visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Large-scale Silicon Photonic MEMS Switches

2016.09.28 19:50

Physics 조회 수:8798

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)
605 2019-09-18 16:00    Fall 2019: Physics Seminar Serises file
604 2019-09-02 16:00    Fall 2019: Physics Colloquium file
603 2024-01-26 15:00    In-situ 4D-STEM studies on surface reconstruction and polarization switching of perovskite oxides
602 2020-09-24 09:00    (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU file
601 2021-01-28 18:00    Quantum metamaterials: concept, theory, prototypes and possible applications file
600 2023-09-18 11:00    Magic polarisation trapping of polar molecules for tunable dipolar interactions file
599 2015-12-09 11:00    Functional Imaging & Monitoring of Brain & Breast with Diffuse Light
598 2015-12-09 14:00    SWELLABLE COLLOIDAL PARTICLES ARE SWELL
597 2020-09-28 17:30    KAIST Global Forum for Spin and Beyond(Fourth Forum) file
596 2024-03-28 11:00    Geometric characterization of thermoelectric performance of two-dimensional quadratic band-crossing semimetals
595 2023-01-12 16:00    Spin wavepackets in the Kagome ferromagnet Fe3Sn2: propagation and precursors
594 2021-04-19 19:00    Evidence of Electrical Switching in Antiferromagnets and Coherent Spin Pumping file
593 2017-12-14 15:00    Exploring the Universe via GWs in the era of multi-messenger astronomy
592 2019-10-25 15:00    Physics Seminar file
591 2024-11-21 11:00  Daniel L. Jafferis  3d Gravity and Tensor Model file
590 2023-10-04 16:00    [High-Energy Theory Seminar] Moving towards quantum technologies: the case of quantum batteries
589 2024-06-05 10:00    Moir\’e fractals in supermoir\’e structures
588 2016-12-12 13:30    “Possible symmetry in the phase diagrams of electron- & hole-doped cuprate high-Tc superconductors”
587 2025-06-05 10:00  Dr . On Kim (University of Mississippi)  The Final Result from the Muon g-2 Experiment at Fermilab: The World’s Most Precise Measurement of the Muon Magnetic Anomaly file
586 2016-04-06 15:30    Superconducting Quantum Interference Devices for Precision Detection