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 Journal Publications

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  1. D. Choi, Y. J. Park, M. J. Her, and S. Han*, “MEMS actuators for tunable waveguide devices in photonic integrated circuits: a brief review,” Current Optics and Photonics, 2025.

  2. H. Lee, S. Song, J. Yea, J. Ha, S. Oh, J. Jekal, M. S. Hong, C. Won, H. H. Jung, H. Keum, S. Han, J. H. Cho, T. Lee, and K.-I. Jang, “Vialess heterogeneous skin patch for multimodal monitoring and stimulation,” Nature Communications, 2025.

  3. Y. Park, M. Her, Y. Jeong, D. Choi, D. Kim, M. Lim, M. Hong, H. Kwon, K. Yu*, and S. Han*, "Fully tunable Fabry-Pérot cavity based on MEMS Sagnac loop reflector with ultra-low static power consumption", Microsystems & nanoengineering, 2024 

  4. Min G.Lim, Dong U. Kim, Young J. Park, Dong J. Choi, Youngjae Jeong, Yoonhyuk Rah, Myung S.Hong, Kyoungsik Yu, Kwang-Yong Jeong*, and Sangyoon Han*, "Controlling Four-Wave Mixing through Full Tunability of MEMS-Based Photonic Molecules", ACS Photonics (supplementary cover), 2024

  5. D. U. Kim, Y. J. Park, D. Y. Kim, Y. Jeong, M. G. Lim, M. S. Hong, M. J. Her, Y. Rah, D. J. Choi, S. Han*, and K. Yu*, "Programmable photonic arrays based on microelectromechanical elements with femtowatt-level standby power consumption", Nature Photonics, 2023

  6. MG Lim, YJ Park, DJ Choi, DU Kim, MS Hong, MJ Her, A. Y. Takabayashi, Yj Jeong, JW Park, SJ Han, N. Quack, Y. Bae, K. Yu*, and S Han*, "Fully reconfigurable MEMS-based second-order coupled-resonator optical waveguide (CROW) with ultra-low tuning energy", Optics Express, 2023

  7. MS Hong, MG Lim, DU Kim, MJ Her, YJ Park, DJ Choi, Yj Jeong, JW Park, SJ Han, YH Chun, SC Eom, SY Oh, K. Yu, and S Han*, "Programmable MZI based on a silicon photonic MEMS-tunable delay line", Optics Letters, 2023

  8. YH Rah, Yj Jeong, S Han, and K. Yu, "Low Power Coherent Ising Machine Based on Mechanical Kerr Nonlinearity", Physical Review Letters, 2023

  9. D Kim†, S Han†, DG Kim, K Ko, DY Choi, and H Lee, "Two-point coupling method to independently control coupling efficiency at different wavelengths", Optics Letters, 2022

  10. IK Kim, DU Kim, VH Nguyen, S Han*, and TJ Seok*, "High-performance and compact silicon photonic 3-dB adiabatic coupler based on shortest mode transformer method", IEEE Photonics Journal, 2021

  11. J Hwang, DG Kim, S Han, D Jeong, YH Lee, DY Choi, and H Lee, "Supercontinuum generation in As2S3 waveguides fabricated without direct etching", Optics Letters, 2021

  12. S. Han*, J. Beguelin*, L. Ochikubo, J. Jacobs, T. J. Seok, K. Yu, N. Quack, C.-K. Kim, R. S. Muller, and M. C. Wu, "32 × 32 silicon photonic MEMS switch with gap-adjustable directional couplers fabricated in commercial CMOS foundry", Journal of Optical Microsystems, 2021

  13. D.-G. Kim†, S. Han†, J. Hwang, I. H. Do, D. Jeong, J.-H. Lim, Y.-H. Lee, M. Choi, Y.-H. Lee, D.-Y. Choi, and H. Lee, "Universal light-guiding geometry for on-chip resonators having extremely high Q-factor", Nature Communications, 2020

  14. H. Sattari, T. Graziosi, M. Kiss, T. J. Seok, S. Han, M. C. Wu, and N. Quack, "Silicon photonic MEMS phase-shifter", Optics Express, 2019

  15. S. Han, T. J. Seok, C. -K. Kim, R. S. Muller, and M. C. Wu, "Multicast silicon photonic MEMS switches with gap-adjustable directional couplers", Optics Express, 2019

