group

2025

·         ^C. Vivian, J. Seddon, I. Skandalos, M. Tang, F. Gardes, H. Liu, and A. Seeds, “Modelling of a narrow linewidth monolithically integrated quantum dot-on-silicon extended cavity laser,” in SPIE 13371, Silicon Photonics XX, San Francisco, California, United States, 2025, vol. 13371, p. 133710P, doi: 10.1117/12.3042230.

·         B. Sun, T. Li, V. Yokar, S. Shen, S. Stracca, S. Yan, R. Ma, D. Simeonidou, K. Bergman, R. V. Penty, and Q. Cheng, "Nanosecond electro-optic switching with time synchronisation for fronthaul TSN applications," in European Conference on Optical Communication (ECOC), Frankfurt, Germany, Sep./Oct. 2025, paper B4.M5-8.

·         Z. Zhang, Y. Wang, C. Yao, W. Zhang, Z. Shi, H. Huang, R. Ma, X. Du, Z. Shi, L. F. Lester, R. V. Penty, Q. Cheng, and I. H. White, "Deep sensing for retrieving optical thickness," in CLEO: Fundamental Science, San Jose, CA, USA, May 2025, paper JPS200_35

·         M. Chen, C. Yao, Y. Wang, A. Wonfor, S. Yang, R. V. Penty, and Q. Cheng, "Integrated photonic iterative processor for I/O-efficient computing: Selecting the optimal core processing architecture," in CLEO: Science and Innovations, San Jose, CA, USA, May 2025, paper SS184_5.

·         W. Zhang, C. Yao, P. Bao, K. Xu, T. Yan, L. Ming, R. Ma, X. Du, R. V. Penty, and Q. Cheng, "Integrated reconstructive spectrometer with dispersion-engineered components," in Optical Fiber Communication Conference (OFC), San Diego, CA, USA, Mar. 2025, paper M2D-4

·         H. Huang, Z. Shi, R. V. Penty, and Q. Cheng, "Aberration-free 3D-nanoprinted fiber-to-chip coupler with ellipsoidal reflectors," in 2025 Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, USA, May 2025, pp. 1–2

·         R. Ma, T. Li, L. Luo, M. Chen, P. Bao, R. V. Penty, and Q. Cheng, "Reconfigurable wavelength-and-space photonic integrated switch for future fronthaul networks," in CLEO: Applications and Technology, San Jose, CA, USA, May 2025, paper AA125_4.

·         H. Huang, Z. Shi, R. V. Penty, and Q. Cheng, "Hybrid InP-Si photonic integration via 3D-nanoprinted non-waveguided couplers," in 2025 Optical Fiber Communications Conference and Exhibition (OFC), San Diego, CA, USA, Mar. 2025, pp. 1–3

·         +R. Ma, L. Luo, T. Li, C. Yao, J. Zhang, M. Chen, P. Bao, G. Roelkens, R. Penty, and Q. Cheng, “Silicon 4×4×8λ space-and-wavelength selective optical switch with resonant phase shifters,” in Opt. Fiber Commun. Conf. (OFC), 2025, paper W3F.1, doi: 10.1364/OFC.2025.W3F.1

·         R. Ma, L. Luo, T. Li, D. Syrivelis, J. Zhang, W. Ali, Z. Zhang, P. Bao, G. Roelkens, R. Penty, and Q. Cheng, “Two-dimensional photonic-switched high-speed interconnects for AI-driven data centre networks,” Eur. Conf. Opt. Commun. (ECOC), 2025. Copenhagen, Denmark

·         F. Albeladi, C. Allford, S. Gillgrass, S. Power, N. Albittar, S. Shutts, and P. Smowton, “On-chip InAs-QD mode-locked laser for integrated photonics,” in Novel In-Plane Semicond. Lasers XXIII, SPIE Photon. West, San Francisco, CA, USA, Feb. 2025.

·         R. Ma, L. Luo, M. Chen, J. Zhang, G. Roelkens, R. Penty, and Q. Cheng, “Arbitrary space-and-wavelength selective photonic switch with resonant phase shifting,” in SPIE Photon. West, San Francisco, CA, USA, Jan. 2025.

