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Research Output 1990 2019

4 Citations (Scopus)

0.018pm/°C athermal silicon nitride ring resonator by polymer cladding

Yokoyama, S., Qiu, F., Feng, Y., Spring, A. M. & Yamamoto, K., Oct 18 2013, 2013 Conference on Lasers and Electro-Optics Pacific Rim, CLEO-PR 2013. 6600375. (Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Silicon nitride
silicon nitrides
Resonators
Polymers
resonators

110 Gbit/s On-Off Keying Transmitter Based on a Single-Drive Polymer Modulator

Yokoyama, S., Lu, G. W., Cheng, X., Qiu, F. & Spring, A. M., Apr 22 2019, 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8696847. (2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

keying
low voltage
transmitters
Modulators
modulators
1 Citation (Scopus)

96 Gbit/s PAM-4 generation using an electro-optic polymer modulator with high thermal stability

Yokoyama, S., Lu, G. W., Miura, H., Feng, Q. & Spring, A. M., Jan 1 2018, CLEO: Science and Innovations, CLEO_SI 2018. OSA - The Optical Society, Vol. Part F94-CLEO_SI 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Pulse amplitude modulation
Electrooptical effects
Modulators
Polymers
Thermodynamic stability
2 Citations (Scopus)

96 Gbit/s PAM-4 Generation using an Electro-Optic Polymer Modulator with High Thermal Stability

Yokoyama, S., Lu, G. W., Miura, H., Feng, Q. & Spring, A. M., Aug 6 2018, 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8427665. (2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

pulse amplitude modulation
Pulse amplitude modulation
Electrooptical effects
Modulators
electro-optics
2 Citations (Scopus)
Azobenzene
Dimers
optical activity
dimers
monomers
17 Citations (Scopus)

Absolute orientation of pendant chromophores attached to the polymer backbone in monolayers at interfaces studied by phase measurement of second-harmonic generation

Kajikawa, K., Yamada, T., Yokoyama, S., Okada, S., Matsuda, H., Nakanishi, H., Kakimoto, M. A., Imai, Y., Takezoe, H. & Fukuda, A., Jan 24 1996, In : Langmuir. 12, 2, p. 580-583 4 p.

Research output: Contribution to journalArticle

Phase measurement
Chromophores
Harmonic generation
chromophores
Monolayers

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
16 Citations (Scopus)

Adsorption-induced conformational changes of porphyrin derivatives and formation of twin superstructures on a copper surface

Sekiguchi, T., Wakayama, Y., Yokoyama, S., Kamikado, T. & Mashiko, S., Oct 1 2004, In : Thin Solid Films. 464-465, p. 393-397 5 p.

Research output: Contribution to journalArticle

Porphyrins
Scanning tunneling microscopy
porphyrins
scanning tunneling microscopy
Copper
1 Citation (Scopus)

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

Hong, J., Spring, A. M., Qiu, F. & Yokoyama, S., Dec 1 2019, In : Scientific reports. 9, 1, 12988.

Research output: Contribution to journalArticle

Open Access
Optics and Photonics
Silicon Dioxide
silicon nitride
5 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
22 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
13 Citations (Scopus)

Amplified spontaneous emission and laser emission from a high optical-gain medium of dye-doped dendrimer

Yokoyama, S., Nakahama, T. & Mashiko, S., Jan 1 2005, In : Journal of Luminescence. 111, 4 SPEC. ISS., p. 285-290 6 p.

Research output: Contribution to journalArticle

Dendrimers
Optical gain
Spontaneous emission
dendrimers
spontaneous emission

Analysis of a molecular beam produced by the spray-jet technique with femtosecond laser mass spectroscopy

Yamada, T., Shinohara, H., Mashiko, S. & Yokoyama, S., Aug 20 2007, In : Molecular Crystals and Liquid Crystals. 472, 1, p. 171-179 9 p.

Research output: Contribution to journalArticle

Molecular beams
Ultrashort pulses
laser spectroscopy
molecular beams
sprayers
6 Citations (Scopus)
Polymers
Molecular weight
Inductively coupled plasma mass spectrometry
Catalysts
Ruthenium
7 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
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
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

A novel TiO2/electro-optic polymer waveguide modulator

Qiu, F., Yokoyama, S., Aoki, I. & Otomo, A., Dec 1 2013, JSAP-OSA Joint Symposia, JSAP 2013. (Optics InfoBase Conference Papers).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)
Hamiltonians
examination
Vibrational spectra
Angular momentum
harmonics
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
13 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
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
19 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
43 Citations (Scopus)

Azimuthal Photoregulation of a Liquid Crystal with an Azobenzene-Modified Polyimide Langmuir-Blodgett Monolayer

Akiyama, H., Kudo, K., Ichimura, K., Yokoyama, S., Kakimoto, M. A. & Imai, Y., Mar 1 1995, In : Langmuir. 11, 3, p. 1033-1037 5 p.