  16. S. J. Yoon, J. Lee, S. Han, C. K. Kim, C. W. Ahn, M. K. Kim, and Y. H. Lee, "Non-fluorescent nanoscopic monitoring of a single trapped nanoparticle via nonlinear point sources", Nature Communications, 2019

  17. S.Han, T. J. Seok, K.Yu, N. Quack, R. S. Muller, and M. C. Wu, "Large-scale polarization-insensitive silicon photonic MEMS switches", Journal of Lightwave Technology, 2018

  18. H. Y. Hwang, J. S. Lee, T. J. Seok, A. Forencich, H. R. Grant, D. Knutson, N. Quack, S. Han, R. S. Muller, G. C. Papen, M. C. Wu, and P. O'. Brien, "Flip chip packaging of digital silicon photonics MEMS switch for cloud computing and data centre", IEEE Photonics Journal, 2017

  19. N. Quack, T. J. Seok, S. Han, R. S. Muller, and M. C. Wu, "Scalable row/column addressing of silicon photonic MEMS switches", IEEE Photonics Technology Letters, 2016

  20. T. J. Seok, N. Quack, S. Han, R. S. Muller, and M. C. Wu, "Large-scale broadband digital silicon photonic switches with vertical adiabatic couplers", Optica, 2016

  21. T. J. Seok, N. Quack, S. Han, R. S. Muller, and M. C. Wu, "Highly scalable digital silicon photonic MEMS switches", Journal of Lightwave Technology, 2015

  22. S. Han, T. J. Seok, N. Quack, B. W. Yoo, and M. C. Wu, "Large-scale silicon photonic switches with movable directional couplers", Optica, 2015

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 Conference Publications

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  1. S.-C. Eom, S. Oh, Y. Chun, H.-S. Kwon, S. Han, and Y. Bae, "Development of a Simulation Tool for Parameter Optimization of MEMS Field-Programmable Photonic Gate Arrays (FPPGA)", The Journal of the Institute of Internet, Broadcasting and Communication, 2025.

  2. L. Vatandoust, J. H. Kim, S. Gupta, M. M. I. Tusher, H.-M. Moon, M. Merklein, S. Han, and N. Quack, "Dimensional Tolerance Analysis for 50 GHz 12-Channel Silicon Arrayed Waveguide Grating", 2025 International Conference on Optical MEMS and Nanophotonics (OMN), 2025.

  3. S. Nam, D. Choi, S. Han, and J. Yu, "Silicon Photonics MEMS Platform-based Optomechanical Ultrasound Sensor Array for 3D Photoacoustic Deep Brain Region Imaging", Microscopy Histopathology and Analytics, 2024.

  4. J.H. Kim, D. U. Kim, M. G. Lim, Y. J. Park, D. J. Choi, M. S. Hong, K. Yu, S. Han*, “Reliability assessment of a fully packaged 1x12 silicon photonic MEMS multicast switch,” SPIE Photonics West, 2024. (invited talk).

  5. D. U. Kim, M. G. Lim, Y. J. Park, D. J. Choi, M. S. Hong, D. Kim, I.-W. Kim, H. Jung, Y.-S. Kim, H.-T. Lim, K. Yu, S. Han*, “Ultra-low power and high-performance tunable MZI on silicon photonics MEMS platform for quantum photonic applications,” SPIE Photonics West, 2024. (invited talk).

  6. M. G. Lim, D. J. Choi, D. U. Kim, Y. J. Park, K.Yu, S. Han*, and K. W. Jeong, "The Manipulation of Four-Wave Mixing in a Fully Tunable MEMS Photonic Molecule", Frontiers in Optics + Laser Science, 2023

  7. D. U. Kim, M. G. Lim, D. J. Choi, Y. J. Park, M. J. Her, M. S. Hong, Y. J. Jeong, K. Yu*, and S. Han*, "High-Extinction Reconfigurable Mach-Zehnder Interferometer Based on Silicon Photonic MEMS", The European Conference on Lasers and Electro-Optics (CLEO/Europe), 2023

  8. M. G. Lim, Y. J. Jeong, D. U. Kim, Y. J. Park, M. J. Her, M. S. Hong, D. J. Choi, J. H. Kim, K.Yu**, and S. Han*, "Sub-Micron-Thick Electrostatic MEMS Platform for Power Efficient Silicon Photonic Circuits", 2023 IEEE 18th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2023

