2017 Fiscal Year Final Research Report
Heterodyne type Optical Interferometer
| Project/Area Number |
16K13790
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
Kiuchi Hitoshi 国立天文台, チリ観測所, 准教授 (90358911)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 光干渉計 / 光ヘテロダイン / フォトニックマイクロ波 / 光ファイバ結合 / 相関処理 |
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| Outline of Final Research Achievements |
In an infrared optical interferometer, when the fiber-based heterodyne frequency conversion technology can be established, phase information of the received optical signal can be obtained, similar to a radio interferometer. This produces a synthesized large telescope, and a high angle resolution can be expected. Furthermore, when it is possible to fabricate all parts of the optical interferometer with optical fiber parts, the requirement of aligning on the optical axis no longer exists, and it can be placed in a receiver section away from the correlation processing section. In an optical signal, if the heterodyne frequency conversion is available,the coherence length of the received optical signal can be extended by the frequency conversion ratio.
We will establish the effectiveness of optical heterodyne technology to realize a high-resolution optical interferometer based on the optical phase data.
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| Free Research Field |
フォトニックマイクロ波
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