| A Novel Method to Calculate the Initial Phase Difference between the Two Fibre Arms of Laser Homodyne Iuterferometer |
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| 引用本文： | 罗红娥 田小建 高博 李良 吴戈 曹亮. A Novel Method to Calculate the Initial Phase Difference between the Two Fibre Arms of Laser Homodyne Iuterferometer[J]. 中国物理快报, 2007, 24(1): 101-103 |
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| 作者姓名： | 罗红娥 田小建 高博 李良 吴戈 曹亮 |
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| 作者单位： | College of Electronic Science and Engineering, State Key Laboratory of Integrated Optoelectronics, Jilin University, Changchun 130012 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 60372061, and Science and Technology Development Project of Jilin Province under Grand No 1271. |
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| 摘 要： | We suggest a novel method to calculate the initial phase difference between two fibre arms of a laser homodyne interferometer. Put the two fibre arms in a temperature controller, whose short term stability is 0.02° C （measured in an hour）, then measure the interference photocurrent and the photocurrents from the two fibre arms at a fixed temperature. With these three photocurrents we can calculate the value of the initial phase difference. We set up a simple laser homodyne interferometer to test the theory. The experimental results are repeatable and the measurement precision is about 0.04°. It is theoretically and experimentally proven that this method is potentially easy and practical.
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| 关 键 词： | 相位差异 计算方法 纤维 武器 |
| 修稿时间： | 2006-09-27 |
A Novel Method to Calculate the Initial Phase Difference between the Two Fibre Arms of Laser Homodyne Interferometer |
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| LUO Hong-E,TIAN Xiao-Jian,GAO Bo,LI Liang,WU Ge,CAO Liang. A Novel Method to Calculate the Initial Phase Difference between the Two Fibre Arms of Laser Homodyne Interferometer[J]. Chinese Physics Letters, 2007, 24(1): 101-103 |
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| Authors: | LUO Hong-E TIAN Xiao-Jian GAO Bo LI Liang WU Ge CAO Liang |
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| Affiliation: | College of Electronic Science and Engineering, State KeyLaboratory of Integrated Optoelectronics, Jilin University, Changchun 130012 |
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| Abstract: | We suggest a novel method to calculate the initial phase difference between two fibre arms of a laser homodyne interferometer. Put the two fibre arms in a temperature controller, whose short term stability is 0.02°C (measured in an hour), then measure the interference photocurrent and the photocurrents from the two fibre arms at a fixed temperature. With these three photocurrents we can calculate the value of the initial phase difference. We set up a simple laser homodyne interferometer to test the theory. The experimental results are repeatable and the measurement precision is about 0.04°. It is theoretically and experimentally proven that this method is potentially easy and practical. |
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| Keywords: | 42.25.Hz 42.15.Eq 42.30.Rx |
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