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Alex K.-Y. Jen
Researcher at City University of Hong Kong
Publications - 973
Citations - 72195
Alex K.-Y. Jen is an academic researcher from City University of Hong Kong. The author has contributed to research in topics: Perovskite (structure) & Polymer. The author has an hindex of 128, co-authored 921 publications receiving 61811 citations. Previous affiliations of Alex K.-Y. Jen include University of Nebraska–Lincoln & Zhejiang California International NanoSystems Institute.
Papers
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Journal ArticleDOI
Feature issue introduction: organic and polymeric materials for photonic applications
TL;DR: The proceedings of ICFPAM 2016 with a special issue themed on organic and polymeric photonics are presented in this paper, where major topics of current and future interest in polymer science, advanced materials and technologies are discussed.
Proceedings ArticleDOI
Nonlinear spectra/dispersion of quinolinium dyes using dual-arm Z-scan
Trenton R. Ensley,Honghua Hu,Zhong'an Li,Sei-Hum Jang,Alex K.-Y. Jen,David J. Hagan,Eric W. Van Stryland +6 more
TL;DR: In this paper, two-photon absorption spectra and nonlinear refraction dispersion of quinolinium heptamethine cyanine dyes measured using a dual-arm Z-scan and fit of spectra with an essential-state model were reported.
Proceedings ArticleDOI
Electrical and electro-optic characterization of nonlinear polymer thin films on silicon substrate
TL;DR: In this article, electrical and electro-optical measurements of polymer thin films on silicon substrates were performed to analyze the conduction mechanisms inside the polymer film and different models were discussed in order to explain the differences in current density during poling between indium tin oxide (ITO) coated glass substrates and silicon substrate.
Proceedings ArticleDOI
Domain-inversion-equivalent EO polymer based Y-fed directional coupler modulator with high linearity
TL;DR: In this paper, a novel Y-branch directional coupler modulator (YDCM) with high linearity based on domain-inverted modulation was fabricated and tested, and a two-tone test was performed to demonstrate the improvement of linearity of four-domain YDCM over two-domain DDCM.
Proceedings ArticleDOI
Electro-optic polymer waveguide ring resonators defined with three electron beam irradiation effects
Haishan Sun,Antao Chen,Benjamin C. Olbricht,Joshua A. Davies,Phil Sullivan,Yi Liao,Zhengwei Shi,Jingdong Luo,Alex K.-Y. Jen,Larry R. Dalton +9 more
TL;DR: With increasing doses, irradiation of electron beam on chromophore doped polymers has the effects of depoling, bleaching and decomposition, which were exploited to directly fabricate high quality electro-optic polymer ring resonators with submicron features.