Research output: Contribution to journalArticle

Liquid Crystals
Azobenzene
polyimides
Polyimides
Liquid crystals

Bragg grating coupled high Q factor ring resonator using LSCVD deposited Si3N4 film

Cheng, X. & Yokoyama, S., Nov 19 2017, 22nd Microoptics Conference, MOC 2017. Institute of Electrical and Electronics Engineers Inc., p. 96-97 2 p. (22nd Microoptics Conference, MOC 2017; vol. 2017-November).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Optical losses
Bragg gratings
viability
Photonics
Q factors

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
32 Citations (Scopus)
silicon nitrides
titanium oxides
CMOS
resonators
rings
4 Citations (Scopus)

Computational and experimental studies of azobenzene dendrons for non-linear optical applications

Yokoyama, S., Mashiko, S., Yamaguchi, Y. & Yokomichi, Y., Aug 1 2000, In : Polymers for Advanced Technologies. 11, 8-12, p. 692-697 6 p.

Research output: Contribution to journalArticle

Dendrimers
Azobenzene
Chromophores
Molecular dynamics
Harmonic generation
81 Citations (Scopus)

Conformation selective assembly of carboxyphenyl substituted porphyrins on Au (111)

Yokoyama, T., Kamikado, T., Yokoyama, S. & Mashiko, S., Dec 15 2004, In : Journal of Chemical Physics. 121, 23, p. 11993-11997 5 p., 5.

Research output: Contribution to journalArticle

Porphyrins
porphyrins
Conformations
Hydrogen
assembly

Control of molecular selective-assembling on metal surface

Yokoyama, T., Kamikado, T., Yokoyama, S., Okuno, Y. & Mashiko, S., Jan 1 2003, Nanotechnology and Nano-Interface Controlled Electronic Devices. Elsevier B.V., p. 49-61 13 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

assembling
metal surfaces
scanning tunneling microscopy
interactions
gold
6 Citations (Scopus)

Control of multiphoton process within diffraction limit space in polymer microstructures

Nakahama, T., Yokoyama, S., Miki, H. & Mashiko, S., Mar 21 2006, In : Thin Solid Films. 499, 1-2, p. 406-409 4 p.

Research output: Contribution to journalConference article

Multiphoton processes
Optical recording
Polymers
Photons
Diffraction
20 Citations (Scopus)

Control of photonic bandgaps in chiral liquid crystals for distributed feedback effect

Furumi, S., Yokoyama, S., Otomo, A. & Mashiko, S., Mar 21 2006, In : Thin Solid Films. 499, 1-2, p. 322-328 7 p.

Research output: Contribution to journalConference article

Liquid Crystals
Liquid crystals
Photonics
Energy gap
liquid crystals
14 Citations (Scopus)

Control of single supramolecular chain of porphyrin on a copper surface

Kamikado, T., Sekiguchi, T., Yokoyama, S., Wakayama, Y. & Mashiko, S., Mar 21 2006, In : Thin Solid Films. 499, 1-2, p. 329-332 4 p.

Research output: Contribution to journalConference article

Porphyrins
porphyrins
Copper
copper
Coordination Complexes
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
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 2017, In : European Polymer Journal. 97, p. 263-271 9 p.

Research output: Contribution to journalArticle

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

Current-voltage characteristics with a step structure of metal/polyirnide/rhodamine-dendrirner/polyimide/ metal junction

Noguchü, Y., Majima, Y., Iwamoto, M., Kubota, T., Yokoyama, S., Nakahama, T. & Mashiko, S., Jan 1 2000, In : IEICE Transactions on Electronics. E83-C, 7, p. 1076-1080 5 p.

