Zobrazeno 1 - 10
of 76
pro vyhledávání: '"George F. R. Chen"'
Autor:
Byoung-Uk Sohn, Yue-Xin Huang, Ju Won Choi, George F. R. Chen, Doris K. T. Ng, Shengyuan A. Yang, Dawn T. H. Tan
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Here the authors report the development of a topological nonlinear parametric amplification in a dimerized, Su-Schrieffer-Heeger waveguide. Kerr-induced chiral symmetry breaking is demonstrated, showcasing how nonlinearities may control transitions o
Externí odkaz:
https://doaj.org/article/c17a9bc74b134712a5cb8c1f0d7b3a77
Autor:
Xavier X. Chia, George F. R. Chen, Yanmei Cao, Peng Xing, Hongwei Gao, Doris K. T. Ng, Dawn T. H. Tan
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-10 (2022)
Abstract Chemical vapor deposition-based growth techniques allow flexible design of complementary metal-oxide semiconductor (CMOS) compatible materials. Here, we report the deuterated silicon-rich nitride films grown using plasma-enhanced chemical va
Externí odkaz:
https://doaj.org/article/9531e0035be24a07a670a6e75dde0bbd
Autor:
Yanmei Cao, Byoung-Uk Sohn, Hongwei Gao, Peng Xing, George F. R. Chen, Doris K. T. Ng, Dawn T. H. Tan
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)
Abstract Supercontinuum generation is demonstrated in a 3-mm-long ultra-silicon-rich nitride (USRN) waveguide by launching 500 fs pulses centered at 1555 nm with a pulse energy of 17 pJ. The generated supercontinuum is experimentally characterized to
Externí odkaz:
https://doaj.org/article/ea10b0e055884bbf9ab2b15ffb0766ee
Autor:
Doris K. T. Ng, Hongwei Gao, Peng Xing, George F. R. Chen, Xavier X. Chia, Yanmei Cao, Kenny Y. K. Ong, Dawn T. H. Tan
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-13 (2022)
Abstract Ultra-silicon-rich nitride with refractive indices ~ 3 possesses high nonlinear refractive index—100× higher than stoichiometric silicon nitride and presents absence of two-photon absorption, making it attractive to be used in nonlinear i
Externí odkaz:
https://doaj.org/article/ed75606e91c442578cf4ffb65a59b9dd
Autor:
Ju Won Choi, Ezgi Sahin, Byoung-Uk Sohn, George F. R. Chen, Doris K. T. Ng, Anuradha M. Agarwal, Lionel C. Kimerling, Dawn T. H. Tan
Publikováno v:
Light: Science & Applications, Vol 10, Iss 1, Pp 1-15 (2021)
Abstract Optical pulses are fundamentally defined by their temporal and spectral properties. The ability to control pulse properties allows practitioners to efficiently leverage them for advanced metrology, high speed optical communications and attos
Externí odkaz:
https://doaj.org/article/2e93495bbf254dd79fbe3ec06558dbfd
Autor:
Ezgi Sahin, Andrea Blanco-Redondo, Byoung-Uk Sohn, Yanmei Cao, George F. R. Chen, Doris K. T. Ng, Benjamin J. Eggleton, Dawn T. H. Tan
Publikováno v:
Advanced Photonics Research, Vol 2, Iss 8, Pp n/a-n/a (2021)
Supercontinuum generation (SCG) through soliton fission provides high‐brightness, spectrally‐rich light needed for hyperspectral imaging, broadband spectroscopy, and fluorescence microscopy. The prospect of miniaturization has led to many demonst
Externí odkaz:
https://doaj.org/article/17c3dc1198f84ed9b7eee4a5be082cca
Publikováno v:
APL Photonics, Vol 4, Iss 11, Pp 110804-110804-7 (2019)
The formation of optical solitons arises from the simultaneous presence of dispersive and nonlinear properties within a propagation medium. Chip-scale devices that support optical solitons harness high field confinement and flexibility in dispersion
Externí odkaz:
https://doaj.org/article/93217a5709174ca895e1ecd467af7530
Autor:
George F. R. Chen, Jun Rong Ong, Thomas Y. L. Ang, Soon Thor Lim, Ching Eng Png, Dawn T. H. Tan
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract Broadband Silicon-On-Insulator (SOI) directional couplers are designed based on a combination of curved and straight coupled waveguide sections. A design methodology based on the transfer matrix method (TMM) is used to determine the required
Externí odkaz:
https://doaj.org/article/5100c2ccba664fba83b4caac3ae0937c
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract On-chip waveguide amplifiers offer higher gain in small device sizes and better integration with photonic devices than the commonly available fiber amplifiers. However, on-chip amplifiers have yet to make its way into the mainstream due to t
Externí odkaz:
https://doaj.org/article/816b1aed80694a02bc676ab3fff9d1f1
Autor:
Ju Won Choi, Byoung-Uk Sohn, Ezgi Sahin, George F. R. Chen, Peng Xing, Doris K. T. Ng, Benjamin J. Eggleton, Dawn T. H. Tan
Publikováno v:
Nanophotonics. 12:1421-1433
Nonlinear propagation in periodic media has been studied for decades, yielding demonstrations of numerous phenomena including strong temporal compression and slow light generation. Gap solitons, that propagate at frequencies inside the stopband, have