2013 Fiscal Year Final Research Report
Study on Phase Stabilization of Long Optical Fiber by Bidirectional WDM
| Project/Area Number |
23560519
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Measurement engineering
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| Research Institution | National Institute of Advanced Industrial Science and Technology |
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Principal Investigator |
AMEMIYA Masaki 独立行政法人産業技術総合研究所, 計測標準研究部門, 研究室長 (20392582)
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| Co-Investigator(Kenkyū-buntansha) |
SUZUYAMA Tomonari 産業技術総合研究所, 計測標準研究部門, 主任研究員 (30359111)
WATABE Ken-ichi 産業技術総合研究所, 計測標準研究部門, 主任研究員 (50358389)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 計測工学 / 情報通信工学 / クロック伝送 / タイミング信号 / 同期技術 / 光ファイバ |
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| Research Abstract |
Accurate timing signal is important in a wide variety of fields, such as measurement, communications, and science. In particular, ultra stable reference signal distribution by optical fiber is a key for synchronization systems. In those systems, fiber length should be stabilized against ambient temperature change or mechanical fluctuation. In our system, one pair of wavelengths in the WDM-based link is used as round trip signals to detect phase deviation. The phase error is minimized by a fiber stretcher driven by a feedback loop. This fiber length stabilization system yields a stable platform to which arbitrary signals can be added by dense-WDM.
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