visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Large-scale Silicon Photonic MEMS Switches

2016.09.28 19:50

Physics 조회 수:8995

날짜 2016-09-29 16:00 
연사  
장소 E6-2 #1323 (1st floor) 

Large-scale Silicon Photonic MEMS Switches


Sep. 29th(Thu), 4PM, E6-2 #1323 (1st floor)

Dr. Sangyoon Han, Department of Physics, KAIST

 

Abstract:

Fast optical-circuit-switches (OCS) having a large number of ports can significantly enhance the performance and the efficiency of modern data centers by actively rearranging network patterns. Commercially available optical switches operating with the use of moving mirror arrays have port counts exceeding 100x100 and insertion losses fewer than a few dBs. However, their switching speeds are typically tens-of-milliseconds which limits their applications in highly dynamic traffic patterns.

Recently, optical switches based on silicon photonics technology have been designed and built. Silicon photonic switches with microsecond or nanosecond response times have been demonstrated, and silicon photonic switches with integrated CMOS driving circuits have been demonstrated. However, the demonstrations were mostly limited to a small number of ports due to their cascaded 2x2 architecture which induces high optical losses as port-count increases. Moreover, the demonstrations were limited to single polarization operations, and narrow spectral bandwidths.

In this talk, I will introduce a new architecture for silicon photonic switches that is highly scalable (optical insertion loss < 1 dB regardless of port-count), polarization-insensitive (< 1dB of PDL), and ultra-broadband (~300nm). The new architecture uses a two-level waveguide-crossbar with moving waveguide couplers that configure light paths. Three experimental implementations of the new architecture with 50x50 ports will be shown in the talk.

 


Biography:

Sangyoon Han is a postdoctoral research associate in the Physics department at KAIST. He received his Ph.D. in Electrical Engineering and Computer Sciences from the University of California, Berkeley in 2016. He received his B.S. in Electrical Engineering from Seoul National University. He was a recipient of Korea Foundation for Advanced Studies Scholarship for study abroad, and he was a recipient of a graduate bronze medal from Collegiate Inventors Competition (USPTO sponsored) in 2015.

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
446 2025-02-17 16:00  Prof. Takehito Yokoyama  Unconventional spin-spin interaction mediated by Cooper pairs or phonons file
445 2018-11-22 15:00    Experimental and Computational Study on Physical Properties based on Granular System file
444 2021-02-17 09:00    석학 대중 강연 및 강의 시리즈 file
443 2019-04-04 16:00    Chiral spin-photon interaction at nanoscale file
442 2023-11-22 10:00    [High Energy Theory Seminar] Exact Quantum Algorithms to Recognize Quantum Phases of Matter
441 2019-05-24 16:00    Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
440 2023-06-16 13:00    Quantum critical states under extreme conditions
439 2019-12-05 16:00    Subwavelenth Photonic Devices: From Single Photon Sources to Solar Cell file
438 2018-10-04 16:00    Engineering light absorption in an ultrathin semiconductor metafilm file
437 2019-07-10 16:00    Public Lectures file
436 2019-07-16 16:00    2019 Physics Distinguished Lecture file
435 2019-12-18 16:00    Road to Higher Tc Superconductivity file
434 2016-06-14 15:00    No-Insulation High Temperature Superconductor Magnet Technology for Compact, Reliable, and Low-Cost High Field DC Magnets
433 2018-11-21 15:00    Engineering topological quantum physics at the atomic scale file
432 2022-04-08 11:00    (응집물리 세미나) Flat-surface-assisted physical phenomena occurring in single crystal metal thin film file
431 2019-10-29 10:00    Unconventional Spin Transport in Quantum Materials file
430 2021-02-02 14:30    Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
429 2018-11-23 15:00    Entanglement string and Spin Liquid with Holographic duality file
428 2018-06-22 10:00    Success in Research Career file
427 2016-04-18 15:30    First Principles Approaches for Intermolecular Interactions: From Gas-Phase Dimers to Liquid Water and Molecular Crystal Polymorphism file