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Summary
Summary
| Description |
English: The fringe shift in a Sagnac interferometer due to rotation has a magnitude proportional to the enclosed area of the light path, and this area must be specified in relation to the axis of rotation. Thus the sign of the area of a loop is reversed when the loop is wound in the opposite direction (clockwise or anti-clockwise). A light path that includes loops in both directions, therefore, has a net area given by the difference between the areas of the clockwise and anti-clockwise loops. The special case of two equal but opposite loops is called a Zero-area Sagnac interferometer. The result is an interferometer that exhibits the exceptional stability of the Sagnac topology while being insensitive to rotation. | |||
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| Source |
Own work | |||
| Date |
2013-02-10 20:09:57 | |||
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| current | 08:41, 27 January 2025 | | 2,560 × 2,024 (97 KB) | Isidore (talk | contribs) | =={{int:filedesc}}== {{Information |description={{en|1=The fringe shift in a Sagnac interferometer due to rotation has a magnitude proportional to the enclosed area of the light path, and this area must be specified in relation to the axis of rotation. Thus the sign of the area of a loop is reversed when the loop is wound in the opposite direction (clockwise or anti-clockwise). A light path that includes loops in both directions, therefore, has a net area given by the difference between the a... |
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