2024

·         +P. Bao, C. Yao, G. Talli, M. Kuschnerov, R. Penty, and Q. Cheng, “Low-crosstalk 8×8 silicon photonic switch fabric with dual-stage MZI cells,” in Opt. Fiber Commun. Conf. (OFC), San Diego, CA, USA, Mar. 2024, doi: 10.1364/OFC.2024.Th1A.6.

·         F. Albeladi, C. Allford, S. Gillgrass, S. Power, N. Albittar, and P. Smowton, “Multi-mode interference reflector InAs-QD mode-locked laser for integrated photonics,” in IEEE Photon. Conf. (IPC), Roma, Italy, Nov. 2024, doi: 10.1109/IPC60965.2024.10799723.

·         F. Albeladi, S. Gillgrass, P. Mishra, N. Albittar, S. Power, S. Shutts, and P. Smowton, “On-chip InAs QD ring-resonator multi-mode interference reflector lasers for PICs,” in 29th Int. Semicond. Laser Conf. (ISLC), Orlando, FL, USA, 2024, doi: 10.1109/ISLC57752.2024.10717372.

·         F. Albeladi, S. Gillgrass, L. Michael, A. Enderson, P. Mishra, H. Deng, M. Tang, H. Liu, S. Shutts, and P. Smowton, “A platform for integrated photonics,” in 29th Int. Semicond. Laser Conf. (ISLC), Orlando, FL, USA, 2024, doi: 10.1109/ISLC57752.2024.10717359.

·         P. Mishra, L. Jarvis, C. Hodges, A. Enderson, F. Albeladi, S. Gillgrass, R. Forrest, C. Allford, M. Tang, H. Liu, S. Shutts, and P. Smowton, “Achieving O-band InAs quantum dot laser operation at 200 °C,” in 29th Int. Semicond. Laser Conf. (ISLC), Orlando, FL, USA, 2024, doi: 10.1109/ISLC57752.2024.10717409.

·         L. Jarvis, B. Maglio, F. Albeladi, S. Gillgrass, C. Allford, H. Deng, M. Tang, H. Liu, S. Shutts, and P. Smowton, “Improving the performance of co-doped 1300nm QD lasers and modulators,” in 29th Int. Semicond. Laser Conf. (ISLC), Orlando, FL, USA, 2024, doi: 10.1109/ISLC57752.2024.10717406.

·         C. Yao, W. Zhang, P. Bao, M. Chen, T. Yan, R. Penty, and Q. Cheng, “Ultra-broadband on-chip spectrometer with > 325 nm operational bandwidth,” in Eur. Conf. Opt. Commun. (ECOC), Frankfurt, Germany, Sep. 2024, paper W3C.3.

·         B. Sun, M. Chen, C. Yao, P. Bao, Z. Zhang, L. Luo, Z. Shi, K. Bergman, R. Penty, and Q. Cheng, “Ultralow-crosstalk, electro-optic microdisk optical switch fabric incorporating Si-SiN-SIN tri-layer shuffle,” in Eur. Conf. Opt. Commun. (ECOC), Frankfurt, Germany, Sep. 2024.

·         *Z. Zhang, I. Skandalos, R. Ma, M. Chen, B. Sun, C. Zhong, F. Gardes, Q. Cheng, and R. Penty, “Towards a compact monolithic integrated laser platform on SiN: deep-groove-assisted bends,” in IEEE Photon. Conf. (IPC), Rome, Italy, Nov. 2024, doi: 10.17863/CAM.112991.

·         M. Chen, C. Yao, Y. Wang, A. Wonfor, S. Yang, J. Ma, T. Yan, R. Penty, and Q. Cheng, “Solving integral and differential equations with photonic iterative processor,” in Eur. Conf. Opt. Commun. (ECOC), Frankfurt, Germany, Sep. 2024, paper W2A.34.

·         *P. Mishra, L. Jarvis, C. Hodges, S. Gillgrass, R. Forrest, D. Butkovicova, C. Allford, M. Tang, H. Liu, S. Shutts, and P. Smowton, “Achieving InAs quantum dot laser operation at and beyond 150°C,” in Conf. Lasers Electro-Opt. (CLEO): Appl. Technol., Charlotte, NC, USA, May 2024, doi: 10.1364/CLEO_AT.2024.ATh3O.2.

