(광학분야 특별세미나)Adiabaticity and symmetry in optical waveguide design
2022.05.17 17:47
장소 | E6 1323 |
---|---|
일시 | 4pm, 28th April |
연사 | 유경식 (KAIST 전기및전자공학부) |
Title: Adiabaticity and symmetry in optical waveguide design
Speaker: 유경식 (KAIST 전기및전자공학부)
Date: 4pm, 28th April
Place: E6 1323 (Available seats can be limited because of the COVID situation.)
Abstract
'Adiabaticity' and 'shortcuts to adiabaticity' are important concepts in many aspects of modern physics. In this talk, we discuss two specific examples of optical waveguide designs that involve adiabatic photonic state evolutions with potential applications in photonic integrated circuits. The first example is highly-efficient broadband adiabatic mode transformation between single-mode optical fibers and integrated silicon waveguides. Based on adiabatic mode transformation through tapered optical waveguides, we show that high-efficiency optical energy transfer between dissimilar waveguides can be achieved for building seamless interfaces between heterogeneous photonic systems. The second example is strong time-asymmetric optical transmission near an exceptional point involving non-adiabatic state jumps. Using the conventional photonic integrated circuits platform, we experimentally verify that time-asymmetric responses can be obtained in a non-Hermitian dynamic system without encircling an exceptional point by carefully controlling evolution dynamics.
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
280 | Oct. 18 (Tue.), 1:30 PM | 1st fl. #1323(E6-2) | Dr. Chan-Ho Yang, Department of Physics, KAIST | "Visualization of oxygen vacancy in motion and the interplay with electronic conduction" |
279 | July 10 (Wed.), 04:00 PM- | Academic Cltural Complex (E9) 5층 스카이라운지 | Prof. Sidney Nagel/Young-Kee Kim |
Public Lectures
![]() |
278 | 2015/08/04, 11PM | B501, Room Red, KI bldg. 5nd fl. | Dr. Eric Jin Ser Lee(Univ. of Manitoba, Canada) | Propagation of ultrasound through two- and three-dimensional strongly scattering media |
277 | Jun. 1(Wed) 10:30 AM | BK21 Conference Room (#1318, E6-2) | Dr. Noriaki Horiuchi, Editor, Nature Photonics | Welcome to Nature Photonics |
276 | October 15, 2020 (Thursday | CAPP Seminar Room #C303, Creation Hall (3F), KAIST Munji Campus | Prof. Gil-Ho Lee (POSTECH) |
Graphene-based Josephson junction microwave bolometer
![]() |
275 | July 21, 2022 (Thu) 4:00 PM(KST) | CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus | Prof. Jihn E. Kim (Kyoung Hee University) |
Quintessential axions
![]() |
274 | 2015/03/13, 2PM | Connect Room, KI Bldg. |
The 15th Innovative Workshop on Soft/Bio Materials
![]() | |
273 | 2015/12/09, 11AM | E4(KI Building), Connect room (2nd fl.) | Arjun G. Yodh (University of Pennsylvania) | Functional Imaging & Monitoring of Brain & Breast with Diffuse Light |
272 | 2015/12/17, 11:00AM | E4(KI Building), Matrix Hall (2nd fl.) | Dr. Jung-Hoon Park (Purdue University) | Wavefront engineering for in-vivo Deep brain imaging |
271 | 2015/07/23,1:30PM | E4, B401 | Prof. Gilles Lérondel (Univ. of Technology of Troyes) |
Enhanced ZnO based UV photonics and related applications
![]() |
270 | Apr. 13(Wed.) 10:30Am | E6 #1323/zoom | Mingu Kang (Max Planck POSTECH Korea Research Initiative) | Harnessing topology and correlations from singularities in 3d-kagome metals |
269 | Jan. 26th (Tue), 13:00 | E6 #1501 | Dr. Hyojin Jung (NIMS) |
An Introduction to Cohomology groups
![]() |
268 | Jan. 11th(Tue), 15:00 | E6 #1501 | Soyeun Kim(UIUC) |
Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I
![]() |
267 | Aug. 1st(Mon), 10:00AM | E6 #1501 & Zoom | 손상모 박사(Space Telescope Science Institute (STScI) | James Webb Space Telescope & OTE Commissioning |
266 | Jul. 14th (THU), 15:00 | E6 #1501 & Zoom | Dr. Sunghun Kim(Institute of Natural Science, KAIST) | Pure two-dimensional quantum electron liquid and its phase transition |
265 | Jul. 14th (THU), 14:15 | E6 #1501 & Zoom | Dr. Hyeong Jun LEE(Institute of Natural Science, KAIST) | Hund and electronic correlations in ruthenium-based systems |
264 | Jul. 14th (THU), 13:30 | E6 #1501 & Zoom | Dr. Jahyun Koo(Institute of Natural Science, KAIST) | Electronic structure and anomalous transport properties of topological materials by first principle calculation |
263 | Jan. 25th (Tue), 15:00 | E6 #1501/online | Junhyun Lee (Rutgers, the State University of New Jersey) |
Emulating twisted double bilayer graphene with a multiorbital optical lattice
![]() |
262 | 10AM, 31th Mar. | E6 #1501/zoom | Dr. Samuel Begg (APCTP) |
Weiss fields for Quantum Spin Dynamics
![]() |
261 | 10AM, 29th Mar. / 13:30 PM, 30th Mar. | E6 #1501/zoom, E6 #2502/zoom | Dr. RYO HANAI (APCTP) |
Non-reciprocal phase transitions
![]() |