DC Drift Phenomena in LiNb0, Optical Waveguide Devices
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概要
- 論文の詳細を見る
DC drift phenomena in LiNb0_3 optical waveguide devices are investigated. From low speed switching experiments of a directional coupler modulator, two kinds of dc drift are found to exist in this device. One is a short time dc drift with several seconds relaxation time and the other is a long time one whose relaxation time is several hours. It is shown analytically that the former originates from current leakage through a buffer layer, and it is successfully suppressed by a separation of the layer. For the latter problem, photocurrents measuring experiments were carried out for various LiNb0. samples. We may consider from the results that the main origin of the long time dc drift is a photorefractive effect due to the guided light itself. Some solutions for overcoming these effects are also given.
- 社団法人応用物理学会の論文
- 1981-04-05
著者
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YAMADA Satoru
Research Center for Heavy Ion Medicine, Gunma University
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Yamada Syoji
Musashino Electrical Communication Laboratory Nippon Telegraph And Telephone Public Corporation
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Minakata Makoto
Musashino Electrical Communication Laboratory Nippon Telegraph And Telephone Public Corporation
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