·         *A. Enderson, P. Mishra, Z. Cao, F. Albeladi, S. Gillgrass, B. Ratiu, N. Peng, M. Tang, H. Liu, S. Shutts, and P. Smowton, “Selective-area intermixing for implementing InAs QDs based active-passive integration for photonic integrated circuits,” in Novel In-Plane Semicond. Lasers XXIII, SPIE Photon. West, San Francisco, CA, USA, Jan. 2024, Proc. SPIE, vol. PC12905, doi: 10.1117/12.3002710.

·         H. Liu, “III-V quantum-dot materials, single photon emitters and lasers monolithically grown on Si platform,” in 30th Int. Conf. Amorphous Nanocryst. Semicond., Manchester, U.K., Aug. 2024.

·         H. Liu, “III-V quantum-dot materials and lasers monolithically grown on Si platform for Si photonics,” in Int. Nano-Optoelectron. Workshop, Shenzhen, China, Jul. 2024.

·         H. Liu, “Quantum-dot lasers monolithically grown on Si substrate,” in Int. Conf. Next Gener. Electron. Photon. (INGEP), Hangzhou, China, Apr. 2024.

·         +I. Skandalos, T. Bucio, L. Mastronardi, A. Zilkie, G. Yu, and F. Gardes, “100 Gbit/s quantum-confined Stark effect electro-optic modulator integrated with SiN waveguides,” in IEEE Photon. Soc. Summer Top. Meeting Ser. (SUM), Bridgetown, Barbados, 2024, pp. 1–2, doi: 10.1109/SUM60964.2024.10614514.

·         +F. Gardes, I. Skandalos, V. Vitali, T. Bucio, J. Faneca, I. Zeimpekis, C. Lacava, and P. Petropoulos, “Silicon nitride for enhanced integrated photonics,” in 24th IEEE Int. Conf. Nanotechnol. (NANO), Gijon, Spain, 2024, pp. 479–482, doi: 10.1109/NANO61778.2024.10628873.

·         B. Sun, Z. Zhang, M. Chen, C. Yao, P. Bao, Z. Shi, Q. Cheng, K. Bergman, and R. Penty, “Si-SiN-SiN tri-layer strictly non-blocking 8×8 microring-based optical switch,” in Opt. Fiber Commun. Conf. (OFC), San Diego, CA, USA, Mar. 2024, doi: 10.1364/OFC.2024.W2B.31.

·         C. Yao, P. Bao, J. Ma, T. Yan, R. Penty, and Q. Cheng, “Single-shot ultra-broadband spectrometer with cascaded nanobeam mirrors,” in Opt. Fiber Commun. Conf. (OFC), San Diego, CA, USA, Mar. 2024, doi: 10.1364/OFC.2024.M4B.2.

·         B. Sun, T. Li, H. Huang, Q. Cheng, and R. Penty, “Demonstration of reconfigurable microring-based silicon optical switch for optical fronthaul,” in Conf. Lasers Electro-Opt. (CLEO), Charlotte, NC, USA, May 2024, doi: 10.1364/CLEO_SI.2024.STh4Q.3.

    2023

    ·         *A. Enderson, P. Mishra, Z. Cao, F. Albeladi, S. Gillgrass, B. Ratiu, N. Peng, M. Tang, H. Liu, S. Shutts, and P. Smowton, “Monolithic InAs QDs based active-passive integration for photonic integrated circuits,” in IEEE Photon. Conf. (IPC), Orlando, FL, USA, 2023, pp. 1–2, doi: 10.1109/IPC57732.2023.10360634.

    ·         I. Skandalos, T. Dominguez Bucio, L. Mastronardi, Y. Hou, T. Rutirawut, and F. Gardes, “Monolithic coupling between high- and mid-index, multi-micron waveguides for O-band applications,” in Silicon Photon. XVIII, G. T. Reed and A. P. Knights, Eds., San Francisco, CA, USA: SPIE, Mar. 2023, p. 34, doi: 10.1117/12.2648634.

