About our laboratory.
田中洋介研究室について


Optoelectronic Systems
The Key to Change the World!






Y-TANAKA Laboratory specializes in optoelectronic systems including optical sensing systems, fiber optic power transmission systems, optical information processing, and high-speed optical communications systems.

田中研究室では光計測システム、光ファイバ給電システム、光情報処理、高速光通信システムをはじめとする光エレクトロニクスシステムを専門に研究しています


Some of Our Recent Study
最近の研究から

Sensor network based on fiber optical power supply[1]
光ファイバ給電によるセンサ網
---What a low-power system! Hundreds of sensors with many kinds are driven by a 1-W laser diode.
とてもとても低電力なシステム。様々な種類の何100台ものセンサを1WLD一台で動かせます。


Distance displacement measurement using two-photon absorption process in a Siphotodetector[2][3]
Si
受光素子の二光子吸収応答を利用した距離変位計測
---Simple but high-precision measurement system! Accuracy of 10-5 is achieved.
簡単なのに高精度な計測システム。10−5の精度も達成。



Measurement of high-speed vibration displacement with fiber optic interferomenter[4]
光ファイバ干渉計による高速振動変位計測
---Vibration displacement is measured accurately by using optical communication devices.
光通信用のデバイスを使って振動波形を正確に測定。



Study on high-speed and high-capacity optical communication system[5][6]
高速大容量光通信システムの研究



References
参考文献
[1]Y. Tanaka, S. Kobayashi, A. Shiomichi and T. Kurokawa, “Low power fiber sensor network deploying both wired and wireless sensors using optical power supply with WDM technique,” 2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society, ThF1.4, Hilton Hotel, Hawaii, USA, 2 - 6 October 2016.

[2]
Y. Tanaka, S. Tominaka, and T. Kurokawa, “Precision
distance measurement using a two-photon absorption process
in a silicon avalanche photodiode with saw-tooth phase
modulation,” Appl. Opt., vol. 54, no. 28, pp. E35-E40, 2015.

[3]Y. Tanaka, Y. Kudo, T. Hirasakura, and T. Kurokawa, “
Wide range distance measurement over 50 km based on high-
sensitive detection of two-photon absorption photocurrent
from Si-APD,” Measurement Science and Technology, Vol.26,
025205 (7pp), 2015.

[4]Y. Tanaka, R. Kimura, T. Ito, T. Kurokawa, “Dynamic displacement measurement based on triangle phase modulation without preliminary measurement of half-wave voltage for phase modulator,” Measurement Science and Technology, Vol.28, 045207, 2017.

[5]A. Hasegawa, K. Kashiwagi, Y. Tanaka, T. Kurokawa, “
Temporal imaging of optical asymmetric waveform pulses with
a time lens,” IEEE Photonics Journal, vol.7, issue 4,
Article#: 6802711, 2015.

[6]K. Kashiwagi, T. Kurokawa, Y. Okuyama, T. Mori, Y. Tanaka, Y. Yamamoto, M. Hirano, “Direct generation of 12.5-GHz-spaced optical frequency comb with ultrabroad coverage in near-infrared region by cascaded fiber configuration,” Opt. Exp., 24(8), 8120-8131, 2016.