摘要
A novel method is presented for of measuring absolute displacement with a synthesized wavelength interferometer. The optical phase of the interferometer is simultaneously modulated with a frequencymodulated laser diode and optical path-length difference. The error signal originating from the intensity modulation of the source is eliminated by a signal processing circuit. In addition, a lock-in technique is used to demodulate the envelope of the interferometric signal. The displacement signal is derived by the self-mixing technique.
原文 | English |
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頁(從 - 到) | 2843-2847 |
頁數 | 5 |
期刊 | Applied optics |
卷 | 38 |
發行號 | 13 |
DOIs | |
出版狀態 | Published - 1999 5月 1 |
All Science Journal Classification (ASJC) codes
- 原子與分子物理與光學
- 工程(雜項)
- 電氣與電子工程