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Research Output 1990 2019

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2019

Adamantyl and carbazole containing trans-poly(norbornene-dicarboximide)s as electro-optic chromophore hosts

Spring, A. M., Qiu, F., Hong, J., Bannaron, A., Cheng, X. & Yokoyama, S., May 20 2019, In : polymer. 172, p. 382-390 9 p.

Research output: Contribution to journalArticle

Chromophores
Electrooptical effects
Copolymers
Polymers
Monomers

A high efficiency silicon nitride waveguide grating coupler with a multilayer bottom reflector

Hong, J., Spring, A. M., Qiu, F. & Yokoyama, S., Sep 10 2019, In : Scientific reports. 9, 1, 1 p.

Research output: Contribution to journalArticle

Open Access
Optics and Photonics
Silicon Dioxide
silicon nitride

Camera sensor platform for high speed video data transmission using a wideband electro-optic polymer modulator

Cheng, X., Qiu, F., Spring, A. M., Sasaki, M., Kashino, T., Ozawa, M., Nawata, H., Kita, T., Sugihara, O. & Yokoyama, S., Feb 4 2019, In : Optics Express. 27, 3, p. 1877-1883 7 p.

Research output: Contribution to journalArticle

video data
data transmission
electro-optics
modulators
platforms
2018
3 Citations (Scopus)

Demonstration of long-term thermally stable silicon-organic hybrid modulators at 85 °C

Kieninger, C., Kutuvantavida, Y., Miura, H., Kemal, J. N., Zwickel, H., Qiu, F., Lauermann, M., Freude, W., Randel, S., Yokoyama, S. & Koos, C., Oct 15 2018, In : Optics Express. 26, 21, p. 27955-27964 10 p.

Research output: Contribution to journalArticle

burn-in
modulators
electro-optics
silicon
glass transition temperature
1 Citation (Scopus)

Plate-slot polymer waveguide modulator on silicon-on-insulator

Qiu, F., Spring, A. M., Hong, J. & Yokoyama, S., Apr 30 2018, In : Optics Express. 26, 9, p. 11213-11221 9 p.

Research output: Contribution to journalArticle

slots
electro-optics
modulators
insulators
waveguides
3 Citations (Scopus)

Silicon waveguide grating coupler based on a segmented grating structure

Hong, J., Qiu, F., Spring, A. M. & Yokoyama, S., Apr 20 2018, In : Applied Optics. 57, 12, p. 3301-3305 5 p.

Research output: Contribution to journalArticle

couplers
Waveguides
gratings
waveguides
Silicon
2017
4 Citations (Scopus)

A high-speed electro-optic triple-microring resonator modulator

Hong, J., Qiu, F., Cheng, X., Spring, A. M. & Yokoyama, S., Dec 1 2017, In : Scientific reports. 7, 1, 4682.

Research output: Contribution to journalArticle

Optics and Photonics
3 Citations (Scopus)

Crosslinked poly(norbornene-dicarboximide)s as electro-optic chromophore hosts

Spring, A. M., Qiu, F., Hong, J., Bannaron, A., Kashino, T., Kikuchi, T., Ozawa, M., Nawata, H., Odoi, K. & Yokoyama, S., Dec 1 2017, In : European Polymer Journal. 97, p. 263-271 9 p.

Research output: Contribution to journalArticle

Chromophores
Electrooptical effects
chromophores
electro-optics
Polymers
4 Citations (Scopus)

Electro-optic properties of a side chain poly(norbornene-dicarboximide) system with an appended phenyl vinylene thiophene chromophore

Spring, A. M., Qiu, F., Hong, J., Bannaron, A. & Yokoyama, S., Jun 16 2017, In : Polymer. 119, p. 13-27 15 p.

Research output: Contribution to journalArticle

Thiophenes
Thiophene
Chromophores
Electrooptical effects
Polymers
4 Citations (Scopus)

Fabrication of a high-Q factor ring resonator using LSCVD deposited Si3N4 film

Cheng, X., Hong, J., Spring, A. M. & Yokoyama, S., Jun 2 2017, In : Optical Materials Express. 7, 7, p. 2182-2187 6 p.