      2022

      ·         +A. Sharma, Q. Cheng, N. Bamiedakis, M. Glick, F. Karinou, K. Bergman, and R. Penty, “Bandwidth reconfigurable optical switching architecture for CPU-GPU computing systems with shared memory,” in Opt. Fiber Commun. Conf. (OFC), San Diego, CA, USA, Mar. 2022, doi: 10.1364/OFC.2022.W2A.19.

      ·         +S. Ilie, G. De Paoli, A. Flint, T. Bucio, P. Ginel-Moreno, J. Sagar, A. Ortega-Monux, K. Lekkas, T. Rutirawut, L. Mastronardi, I. Skandalos, I. Molina-Fernandez, G. Kanellos, P. Cheben, P. Smith, J. Gates, and F. Gardes, “UV-written silicon nitride integrated optical phased arrays,” in Smart Photon. Optoelectron. Integr. Circuits 2022, Proc. SPIE, vol. 12005, San Francisco, CA, USA, Jan. 2022, Art. no. 1200504, doi: 10.1117/12.2608824.

      ·         *F. Albeladi, S. Gillgrass, J. Nabialek, P. Mishra, R. Forrest, T. Albiladi, S. Shutts, M. Tang, H. Liu, and P. Smowton, “Multi-mode interference reflector based InAs-QD laser,” in 28th Int. Semicond. Laser Conf. (ISLC), Matsue, Japan, Oct. 2022, pp. 1–2, doi: 10.23919/ISLC52947.2022.9943389.

      ·         ^T. Bucio, I. Skandalos, V. Vitali, L. Mastronardi, T. Rutirawut, J. Hillier, N. Kalfagiannis, P. Petropoulos, and F. Gardes, “Silicon nitride material integration for enhanced photonic functionalities,” in Conf. Lasers Electro-Opt. Pacific Rim (CLEO-PR), Sapporo, Japan, Aug. 2022, doi: 10.1364/CLEOPR.2022.CThP12D_04.

      ·         +F. Gardes, G. De Paoli, J. Faneca, I. Zeimpekis, T. Bucio, S. Ilie, A. Shoaa, D. Hewak, A. Flint, and J. Gates, “Strategies for non-volatile alteration of optical components based on mid index waveguides,” in Conf. Lasers Electro-Opt. Pacific Rim (CLEO-PR), Sapporo, Japan, Aug. 2022, doi: 10.1364/CLEOPR.2022.CThP12D_01.

      ·         Y. Hou, F. Gardes, and R. Graham, “GaN/Si hybrid integrated photonic platform in UV-blue light region,” in Int. Workshop Nitride Semicond. (IWN), Berlin, Germany, Oct. 2022.

      ·         +J. Xia, M. Chen, A. Rizzo, B. Sun, Z. Wang, M. Glick, Q. Cheng, K. Bergman, and R. Penty, “O-band microring resonator based switch-and-select silicon photonic switch fabric,” in Conf. Lasers Electro-Opt. (CLEO), San Jose, CA, USA, May 2022, doi: 10.1364/CLEO_SI.2022.SF4M.7.

      ·         C. Yao, Q. Cheng, and R. Penty, “Compact and alignment-tolerant vertical coupler for heterogeneous photonic integration,” in Eur. Conf. Integr. Opt. (ECIO), Milan, Italy, Apr. 2022.

      ·         *L. Jarvis, B. Maglio, S. Shutts, Z. Li, H. Deng, M. Tang, H. Liu, and P. Smowton, “Active region doping strategies in O-band InAs/GaAs quantum-dot lasers,” in Novel In-Plane Semicond. Lasers XXI, Proc. SPIE, San Francisco, CA, USA, Jan. 2022, doi: 10.1117/12.2614632.

      ·         Y. Hou, H. Jia, M. Tang, A. Mosberg, Q. Ramasse, I. Skandalos, Y. Noori, J. Yang, H. Liu, and F. Gardes, “A thermally removable SiOₓ surface protecting layer on Si (100) for molecular beam epitaxy,” in Semicond. Integr. Optoelectron. (SIOE), Cardiff, U.K., Apr. 2022.