  9. D. J. Choi, S. W. Nam, M. G. Lim, Y. J. Park, M. J. Her, D. U. Kim, H. J Seong, S. Han*, and J. S. Yu*, "Optical Ultrasound Sensor Based on Silicon Photonic MEMS Cantilever with Tunable Dynamic Range", 2023 IEEE 18th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2023

  10. Y. J. Park, M. J. Her, D. U. Kim, D. J. Choi, M. G. Lim, M. S. Hong, and S. Han*, "Fully Tunable Fabry-Pérot Cavity based on Silicon Photonic MEMS with 10 nW Static Power Consumption", Conference on Lasers and Electro-Optics (CLEO), 2023

  11. M. S. Hong, D. U. Kim, M. G. Lim, D. J. Choi, M. J. Her, Y. J. Park, Y. J. Jeong, J. W. Park, S. J. Han, K.Yu*, and S. Han*, "Programmable MZI Based on Si Photonic MEMS Tunable Delay Line", Conference on Lasers and Electro-Optics Pacific Rim(CLEO-PR), 2022

  12. D. J. Choi, S. W. Nam, D. U. Kim, Y. J. Park, M. J. Her, M. G. Lim, M. S. Hong, H. J. Song, J. S. Yu*, and S. Han*, "Fully Tunable Sagnac Loop Reflector with 0.1 uW Static Power Silicon Photonic MEMS", Conference on Lasers and Electro-Optics (CLEO), 2022

  13. D. U. Kim, D. Y. Kim, Y. J. Jeong, D. J. Choi, Y. J. Park, M. J. Her, M. S. Hong, M. G. Lim, Y. H. Rah,  K.Yu* and S. Han*, "Ultra-Low-Power Unitary Matrix Multiplier Based on Silicon Photonic MEMS", Conference on Lasers and Electro-Optics (CLEO), 2022

  14. D. U. Kim, M. S. Hong, D. Y. Kim, Y. Park, A. Y. Takabayashi, Y. J. Jeong, J. W. Park, S. J. Han, N. Quack*, K.Yu*, and S. Han*, "8 × 8 Programmable Multi-Beam Pattern Projection Based on Multicast Silicon Photonic MEMS Switches", Optical Fiber Communication Conference and Exposition (OFC), 2021

  15. D. Y. Kim, Y. Park, D. U. Kim, M. S. Hong, A. Y. Takabayashi, Y. J. Jeong, J. W. Park, S. J. Han, N. Quack*, K.Yu* and S. Han*, "16-Core Recirculating Programmable Si Photonic MEMS", Conference on Lasers and Electro-Optics (CLEO), 2021

  16. Y. J. Park, D. U. Kim, D. Y. Kim, M. S. Hong, A. Y. Takabayashi, Y. J. Jeong, J. W. Park, S. J. Han, N. Quack*, K.Yu and S. Han*, "Fully Reconfigurable Coupled-Resonator Optical Waveguides (CROWs) with 10nW Static Power MEMS", Conference on Lasers and Electro-Optics (CLEO), 2021

  17. D. -Y. Choi, S. Han, J. Hwang, Y. -H. Lee, D. -G. Kim, I. H. Do, D. Jeong, and H. Lee, "Chalcogenide-silica hybrid planar platform for high performance nonlinear optic devices", OSA Laser Congress, 2019

  18. S. Han, D. -G. Kim, J. Hwang, I. H. Do, D. Jeong, Y. -H. Lee, D. -Y. Choi, and H. Lee, "Brillouin lasers based on 11 million-Q on-chip chalcogenide resonators without direct etch process", International Conference on Optical MEMS and Nanophotonics (OMN), 2019

  19. S. Han, D. -G. Kim, J. Hwang, I. H. Do, D. Jeong, Y. -H. Lee, D. -Y. Choi, and H. Lee, "On-chip stimulated Brillouin lasers based on chalcogenide glass resonators with 10 million Q-factor", Conference on Lasers and Electro-Optics (CLEO), 2019

  20. N. Quack, T. J. Seok, S. Han, H. Sattari, T. Graziosi, M. Kiss, R. S. Muller, and M. C. Wu, "Surface micromachined silicon photonic MEMS: a scalable technology platform for photonic network components", Photonic Networks and Devices, 2018

  21. T. Graziosi, H. Sattari, T. J. Seok, S. Han, M. C. Wu, and N. Quack, "Silicon photonic MEMS variable optical attenuator", Proceedings of SPIE: MOEMS and Miniaturized Systems XVII, 2018