Research output: Contribution to journalArticle

Photonics
Resonators
Chemical vapor deposition
Fabrication
Optical losses
18 Citations (Scopus)

High thermal stability 40 GHz electro-optic polymer modulators

Miura, H., Qiu, F., Spring, A. M., Kashino, T., Kikuchi, T., Ozawa, M., Nawata, H., Odoi, K. & Yokoyama, S., Nov 13 2017, In : Optics Express. 25, 23, p. 28643-28649 7 p.

Research output: Contribution to journalArticle

electro-optics
modulators
thermal stability
polymers
frequency response
22 Citations (Scopus)

Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation

Sato, H., Miura, H., Qiu, F., Spring, A. M., Kashino, T., Kikuchi, T., Ozawa, M., Nawata, H., Odoi, K. & Yokoyama, S., Jan 23 2017, In : Optics Express. 25, 2, p. 768-775 8 p.

Research output: Contribution to journalArticle

low voltage
electro-optics
modulators
broadband
interference
2016
6 Citations (Scopus)

An electro-optic polymer-cladded TiO2 waveguide modulator

Qiu, F., Miura, H., Spring, A. M., Hong, J., Maeda, D., Ozawa, M. A., Odoi, K. & Yokoyama, S., Oct 24 2016, In : Applied Physics Letters. 109, 17, 173301.

Research output: Contribution to journalArticle

electro-optics
modulators
waveguides
polymers
titanium oxides
11 Citations (Scopus)

Athermal Hybrid Silicon/Polymer Ring Resonator Electro-optic Modulator

Qiu, F., Spring, A. M., Miura, H., Maeda, D., Ozawa, M. A., Odoi, K. & Yokoyama, S., May 18 2016, In : ACS Photonics. 3, 5, p. 780-783 4 p.

Research output: Contribution to journalArticle

silicon polymers
Silicon
Electrooptical effects
Modulators
electro-optics
6 Citations (Scopus)

Efficiently poled electro-optic polymer modulators

Qiu, F. & Yokoyama, S., Aug 22 2016, In : Optics Express. 24, 17, p. 19020-19025 6 p.

Research output: Contribution to journalArticle

electro-optics
modulators
polymers
waveguides
stability tests
5 Citations (Scopus)
Thiophenes
Thiophene
Chromophores
Electrooptical effects
thiophenes
2015
21 Citations (Scopus)

A hybrid electro-optic polymer and TiO2 double-slot waveguide modulator

Qiu, F., Spring, A. M., Maeda, D., Ozawa, M. A., Odoi, K., Otomo, A., Aoki, I. & Yokoyama, S., Feb 24 2015, In : Scientific reports. 5, 8561.

Research output: Contribution to journalArticle

slots
electro-optics
modulators
waveguides
polymers
6 Citations (Scopus)
Polymers
Molecular weight
Inductively coupled plasma mass spectrometry
Catalysts
Ruthenium
12 Citations (Scopus)

Athermal and high-Q hybrid TiO2-Si3N4 ring resonator via an etching-free fabrication technique

Qiu, F., Spring, A. M. & Yokoyama, S., Mar 18 2015, In : ACS Photonics. 2, 3, p. 405-409 5 p.

Research output: Contribution to journalArticle

Q factors
Resonators
Etching
Waveguides
resonators
7 Citations (Scopus)

Glass transition temperature control by poly(norbornene-dicarboximide) copolymers

Spring, A. M., Maeda, D., Ozawa, M., Odoi, K., Qiu, F., Yamamoto, K. & Yokoyama, S., Jan 1 2015, In : Polymer Bulletin. 72, 3, p. 503-521 19 p.