Research output: Contribution to journalArticle

Rhodamines
Current voltage characteristics
Polyimides
Metals
Coulomb blockade

DAC-less PAM4 transmitter using electro-optic polymer dual-drive Mach-Zehnder modulator with imbalanced binary driving electronics

Lu, G. W., Hong, J., Zhang, H., Qiu, F. & Yokoyama, S., Jan 1 2019, CLEO: Science and Innovations, CLEO_SI 2019. OSA - The Optical Society, (Optics InfoBase Conference Papers; vol. Part F129-CLEO_SI 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electrooptical effects
Modulators
Mach number
Transmitters
Polymers

DAC-less PAM4 Transmitter Using Electro-Optic Polymer Dual-Drive Mach-Zehnder Modulator with Imbalanced Binary Driving Electronics

Lu, G. W., Hong, J., Zhang, H., Qiu, F. & Yokoyama, S., May 1 2019, 2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8749666. (2019 Conference on Lasers and Electro-Optics, CLEO 2019 - Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electrooptical effects
transmitters
Modulators
Mach number
electro-optics
4 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

Demonstration of long-term thermal stability of a silicon-organic hybrid (SOH) modulator at 85°C

Kieninger, C., Kutuvantavida, Y., Kemal, J. N., Zwickel, H., Miura, H., Randel, S., Freude, W., Yokoyama, S. & Koos, C., Jan 1 2018, CLEO: Science and Innovations, CLEO_SI 2018. OSA - The Optical Society, (Optics InfoBase Conference Papers; vol. Part F94-CLEO_SI 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Silicon
Modulators
Thermodynamic stability
Demonstrations
Electric potential

Demonstration of Long-Term Thermal Stability of a Silicon-Organic Hybrid (SOH) Modulator at 85°C

Kieninger, C., Kutuvantavida, Y., Kemal, J. N., Zwickel, H., Miura, H., Randel, S., Freude, W., Yokoyama, S. & Koos, C., Aug 6 2018, 2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 8427666. (2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Modulators
modulators
Thermodynamic stability
thermal stability
Demonstrations

Dendrimer for Molecular Photonics Application

Yokoyama, S., Jan 1 2003, In : kobunshi. 52, 10, p. 758-762 5 p.

Research output: Contribution to journalArticle

Dendrimers
Photonics
3 Citations (Scopus)

Determining the conformation of a phenylene-linked porphyrin dimer by NMR spectroscopy and quantum chemical calculations

Okuno, Y., Kamikado, T., Yokoyama, S. & Mashiko, S., Aug 1 2003, In : Journal of Molecular Structure: THEOCHEM. 631, 1-3, p. 13-20 8 p.

Research output: Contribution to journalArticle

Porphyrins
porphyrins
Dimers
Nuclear magnetic resonance spectroscopy
Conformations
7 Citations (Scopus)

Development of an electric field sensor based on second harmonic generation with electro-optic materials

Vasa, N. J., Kawata, Y., Tanaka, R. & Yokoyama, S., Apr 30 2007, In : Journal of Materials Processing Technology. 185, 1-3, p. 173-177 5 p.

Research output: Contribution to journalArticle

Electrooptical effects
Harmonic generation
Electric field measurement
Electric fields
Sensors
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
3 Citations (Scopus)

Displacement current generation across single monolayers of polyamic acids having pendant groups at the air-water interface

Naruse, H., Iwamoto, M., Yokoyama, S., Kakimoto, M. A. & Imai, Y., Apr 15 1994, In : Thin Solid Films. 242, 1-2, p. 220-222 3 p.

Research output: Contribution to journalArticle

Monolayers
surface water
acids
Acids
Water

Donor strengthening strategy for FTC-based organic nonlinear chromophore

Piao, X., Zhang, X., Yokoyama, S., Miki, H., Aoki, I. & Otomo, A., Dec 1 2010, Quantum and Nonlinear Optics. Vol. 7846. 784609

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Electro-optics
Chromophores
Strengthening
chromophores
Electrooptical effects

Editorial

Iwamoto, M., Kaneto, K., Yokoyama, S. & Kahn, A., Mar 3 2008, In : Thin Solid Films. 516, 9, 1 p.

Research output: Contribution to journalEditorial

11 Citations (Scopus)

Effective photocrosslinking reaction of dendrimers through triplet energy transfer

Furumi, S., Otomo, A., Yokoyama, S. & Mashiko, S., Aug 22 2003, In : Thin Solid Films. 438-439, p. 85-89 5 p.

Research output: Contribution to journalConference article

Dendrimers
dendrimers
Cinnamates
Energy transfer
energy transfer
41 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