visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Large-scale Silicon Photonic MEMS Switches

2016.09.28 19:50

Physics 조회 수:1572

날짜 2016-09-29 16:00 
일시 Sep. 29th(Thu), 4PM 
장소 E6-2 #1323 (1st floor) 
연사 Dr. Sangyoon Han, Department of Physics, KAIST 

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 장소 제목
216 2023-06-14 16:00  E6-2, #2502  [High-Energy Theory Seminar]Vertex algebras and extended operators in 4d N=2 SCFTs
215 2023-06-16 13:00  E6-2, #2502  Quantum critical states under extreme conditions
214 2023-11-01 16:00  E6-2, #2502  [High Energy Theory Seminar] Modular functions and 3D N=4 rank-zero superconformal field theories
213 2023-08-29 16:00  E6-2, #2502  [High Energy Theory Seminar] Towards string loop corrections in Calabi-Yau orientifold compactifications.
212 2023-06-01 16:00  E6-2, #5301  Hall viscosity and topological phenomena
211 2023-11-22 10:00  E6-2, #5301 & zoom  [High Energy Theory Seminar] Exact Quantum Algorithms to Recognize Quantum Phases of Matter
210 2020-02-12 13:00  E6-2, #5318  From inflation to new weak-scale file
209 2015-11-06 16:30  E6-2, #5318  Topological Dirac line nodes in centrosymmetric semimetals
208 2015-10-23 15:00  E6-2, #5318  Development of a Rogowski Coil as a new beam position monitor
207 2015-07-16 16:00  E6-2, 1318  Next-generation ultrafast laser technology for nonlinear optics and strong-field physics
206 2015-07-16 16:00  E6-2, 1501  KAIST Physics Distinguished Lecture
205 2016-03-11 13:30  E6-2, 1501 외  Physics Seminar Serises : 2016 Spring file
204 2019-07-03 15:00  E6-2, 2501  Many-body quantum electrodynamis (QED) with atoms and photons: A new platform for quantum optics" file
203 2018-06-14 10:00  E6-2, 2nd fl. #2502  Phonons and polariton-like particles in trapped ions for quantum computation and quantum simulation file
202 2015-10-16 15:00  E6-2, 5th fl. #5318  High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble
201 2015-10-15 10:00  E6-2, 5th fl. #5318  Development of Large-Bore, High Field Magnets at the NHMFL
200 2017-12-15 09:20  E6-2, Lecture Room #1323  Workshop on Magnetism in Unconventional Superconductors 개최 file
199 2016-04-06 15:30  E6-2, RM #1323  Superconducting Quantum Interference Devices for Precision Detection
198 2023-12-08 10:30  E6-2, Rm#2502  Novel transport phenomena in insulators
197 2023-10-11 16:00  E6-2, Rm2502  [High Energy Theory Seminar] Axion Magnetic Resonance