Research output: Contribution to journalArticle

temperature control
Temperature control
glass transition temperature
copolymers
Copolymers
26 Citations (Scopus)

Ultra-thin silicon/electro-optic polymer hybrid waveguide modulators

Qiu, F., Sato, H., Spring, A. M., Maeda, D., Ozawa, M. A., Odoi, K., Aoki, I., Otomo, A. & Yokoyama, S., Sep 21 2015, In : Applied Physics Letters. 107, 12, 123302.

Research output: Contribution to journalArticle

electro-optics
modulators
waveguides
polymers
silicon
2014
10 Citations (Scopus)

A norbornene polymer brush for electro-optic applications

Jia, Y., Spring, A. M., Yu, F., Yamamoto, K., Aoki, I., Otomo, A. & Yokoyama, S., Mar 3 2014, In : Thin Solid Films. 554, p. 175-179 5 p.

Research output: Contribution to journalArticle

brushes
Brushes
Chromophores
Electrooptical effects
chromophores
11 Citations (Scopus)

A straightforward electro-optic polymer covered titanium dioxide strip line modulator with a low driving voltage

Qiu, F., Spring, A. M., Maeda, D., Ozawa, M. A., Odoi, K., Aoki, I., Otomo, A. & Yokoyama, S., Aug 18 2014, In : Applied Physics Letters. 105, 7, 073305.

Research output: Contribution to journalArticle

titanium oxides
low voltage
electro-optics
modulators
strip
6 Citations (Scopus)

Electro-optic properties of a bi-chromophore norbornene polymer brush system

Jia, Y., Spring, A. M., Qiu, F., Yu, F., Yamamoto, K., Aoki, I., Otomo, A. & Yokoyama, S., Feb 10 2014, In : Japanese Journal of Applied Physics. 53, 1 PART 2, 01AF04.

Research output: Contribution to journalArticle

Azobenzene
brushes
Brushes
Chromophores
Electrooptical effects
9 Citations (Scopus)

The preparation of well-controlled poly(N-cyclohexyl-exo-norbornene-5, 6-dicarboximide) polymers

Spring, A. M., Yu, F., Qiu, F., Yamamoto, K. & Yokoyama, S., Jan 1 2014, In : Polymer Journal. 46, 9, p. 576-583 8 p.

Research output: Contribution to journalArticle

Polymers
Molecular weight
Refractive index
Weight control
Ring opening polymerization
8 Citations (Scopus)

TiO2 ring-resonator-based EO polymer modulator

Qiu, F., Spring, A. M., Maeda, D., Ozawa, M. A., Odoi, K., Aoki, I., Otomo, A. & Yokoyama, S., Jun 16 2014, In : Optics Express. 22, 12, p. 14101-14107 7 p.

Research output: Contribution to journalArticle

electro-optics
modulators
resonators
rings
polymers
2013
18 Citations (Scopus)

An enhanced host-guest electro-optical polymer system using poly(norbornene-dicarboximides) via ROMP

Yu, F., Spring, A. M., Li, L., Qiu, F., Yamamoto, K., Maeda, D., Ozawa, M., Odoi, K. & Yokoyama, S., Feb 18 2013, In : Journal of Polymer Science, Part A: Polymer Chemistry. 51, 6, p. 1278-1284 7 p.

Research output: Contribution to journalArticle

Polymers
Chromophores
Electrooptical effects
Molecular weight
Thiophenes
31 Citations (Scopus)
silicon nitrides
titanium oxides
CMOS
resonators
rings
11 Citations (Scopus)

Electro-optic polymer/titanium dioxide hybrid core ring resonator modulators

Qiu, F., Spring, A. M., Yu, F., Aoki, I., Otomo, A. & Yokoyama, S., Nov 1 2013, In : Laser and Photonics Reviews. 7, 6

Research output: Contribution to journalArticle

Electrooptical effects
titanium oxides
Titanium dioxide
Modulators
electro-optics
20 Citations (Scopus)

Thin TiO2 core and electro-optic polymer cladding waveguide modulators

Qiu, F., Spring, A. M., Yu, F., Aoki, I., Otomo, A. & Yokoyama, S., Jun 10 2013, In : Applied Physics Letters. 102, 23, 233504.

