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Optical Communication Systems Lab
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The lab studies integrated circuits used in optical communication transmitters and receivers.
AboutAbout the lab
Flexible optical transceivers for diverse services.
The Optical Communication Systems Lab conducts research aimed at realizing integrated circuits for optical transceivers used in optical networks.
Internet traffic keeps growing, and optical communication is required to achieve ever higher speeds and larger capacities.
As services on optical networks diversify, virtualization technologies that create multiple logical networks are being studied.
On the lab's website, it is introduced under the name "Kimura Lab."
Key terms
- Optical transceiver
- A device that has both the function of sending and the function of receiving signals in optical communication. The lab works on the integrated circuits inside it
- Virtualization
- The idea of implementing network functions in software. It makes it possible to create multiple logical networks on an optical network
- Intermittent (burst) transmission
- A transmission method that sends light in intermittent bursts. It is used in optical access services
ResearchResearch themes
As services on optical networks become more diverse, there is demand for optical transceivers whose performance can be optimized to meet a variety of requirements. The lab aims to realize integrated circuits for this purpose.
*Illustrative imageOptical transceivers with adjustable performance
In addition to higher speed and larger capacity, the lab aims to make multiplexing parameters such as time, wavelength, and subcarriers adjustable, and also applies adaptive modulation techniques. The goal is an integrated circuit that can finely optimize the performance balance, including power consumption and signal processing delay.
*Illustrative imageInstant response and fairness in optical access
Targeting burst (intermittent) transmission used in optical access services, the lab studies circuit configurations that can be made flexible without degrading instantaneous response performance. It also studies circuit configurations that let users choose between maximizing total bandwidth and minimizing power consumption while maintaining fairness among users.
MembersFaculty
- ProfessorShunji Kimura
- Assistant ProfessorAmila Kariyawasam
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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: “NORTEL AA1419001 GBIC Optical Transceiver” Mister rf / CC BY-SA 4.0 (cropped)
- Optical transceivers with adjustable performance: “NORTEL AA1419001 case opened - solder side” Mister rf / CC BY-SA 4.0 (cropped)
- Instant response and fairness in optical access: “SC-APC fiber optic cable” Alexceltare2 / CC BY-SA 4.0 (cropped)
- Related lab (無線通信研究室): “Wireless antenna on boat 1914-colorized” 作者不詳 / Public domain (cropped)
- Related lab (システム制御・
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- Related lab (高性能計算研究室): “IBM Blue Gene P supercomputer” Argonne National Laboratory's Flickr page / CC BY-SA 2.0 (cropped)
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