A Novel Method to Calculate the Initial Phase Difference between the Two Fibre Arms of Laser Homodyne Interferometer

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2007,（1）
• 页码范围: 101-103
• 页数: 3页
• 语种: 英文

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 ℃ (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.