Activities

Publications since April 2016
(Ryu Lab has started research on April 2016.)
Previous publicaions of Shiro Ryu can be found here.

Academic Journal
Optical wireless communication technology
1. S. Ryu, "Application of angle diversity technique to optical wireless communication systems for smartphones," Acta Materialia Turcica, Vol. 4, No. 1, pp. 1-8, June 2020.

International Conference
Optical wireless communication technology

1. J. Kishi and S. Ryu, "Study on angle diversity receiving system for visible light communications," ACP2018, paper S4D.6, Hangzhou, China, October 2018.
2. H. Ando and S. Ryu, "Simultaneous dual data stream transmission using RGB and phosphor-based white LEDs," ACP2018, paper M3D.6, Hangzhou, China, October 2018.
3. S. Ryu, "(Invited talk) Application of angle diversity technique to optical wireless communication systems for smartphones," Interphotonics 2018, Antalya, Turkey, October 2018.
4. S. Ryu, "Study on diversity receiving techniques in optical wireless communication systems," 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR), P4-008, 2017.

Optical measurement technology using coherent heterodyne detection and digital signal processing
1. N. Takei and S. Ryu, "Novel measurement method of fiber-birefringence spatial distribution by coherent heterodyne detection of Rayleigh backscattered light," CLEO 2020, paper SF3P.3, May 2020.
2. S. Ryu, "(Invited talk) Novel optical time/frequency domain reflectometry capable of continuous time-domain measurement of Rayleigh backscattered light," Interphotonics 2019, Antalya, Turkey, November 2019.
3. S. Ryu, T. Tsuboya, H. Murata, and D. Fukushima, "Novel optical time domain reflectometry with continuous time-domain measurement of backscattered light, OECC/PSC 2019, paper WP4-C4, Fukuoka, Japan, July 2019.
4. S. Nozawa and S. Ryu, "Investigation of optical phase characteristics of Stokes and transmitted light in fiber Brillouin scattering," OFC2019, paper M4C.1, San Diego, CA, March 2019.


IEICE Technical Committee Meeting

Optical wireless communication technology
1. S. Ryu, "Study on two-dimensional signal-to-noise ratio distribution in optical wireless communications (in Japanese)," Technical Committee on Optical Communicatin Systems, IEICE, OCS2017-63, Osaka, November 2017.

Optical measurement technology using coherent heterodyne detection and digital signal processing
1. S. Nozawa and S. Ryu, "Study of optical phase characteristics of Stokes and transmitted light in fiber Brillouin scattering," Technical Committee on Optical Fiber Technologies (in Japanese), IEICE, OFT2019-28, Kushiro, August 2019.

SDN technology
1. J. Tomaki and S. Ryu, "Dynamic rerouting experiments by cooperation of SDN and optical wireless communication," Technical Committee on Optical Communicatin Systems (in Japanese)," OCS2019-25, Kushiro, August 2019.


IEICE Nanional Convention
Optical wireless communication technology

1. J. Kishi and S. Ryu, "A study on angle diversity optical receiver for visible light communications (in Japanese)," IEICE Convention Record, B-10-21, March 2020.
2. K. Nagase and S. Ryu, "A study on diversity receiving system for visible light communications (in Japanese)," IEICE Convention Record, B-10-20, March 2020.
3. H. Ando and S. Ryu, "A study on simultaneous dual data stream transmission using OFDM modulation (in Japanese)," IEICE Convention Record, B-10-13, Tokyo, March 2019.
4. J. Kishi and S. Ryu, "A study on angle diversity system for visible light communications (in Japanise)," IEICE Convention Record, B-10-14, Tokyo, March 2019.
5. J. Kishi and S. Ryu, "A study on angle diversity reception method for visible light communications (in Japanise)," IEICE Convention Record, B-10-23, Kanazawa, September 2018.
6. J. Tomaki, S. Shinoda, and S. Ryu, "Optical receiver for optical wireless communication using LED as light receiving device (in Japanese)," IEICE Convention Record, B-10-24, Kanazawa, September 2018.
7. H. Ando and S. Ryu, "A study on simultaneous dual data stream transmission using RGB LED (in Japanese)," IEICE Convention Record, B-10-25, Kanazawa, September 2018.
8. S. Shinoda, H. Ando, and S. Ryu, "Ethernet data transmission experiment using optical wireless communication (in Japanese)," IEICE Convention Record, B-10-26, Kanazawa, September 2018.
9. S. Ryu, "Study on two-dimensional signal-to-noise ratio distribution in optical wireless communications (in Japanese)," IEICE Convention Record, B-10-49, Tokyo, September 2017
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10. H. Ando and S. Ryu, "Optimization of transmitter design in optical wireless communications (in Japanese)," IEICE Convention Record, B-10-48, Tokyo, September 2017.
11. S. Ryu, "Study on diversity receiving systems in optical wireless communications (in Japanese)," IEICE Convention Record, B-10-60, Nagoya, March 2017.

Optical measurement technology using coherent heterodyne detection and digital signal processing
1. N. Takei and S. Ryu, "Method of birefringence measurement by phase measurement of backscattered light using coherent heterodyne detection (in Japanese)," The 67th JSAP Spring Meeting 2020, 12p-B406-2, March 2020.
2. N. Takei and S. Ryu, "Analysis of phase characteristics of backscattered light using coherent heterodyne detection (in Japanese)," IEICE Convention Record, B-13-33, Osaka, September 2019.
3. S. Nozawa and S. Ryu, "Vibration measurement of optical fiber using Brillouin frequency shift (in Japanese)," IEICE Convention Record, B-13-34, Osaka, September 2019.
4. S. Nozawa and S. Ryu, "Study of optical phase characteristics of Stokes light in Brillouin scattering (in Japanese)," IEICE Convention Record, B-13-17, Tokyo, March 2019.
5. T. Tsuboya, H. Murata, D. Fukushima, and S. Ryu, "Phase fluctuation measurement in continuous measurement method of optical fiber backscattered light (in Japanese)," IEICE Convention Record, B-13-13, Tokyo, March 2019.
6. H. Murata, T. Tsuboya, D. Fukushima, and S. Ryu, "Frequency sweep light generation in continuous measurement method of optical fiber backscattered light (in Japanese)," IEICE Convention Record, B-13-14, Tokyo, March 2019.
7. S. Nozawa and S. Ryu, "Phase noise measurement of optical signal using coherent heterodyne detection technique (in Japanese)," IEICE Convention Record, B-10-53, Kanazawa, September 2018.

SDN technology
1. J. Tomaki and S. Ryu, "Dynamic routing by cooperation of SDN and optical wireless communication (in Japanese)," EICE Convention Record, B-12-4, September 2019.
2. J. Tomaki, S. Shinoda, and S. Ryu, "Dynamic routing by cooperation of SDN and quality measurement of optical wireless signal (in Japanese)," IEICE Convention Record, B-12-11, Tokyo, March 2019.
3. A. Horiguchi and S. Ryu, "Dynamic routing using SDN technology and packet statistics (in Japanise)," IEICE Convention Record, B-6-30, Kanazawa, September 2018.





























Ryu Laboratory
School of Interdisciplinary Mathematical Sciences
Meiji University

Room 1207, 1208
4-21-1, Nakano, Nakano-ku
Tokyo 164-8525, Japan