  22. H. Sattari, T. Graziosi, M. Kiss, T. J. Seok, S. Han, M. C. Wu, and N. Quack, "Analog silicon photonic MEMS phase-shifter with double-step electrostatic actuation", International Conference on Optical MEMS and Nanophotonics (OMN), 2017

  23. T. J. Seok, S. Han, and M. C. Wu, "Large-scale silicon photonic switches with MEMS", IEEE Photonics Society Summer Topical Meeting Series (SUM), 2017

  24. M. C. Wu, T. J. Seok, and S. Han, "Silicon photonic switches for datacenters", Frontiers in Optics, 2016

  25. T. J. Seok, H. Y. Hwang, J. S. Lee, A. Forencich, H. R. Grant, D. Knutson, N. Quack, S. Han, R. S. Muller, L. Carroll, G. C. Papen, P. O'Brien, and M. C. Wu, "12× 12 packaged digital silicon photonic MEMS switches", IEEE Photonics Conference (IPC), 2016

  26. S. Han, T. J. Seok, K. Yu, N. Quack, R. S. Muller, and M. C. Wu, "50x50 polarization-insensitive silicon photonic MEMS switches: design and experiment", European Conference on Optical Communication (ECOC), 2016

  27. J. Jacobs, T. Graziosi, M. Kiss, S. Han, T. J. Seok, M. C. Wu, and N. Quack, "Die level release of silicon photonic MEMS", International Conference on Optical MEMS and Nanophotonics (OMN), 2016

  28. M. C. Wu, T. J. Seok, S. Han, and N. Quack, "MEMS-enabled scalable silicon photonic switches", Frontiers in Optics, 2015

  29. T. J. Seok, N. Quack, S. Han, W. Zhang, R. S. Muller, and M. C. Wu, "64× 64 low-loss and broadband digital silicon photonic MEMS switches", European Conference on Optical Communication (ECOC), 2015

  30. M. C. Wu, T. J. Seok, S. Han, and N. Quack, "Large-scale, MEMS-actauated silicon photonic switches", International Conference on Photonics in Switching (PS), 2015

  31. T. J. Seok, N. Quack, S. Han, W. Zhang, R. S. Muller, and M. C. Wu, "Reliability study of digital silicon photonic MEMS switches", International Conference on Group IV Photonics (GFP), 2015

  32. N. Quack, T. J. Seok, S. Han, W. Zhang, R. S. Muller, and M. C. Wu, "Row/column addressing of scalable silicon photonic MEMS switches", International Conference on Optical MEMS and Nanophotonics (OMN), 2015

  33. S. Han, T. J. Seok, C. K. Kim, R. S. Muller, and M. C. Wu, "Multicast 4× 20 silicon photonic MEMS switches", Conference on Lasers and Electro-Optics (CLEO), 2015

  34. M. C. Wu, S. Han, T. J. Seok, and N. Quack, "Large-port-count MEMS silicon photonics switches", Optical Fiber Communications Conference and Exhibition (OFC), 2015

  35. T. J. Seok, N. Quack, S. Han, and M. C. Wu, "50× 50 digital silicon photonic switches with MEMS-actuated adiabatic couplers", Optical Fiber Communications Conference (OFC), 2015

  36. M. C. Wu, S. Han, T. J. Seok, and N. Quack, "Monolithic large-scale optical switches using silicon photonic MEMS", OptoElectronics and Communication Conference (OECC), 2014

  37. N. Quack, J. Ferrara, S. Gambini, S. Han, C. Keraly, P. Qiao, Y. Rao, P. Sandborn, L. Zhu, S. -L. Chuang, E. Yablonovitch, B. Boser, C. Chang-Hasnain, and M. C. Wu, "Development of an FMCW LADAR source chip using MEMS-electronic-photonic heterogeneous integration", GOMACTech Conference, 2014

  38. S. Han, T. J. Seok, N. Quack, B. -W. Yoo, and M. C. Wu, "Monolithic 50× 50 MEMS silicon photonic switches with microsecond response time", Optical Fiber Communications Conference (OFC), 2014

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 Patents

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- M. C. Wu, S. Han, T. J. Seok, N. Quack, B. -W. Yoo, “Silicon-photonics-based optical switch,” US patent, 2018, US10061085B2

- T. J. Seok, S. Han, M. C. Wu, “Silicon-photonics-based optical switch with low polarization sensitivity”, US patent, 2019, US20190253775A1

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