Research output: Contribution to journalArticle

electro-optics
modulators
waveguides
polymers
refractivity
2012
18 Citations (Scopus)

Athermal silicon nitride ring resonator by photobleaching of Disperse Red 1-doped poly(methyl methacrylate) polymer

Qiu, F., Yu, F., Spring, A. M. & Yokoyama, S., Oct 1 2012, In : Optics Letters. 37, 19, p. 4086-4088 3 p.

Research output: Contribution to journalArticle

polymethyl methacrylate
silicon nitrides
resonators
rings
polymers
35 Citations (Scopus)

Large electro-optic activity and enhanced temporal stability of methacrylate-based crosslinking hyperbranched nonlinear optical polymer

Mori, Y., Nakaya, K., Piao, X., Yamamoto, K., Otomo, A. & Yokoyama, S., Apr 1 2012, In : Journal of Polymer Science, Part A: Polymer Chemistry. 50, 7, p. 1254-1260 7 p.

Research output: Contribution to journalArticle

Methacrylates
Electrooptical effects
Crosslinking
Polymers
Chromophores
waveguides
filters
fibers
polymers
polarization
2011
33 Citations (Scopus)

Enhancement of electro-optic activity by introduction of a benzyloxy group to conventional donor-π-acceptor molecules

Piao, X., Zhang, X., Inoue, S., Yokoyama, S., Aoki, I., Miki, H., Otomo, A. & Tazawa, H., Jan 1 2011, In : Organic Electronics. 12, 6, p. 1093-1097 5 p.

Research output: Contribution to journalArticle

Electrooptical effects
electro-optics
Molecules
augmentation
Chromophores
2 Citations (Scopus)

Nonlinear behavior of photoluminescence from silicon particles under two-photon excitation

Xu, X. & Yokoyama, S., Dec 19 2011, In : Applied Physics Letters. 99, 25, 251105.

Research output: Contribution to journalArticle

photoluminescence
photons
silicon
fluorescence
excitation
61 Citations (Scopus)

Nonlinear optical side-chain polymers post-functionalized with high-β chromophores exhibiting large electro-optic property

Piao, X., Zhang, X., Mori, Y., Koishi, M., Nakaya, A., Inoue, S., Aoki, I., Otomo, A. & Yokoyama, S., Jan 1 2011, In : Journal of Polymer Science, Part A: Polymer Chemistry. 49, 1, p. 47-54 8 p.

Research output: Contribution to journalArticle

Chromophores
Electrooptical effects
Polymers
Isocyanates
Thiophenes
2010
40 Citations (Scopus)

Effect of modified donor units on molecular hyperpolarizability of thienyl-vinylene nonlinear optical chromophores

Zhang, X., Aoki, I., Piao, X., Inoue, S., Tazawa, H., Yokoyama, S. & Otomo, A., Nov 10 2010, In : Tetrahedron Letters. 51, 45, p. 5873-5876 4 p.

Research output: Contribution to journalArticle

Benchmarking
Chromophores
Thiophenes
Temperature
Electrooptical effects

Enhanced electro-optic response of a poled polymer in a reflective microcavity

Inoue, A., Inoue, S. I. & Yokoyama, S., Jul 15 2010, In : Optics Communications. 283, 14, p. 2935-2938 4 p.

Research output: Contribution to journalArticle

Microcavities
Electrooptical effects
electro-optics
Polymers
spacers
3 Citations (Scopus)

Modification of two-photon excited fluorescence from quantum dots on SiN photonic crystals

Xu, X., Yamada, T. & Yokoyama, S., Feb 1 2010, In : Optics Letters. 35, 3, p. 309-311 3 p.

