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Takahata Lab
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The lab combines LSI and optical devices to make communications faster and more power-efficient.
AboutAbout the lab
Electrical circuits and light, as one.
The Takahata Lab studies optoelectronic integration technology that combines LSI (large-scale integrated circuits) and optical devices.
As smartphones and video services have spread, the amount of information flowing through the internet has been growing rapidly in recent years.
Meeting this demand makes higher speed, larger capacity, and lower power consumption in communication networks key challenges.
The lab builds compact optical transceivers for high-speed optical communication systems, and optical-microwave integrated devices aimed at use in mobile networks.
Key terms
- Optoelectronic integrated circuit
- An integrated circuit that puts components that handle light and electrical circuits together on a single chip
- Silicon photonics
- Technology that uses silicon, a semiconductor, to build light pathways and components on a chip
- Photonic crystal
- A structure with fine holes or similar features arranged regularly, which can pass or block only light of specific wavelengths (colors)
NewsLab news
View More ↗ResearchResearch themes
To address the challenges of higher speed, larger capacity, and lower power consumption in communication networks, the lab's research builds on optoelectronic integration technology, which combines the LSIs used in communication equipment with optical devices. Its current focus is highly functional photonic devices based on silicon photonics and their integrated circuits.
*Illustrative imageOptical logic units
Using Mach-Zehnder interferometers, microring resonators, and multimode interferometers, the lab is working to create low-power, high-speed computing mechanisms that go beyond the limits of logic operations in electrical circuits.
*Illustrative imageSlow-light waveguides
Waveguides in photonic crystals can slow the speed of light dramatically. The lab studies new structures that produce this effect more strongly over a wide range of wavelengths.
MembersFaculty
- ProfessorKiyoto Takahata
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Silicon Photonics 300mm wafer” Ehsanshahoseini / CC BY-SA 4.0 (cropped)
- Optical logic units: “Supercontinuum in a microstructured optical fiber” Blinking Spirit, and Dimitris Papadopoulos / CC BY-SA 3.0 (cropped)
- Slow-light waveguides: “Hollow-core photonic bandgap fiber” Defense Advanced Research Projects Agency (DARPA) / Public domain (cropped)
- Related lab (硴塚研究室): “Laser diode chip” NASA
（PD NASA。 作者欄なし） / Public domain (cropped) - Related lab (山﨑研究室): “Steel truss bridge in Brazil” Henri Bergius from Finland / CC BY-SA 2.0 (cropped)
- Related lab (丹沢研究室): “TI AHC08 Die Shot (4x2-Input AND Gate)” Cole L / CC BY-SA 2.0 (cropped)
- Related lab (池橋研究室): “Microstructure1234” Denis Elbl, KIT / CC BY-SA 4.0 (cropped)
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