Dr. Tianren Fan Profile

Dr. Tianren Fan

Optical Network Engineer at Amazon Web Services

SPIE Involvement:

Editorial Board Member: Journal of Nanophotonics | Author

Area of Expertise:

Integrated Photonics , Nonlinear Photonics , Quantum Photonics , Nanotechnology , Silicon Carbide , 2D Materials

Websites:

Personal Website

Publications (8)

Proceedings Article | 17 March 2023 Presentation

Optical Kerr effect in harmonic generation metasurfaces featuring quasibound states of continuum

Muliang Zhu, Chentao Li, Sajjad Abdollahramezani, Tianren Fan, Xi Wu, Todd Walters, Devin Brown, Kirsten Masselink, Yolande Berta, Hayk Harutyunyan, Ali Adibi

Proceedings Volume PC12431, PC1243111 (2023) https://doi.org/10.1117/12.2661615

KEYWORDS: Harmonic generation, Amorphous silicon, Third-harmonic generation, Spectroscopy, Refractive index, Photonics, Nonlinear optics, Near infrared, Nanophotonics, Kerr effect

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SPIE Journal Paper | 9 July 2022

Polymer waveguide photonic interconnect for multichip communications-based heterogeneous integration

Rakesh M. Krishna, Rui Zhang, Siddharth Ravichandran, Tianren Fan, Amir H. Hosseinnia, Jose Lopez-Ninantay, Fuhan Liu, Mohan Kathaperumal, Madhavan Swaminathan, Ali Adibi

JNP, Vol. 16, Issue 03, 036002, (July 2022) https://doi.org/10.1117/12.10.1117/1.JNP.16.036002

KEYWORDS: Waveguides, Silicon, Polymers, Optical interconnects, Modulators, Polymer multimode waveguides, Silicon photonics, Vertical cavity surface emitting lasers, Modulation, Packaging

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Proceedings Article | 5 March 2022 Presentation

Dynamically tunable all-dielectric nonlinear metasurfaces incorporating phase-change chalcogenides

Muliang Zhu, Sajjad Abdollahramezani, Yuankai Tang, Guoce Yang, Chentao Li, Tianren Fan, Xi Wu, Hayk Harutyunyan, Ali Adibi

Proceedings Volume PC12010, PC120100F (2022) https://doi.org/10.1117/12.2617557

KEYWORDS: Chalcogenides, Switches, Modulation, Transparency, Third-harmonic generation, Silicon, Refraction, Phase shift keying, Optical computing, Optical communications

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Proceedings Article | 5 March 2021 Paper

A wideband polarization rotator-splitter based on imec iSiPP50G silicon photonics platform

Tianren Fan, Reza Safian, Swapnajit Chakravarty, Leimeng Zhuang

Proceedings Volume 11691, 1169105 (2021) https://doi.org/10.1117/12.2577924

KEYWORDS: Waveguides, Polarization, Silicon photonics, Silica, Silicon, Semiconducting wafers, Optical alignment, Directional couplers, Cladding

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Proceedings Article | 8 March 2019 Presentation

A 3C-SiC-on-oxide (SiCOI) platform enabling high-Q resonators over an octave frequency range from visible to near-infrared (Conference Presentation)

Tianren Fan, Hesam Moradinejad, Xi Wu, Ali Eftekhar, Ali Adibi

Proceedings Volume 10927, 109270S (2019) https://doi.org/10.1117/12.2517638

KEYWORDS: Resonators, Silicon carbide, Chemical mechanical planarization, Electronics, Photonics, Wafer bonding, Surface roughness, Thin films, Harmonic generation, Second-harmonic generation

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Proceedings Article | 4 March 2019 Presentation

Mitigating inverse design complexity of nano-antennas using a novel dimensionality reduction approach (Conference Presentation)

Yashar Kiarashinejad, Sajjad Abdollahramezani, Tianren Fan, Ali Adibi

Proceedings Volume 10927, 109270C (2019) https://doi.org/10.1117/12.2517651

KEYWORDS: Nanoantennas, Wave propagation, Radio propagation, Electromagnetic radiation, Nanostructures, Printing, Absorption, Plasmonics, Titanium dioxide, Resolution enhancement technologies

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We leverage a dimensionality reduction approach to develop a novel inverse design platform applicable to a wide class of optical nanoantennas. The proposed dimensionality reduction technique uses a high level of correlation (in frequency and space domains) in the propagation of electromagnetic waves to considerably reduce the dimensionality of the response space of the problem. In addition, the correlation that often exists among the effects of design parameters on the response of the structure (i.e., selecting more design parameters than needed for uniquely identifying a structure for a given input-output relation) is used to reduce the dimensionality of the design space. In addition to the considerable mitigation of computation time and complexity, the two key features of dimensionality reduction, i.e., : 1) the ability to train a NN and later use it for a large class of problems, and 2) the possibility of analytically relating the reduced design space to the original design space to obtain valuable intuitive information about the roles of each design parameter in the overall performance of the nanostructure, highlight the superiority of the proposed approach. This is in contrast to existing analysis and optimization techniques, which require an intensive repetition of the simulations for each design problem without providing an intuitive understanding of the roles of design parameters. As a proof of concept, we apply this approach to a nanoscale structural color recently emerged as a promising candidate to organic colors in the printing technology. To circumvent the high absorption loss and efficiency of plasmonic color generators, we harness the fundamental dipolar Mie resonances of an array of asymmetric titanium dioxide elliptical nanopillars. We will further experimentally demonstrate such an optimized polarization-sensitive all-dielectric significantly enhance the resolution, saturation, and hue of color palettes. Such a novel inverse design approach highlights the performance of machine learning based approaches in developing highly-efficient metastructures.

Proceedings Article | 14 March 2018 Presentation

Hybrid graphene modulator on CMOS-compatible platform for integrated photonic applications (Conference Presentation)

Tianren Fan, Amir Hosseinnia, Hesam Moradinejad, Ali Eftekhar, Ali Adibi

Proceedings Volume 10541, 1054111 (2018) https://doi.org/10.1117/12.2300949

KEYWORDS: Graphene, Modulators, Integrated photonics, Modulation, Silicon, Plasma, Dispersion, Resistance, Integrated optics, Oxides

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Proceedings Article | 28 April 2017 Presentation

Light-matter interaction in 2D material heterostructures (Conference Presentation)

Tianren Fan, Hossein Taghinejad, Ali Eftekhar, Ali Adibi

Proceedings Volume 10112, 1011216 (2017) https://doi.org/10.1117/12.2261252

KEYWORDS: Heterojunctions, Light-matter interactions, Luminescence, Alternate lighting of surfaces, Transition metals, Quenching (fluorescence), Diodes, Metals, Fluctuations and noise, Nanostructures

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Showing 5 of 8 publications

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