Research output: Contribution to journalArticle

quantum dots
photonics
fluorescence
photons
crystals
2 Citations (Scopus)

Polymer microstructure embedded in two-dimensional photonic crystals and spectral properties

Sasaki, K., Inoue, S. I., Nishio, K., Masuda, H., Otomo, A. & Yokoyama, S., Jan 1 2010, In : Optical Materials. 32, 4, p. 543-546 4 p.

Research output: Contribution to journalArticle

Photonic crystals
Polymers
photonics
microstructure
Microstructure
2009
4 Citations (Scopus)

Correlations between antibunching and blinking of photoluminescence from a single CdSe quantum dot

Xu, X. S., Yamada, T. & Yokoyama, S., Dec 1 2009, In : European Physical Journal D. 55, 3, p. 691-697 7 p.

Research output: Contribution to journalArticle

blinking
nanocrystals
quantum dots
photoluminescence
excitation
1 Citation (Scopus)
Electro-optic Modulator
Surface Plasmon Polariton
Finite-difference Time-domain Method
Plasmon
Electro-optics
3 Citations (Scopus)

Nonlinear optical responses in two-dimensional photonic crystals

Inoue, S. I. & Yokoyama, S., Nov 30 2009, In : Thin Solid Films. 518, 2, p. 470-472 3 p.

Research output: Contribution to journalArticle

Photonic crystals
Lithium
lithium niobates
photonics
Harmonic generation
12 Citations (Scopus)

Numerical simulation of ultra-compact electro-optic modulator based on nanoscale plasmon metal gap waveguides

Inoue, S. I. & Yokoyama, S., Oct 19 2009, In : Electronics Letters. 45, 21, p. 1087-1089 3 p.

Research output: Contribution to journalArticle

Electrooptical effects
Modulators
Mach number
Waveguides
Finite difference time domain method
5 Citations (Scopus)

Photochemical and photophysical reactions of poly(propylene imine) dendrimers tethering cinnamamide groups

Furumi, S., Otomo, A., Yokoyama, S. & Mashiko, S., Jun 19 2009, In : polymer. 50, 13, p. 2944-2952 9 p.

Research output: Contribution to journalArticle

Dendrimers
Polypropylenes
Energy transfer
poly(propyleneimine)
cinnamamide
5 Citations (Scopus)

Synthesis and characterization of binary chromophore polymers for electro-optic application

Piao, X., Inoue, S., Yokoyama, S., Miki, H., Aoki, I., Otomo, A. & Tazawa, H., Nov 30 2009, In : Thin Solid Films. 518, 2, p. 481-484 4 p.

Research output: Contribution to journalArticle

Chromophores
Electrooptical effects
chromophores
electro-optics
Polymers
2008
8 Citations (Scopus)

Direct determination of photonic band structure for waveguiding modes in two-dimensional photonic crystals

Inoue, S. I., Yokoyama, S. & Aoyagi, Y., Feb 18 2008, In : Optics Express. 16, 4, p. 2461-2468 8 p.

Research output: Contribution to journalArticle

photonics
prisms
crystals
evanescent waves
photons
13 Citations (Scopus)
photonics
waveguides
fluorescence
augmentation
polymers
1 Citation (Scopus)

Nanosecond and femtosecond mass spectroscopic analysis of a molecular beam produced by the spray-jet technique

Yamada, T., Shinohara, H., Kamikado, T., Okuno, Y., Suzuki, H., Mashiko, S. & Yokoyama, S., Mar 3 2008, In : Thin Solid Films. 516, 9, p. 2522-2526 5 p.

Research output: Contribution to journalArticle

Spectroscopic analysis
Molecular beams
spectroscopic analysis
molecular beams
sprayers
13 Citations (Scopus)

Observation of negative differential resistance and single-electron tunneling in electromigrated break junctions

Noguchi, Y., Ueda, R., Kubota, T., Kamikado, T., Yokoyama, S. & Nagase, T., Mar 3 2008, In : Thin Solid Films. 516, 9, p. 2762-2766 5 p.

Research output: Contribution to journalArticle

Electron tunneling
electron tunneling
Diamond
Diamonds
electrons