Development of precise carrier dissemination system by long optical fiber stabilization

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K18082
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Measurement engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: WADA MASATO 国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究員 (20635817)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 計測システム / 光伝送技術 / 超精密計測 / 時間周波数 / 光ファイバ / 干渉計

Outline of Final Research Achievements

We developed a precise frequency dissemination system using a long optical fiber. The phase noise induced in the optical fiber type interferometer limitted the frequency dissemination accuracy. This interferometric noise was extremely reduced by an ultra-stable environment. It was found that sealing, vacuum, temperature stabilization, acoustic shielding, and vibration isolation are effective to reduce the interferometeric noise. The achieved accuracy is the best that has been reported so far. This system enables us to share precise frequencies with little deterioration with many distant users.

Free Research Field

光工学