visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Large-scale Silicon Photonic MEMS Switches

2016.09.28 19:50

Physics 조회 수:8966

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)
175 2023-02-28 11:00    Topotactic redox engineering toward novel material file
174 2023-03-02 11:00    Probing Anomalies of Non-Invertible Symmetries with Symmetry TFTs
173 2023-03-16 16:00    (광학분야 세미나) Investigation of 3D cell mechanics using refractive-index tomography
172 2023-03-16 16:00    2023 봄학기 광학분야 및 응집물리 특별세미나 전체 일정 file
171 2023-03-17 11:00    (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
170 2023-03-22 16:00    (High Energy Theory Seminar) Boltzmann or Bogoliubov? A Case of Gravitational Particle Production
169 2023-03-24 11:00    (응집물리 세미나)Floquet simulators of topological surface states in isolation
168 2023-03-27 15:00    A coherent mechanical oscillator pumped by a suspended quantum dot file
167 2023-03-30 16:00    Detecting axions with chiral magnetic effects file
166 2023-03-30 16:00    (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
165 2023-04-04 16:00    Chiral Magnetism: A Geometric Perspective
164 2023-04-05 16:00    [High Energy Theory Seminar]Anomalies of Discrete 1-Form Symmetries in QCD-like Theories
163 2023-04-06 16:00    (광학분야 세미나)Nanophotonics-based approaches to explore Berry physics
162 2023-04-13 11:00    [High Energy Theory Seminar]Noninvertible Gauss Law and Axions
161 2023-04-14 12:00    (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
160 2023-04-27 11:00    Inverse Shapiro steps and coherent quantum phase slip in superconducting nanowires
159 2023-04-27 16:00    (광학분야 세미나)On-chip spectrometers based on CMOS image sensors
158 2023-04-28 11:00    Tkachenko wave: From the modern field theory viewpoint
157 2023-05-03 16:00    Probing microscopic origins of axions by the chiral magnetic effect
156 2023-05-12 11:00    (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems