Image-Sensor-Based Photoreceiver for Free-Space Optical Communications
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- Kagawa Keiichiro
- Nara Institute of Science and Technology
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- Asazu Hiroaki
- Nara Institute of Science and Technology
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- Kawakami Tomoaki
- Nara Institute of Science and Technology
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- Nishimura Tomohiro
- Nara Institute of Science and Technology
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- Ikeuchi Takashi
- Nara Institute of Science and Technology
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- Fujiuchi Akiko
- Nara Institute of Science and Technology
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- Ohta Jun
- Nara Institute of Science and Technology
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- Nunoshita Masahiro
- Nara Institute of Science and Technology
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- Watanabe Kunihiro
- Microsignal Co. Ltd.
Bibliographic Information
- Other Title
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- イメージセンシング技術とその応用 イメージセンサを応用した空間光伝送用受光デバイスの設計・試作
- イメージセンサ オ オウヨウ シタ クウカン ヒカリデンソウヨウ ジュコウ デバイス ノ セッケイ シサク
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Abstract
An image-sensor-based photo receiver for free-space optical communications, especially, ones employing indoor optical wireless LANs, has been developed. The receiver enables a compact and intelligent optical communication system through its two functional modes : image-sensing and communication. We clarified that the diffusion of photo-generated electrons determines the minimum total transimpedance gain of the amplifier and the maximum intensity of optical communication signals. A 50x50-pixel photo receiver with four independent communication-output channels was designed and fabricated with standard 0. 35 μm CMOS technology. To amplify optical data in the communication mode, it has in-pixel trans-impedance amplifiers and column-parallel main amplifiers. Experiments conducted with it showed that data rates of 50Mbps and 30Mbps were possible for wavelengths of 650nm and 830nm, respectively. Transimpedance gain varied from 660kΩ to 4.9MΩ for the data rate of 10Mbps. We also successfully captured images at a frame rate of 50Hz.
Journal
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- The Journal of The Institute of Image Information and Television Engineers
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The Journal of The Institute of Image Information and Television Engineers 58 (3), 334-343, 2004
The Institute of Image Information and Television Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001205099228800
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- NII Article ID
- 110006837124
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- NII Book ID
- AN10588970
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- ISSN
- 18816908
- 13426907
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- NDL BIB ID
- 6864464
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed