visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Large-scale Silicon Photonic MEMS Switches

2016.09.28 19:50

Physics 조회 수:8734

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)
414 2018-12-07 14:30    Spin generation from heat and light in metals file
413 2018-12-07 16:00    Novel probes of interacting electrons in 2D systems file
412 2018-12-11 16:00    Natural compact representation of Matsubara Green’s functions: applications to analytic continuation and quantum many-body simulations file
411 2018-12-16 16:00    Lectures on 2d Conformal Field Theory file
410 2018-12-26 16:00    Informal Workshop on Topology and Correlation file
409 2018-12-26 16:00    Brane-like defect in 3D toric code file
408 2018-12-27 16:00    Quantum Innovation (QuIN) Laboratory file
407 2019-01-07 15:00    Many-Body Invariants for Multipoles in Higher-Order Topological Insulators file
406 2019-01-09 16:00    Molecular Mott state in the deficient spinel GaV4S8 file
405 2019-01-23 16:00    Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors file
404 2019-02-21 16:00    B-meson charged current anomalies - Theoretical status file
403 2019-02-25 16:00    Spring 2019: Physics Colloquium file
402 2019-03-21 16:00    Spring 2019: Physics Seminar Serises file
401 2019-03-26 15:00    Consideration of thermal Hall effect in frustrated and un-frustrated quantum magnets file
400 2019-03-29 14:30    Epitaxial Multifunctional Oxide Thin Films for Novel Electronics file
399 2019-03-29 16:00    Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
398 2019-04-04 16:00    Chiral spin-photon interaction at nanoscale file
397 2019-04-11 16:00    Massive screening for cathode active materials using deep neural network file
396 2019-04-19 11:00    First-principles studies of semiconductors for solar cell applications file
395 2019-04-19 14:30    A family of finite-temperature electronic phase transitions in graphene multilayers file