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Accession number;99A0938069
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| Title;A Study on Polarization Control Device Using Liquid Crystal and The Control Method. |
| Author;
CHIBA TAKAFUMI
(Tohoku Univ.)
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Journal Title;Record of Electrical and Communication Engineering Conversazione, Tohoku University
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Journal Code:F0511A
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ISSN:0385-7719
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VOL.68;NO.1;PAGE.16-19(1999)
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| Figure&Table&Reference;FIG.6, REF.10 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;In this study, a novel polarization stabilizer which employs liquid crystal rotatable waveplates is proposed and demonstrated for the first time. The stabilizer has a simple configuration, no moving parts and endless-control capability. High polarization stability was confirmed under various SOP(State of Polarization) fluctuations. Response speed limit of the polarization stabilizer is about 2.5Hz (900.DEG./s) at present, but improvement of the controller should make it faster. We applied the polarization stabilizer to a semiconductor optical amplifier having polarization dependence. It was effective in the gain stabilizing, and the total optical gain was 4.8dB. (author abst.) |
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