      ·         Y. Hou, M. Tang, I. Skandalos, Y. Noori, A. Seeds, H. Liu, and F. Gardes, “Surface/interface engineering InAs quantum-dot based edge-emitting LED for III-V/SiN photonic integrations,” in UK Semicond. Conf., Sheffield, U.K., Jul. 2022.

      ·         Y. Noori, N. Abdelazim, S. Thomas, G. Reid, P. Bartlett, N. Klein, R. Beanland, Y. Hou, I. Skandalos, F. Gardes, and K. de Groot, “2D material based optoelectronics by electroplating,” in Semicond. Integr. Optoelectron. (SIOE), Cardiff, U.K., Apr. 2022.

      ·         *I. Skandalos, T. Rutirawut, B. Domínguez, Y. Hou, Y. Noori, M. Tang, S. Chen, H. Liu, and F. Gardes, “Monolithic III-V/SiN co-integration through a butt-coupling scheme towards O-band applications,” in Semicond. Integr. Optoelectron. (SIOE), Cardiff, U.K., Apr. 2022.

      ·         F. Gardes, B. Domínguez, I. Skandalos, I. Chakraborty, T. Rutirawut, Y. Hou, Y. Noori, and L. Mastronardi, “Group IV compounds for CMOS photonics,” in Semicond. Integr. Optoelectron. (SIOE), Cardiff, U.K., Apr. 2022.

      2021

      ·         +F. Gardes, T. Bucio, L. Mastronardi, G. De Paoli, S. Jantzen, I. Skandalos, M. Milosevic, V. Vitali, J. Faneca, P. Petropoulos, F. Romero, J. Luque-González, I. Molina-Fernández, R. Halir, A. Ortega-Moñux, J. Wangüemert-Pérez, D. Melati, J. Schmid, and P. Cheben, “Tunable index silicon nitride for CMOS photonics applications,” in Integr. Opt.: Devices, Mater., Technol. XXV, Proc. SPIE, vol. 11689, Online Only, Mar. 2021, Art. no. 1168916, doi: 10.1117/12.2578387.

      ·         +S. Pan, J. Huang, Z. Zhou, Z. Liu, L. Ponnampalam, Z. Liu, M. Tang, M. Lo, Z. Cao, A. Seeds, H. Liu, and S. Chen, “Ultra-stable 25.5 GHz quantum dot mode-locked frequency comb operating up to 120°C,” in Conf. Lasers Electro-Opt. (CLEO), San Jose, CA, USA, May 2021, doi: 10.1364/CLEO_SI.2021.SF2F.3.

      ·         +N. Kryzhanovskaya, E. Moiseev, A. Nadtochiy, M. Maximov, A. Dragunova, M. Fetisova, M. Kulagina, Y. Guseva, S. Mintairov, N. Kalyuzhnyy, M. Tang, M. Liao, J. Wu, S. Chen, H. Liu, and A. Zhukov, “Monolithic and hybrid integration of InAs/GaAs quantum dot microdisk lasers on silicon,” in Integr. Opt.: Design, Devices, Syst. Appl. VI, Proc. SPIE, vol. 11775, 2021, doi: 10.1117/12.2589118.

      ·         +S. Ilie, P. Ginel-Moreno, J. Sagar, T. Bucio, A. Ortega-Monux, K. Lekkas, T. Rutirawut, L. Mastronardi, I. Skandalos, K. Grabska, I. Molina-Fernandez, G. Kanellos, P. Cheben, and F. Gardes, “Silicon nitride CMOS platform for integrated optical phased arrays applications,” in 17th IEEE Int. Conf. Group IV Photon. (GFP), Malaga, Spain, Dec. 2021, pp. 1–2, doi: 10.1109/GFP51802.2021.9673980.

      ·         *J. Mahoney, P. Smowton, B. Maglio, L. Jarvis, C. Allford, S. Shutts, M. Tang, H. Liu, and N. Abadía, “QCSE and carrier blocking in p-modulation doped InAs/InGaAs quantum dots,” in Conf. Lasers Electro-Opt. (CLEO): Sci. Innov., San Jose, CA, USA, May 2021, doi: 10.1364/CLEO_AT.2021.JTu3A.167.

      ·         +H. Li, T. Zhou, Z. Zhang, M. Tang, S. Chen, H. Liu, and Z. Zhang, “Microcavity lasers directly grown on silicon,” in Conf. Lasers Electro-Opt. (CLEO), San Jose, CA, USA, May 2021, doi: 10.1364/CLEO_SI.2021.STu2C.6.

      ·         *M. Dang, M. Tang, J. Yang, A. Seeds, S. Chen, and H. Liu, “InAs/GaAs quantum-dot lasers monolithically grown on on-axis silicon (001),” in IEEE Photon. Soc. Summer Top. Meeting Ser. (SUM), Jul. 2021, doi: 10.1109/SUM48717.2021.9505863.

      ·         *X. Yu, K. Li, J. Yang, Y. Lu, Z. Liu, M. Tang, P. Jurczak, J. Park, H. Deng, H. Jia, M. Dang, A. Sanchez, R. Beanland, W. Li, X. Han, J. Zhang, H. Wang, F. Liu, S. Chen, A. Seeds, P. Smowton, and H. Liu, “Inversion boundary annihilation in GaAs grown on on-axis silicon (001) via molecular beam epitaxy,” in Emerg. Appl. Silicon Photon. II, Proc. SPIE, vol. 11880, 2021, doi: 10.1117/12.2601451.

      ·         +Z. Zhang, Y. Huang, T. Zhou, M. Tang, S. Chen, and H. Liu, “Various microcavity lasers monolithically grown on planar on-axis Si (001) substrates,” in 30th Wireless Opt. Commun. Conf. (WOCC), Oct. 2021, p. 20, doi: 10.1109/WOCC53213.2021.9603110.

      ·         *B. Maglio, L. Jarvis, C. Allford, S. Gillgrass, S. Shutts, M. Tang, H. Liu, and P. Smowton, “The limits to peak modal gain in p-modulation doped indium arsenide quantum dot laser diodes,” in IEEE Photon. Conf. (IPC), Oct. 2021, doi: 10.1109/IPC48725.2021.9592852.

      ·         *B. Maglio, L. Jarvis, M. Tang, H. Liu, and P. Smowton, “Modeling the effects of p-modulation doping in InAs quantum dot devices,” in Int. Conf. Numer. Simul. Optoelectron. Devices (NUSOD), Sep. 2021, doi: 10.1109/NUSOD52207.2021.9541500.

      ·         +E. Tough, M. Fice, C. Renaud, J. Seddon, A. Seeds, C. Graham, K. Balakier, and G. Carpintero, “InP photonic integrated circuit for 6.7 GHz spaced optical frequency comb generator,” in Int. Top. Meeting Microw. Photon. (MWP), Pisa, Italy, Nov. 2021, pp. 1–4, doi: 10.1109/MWP53341.2021.9639427.

      ·         +Q. Cheng, M. Chen, M. Ayata, M. Holm, and R. Penty, “Towards a photonic integrated linear algebra processor for complex matrix multiplication and inversion,” in Photon. Switching Comput., Washington, DC, USA, Sep. 2021, paper M3B.3, doi: 10.1364/PSC.2021.M3B.3.

      ·         +J. Xia, T. Li, Q. Cheng, A. Wonfor, K. Bergman, and R. Penty, “Demonstration of novel silicon optical switching on digital radio over fibre link for next-generation fronthaul,” in Conf. Lasers Electro-Opt. (CLEO): Appl. Technol., San Jose, CA, USA, May 2021, paper AW4M.1, doi: 10.1364/CLEO_AT.2021.AW4M.1.

      ·         +J. Xia, T. Li, Q. Cheng, S. Yang, K. Bergman, and R. Penty, “Novel scalable and reconfigurable optical fronthaul network for converged radio frequency and data services using silicon photonic switching,” in Opt. Fiber Commun. Conf. (OFC), Washington, DC, USA, Jun. 2021, paper F1D.3, doi: 10.1364/OFC.2021.F1D.3.