2013 Fiscal Year Final Research Report
Research on achieving higher coherence CEP controlled optical comb towards realizing optical frequency synchronous networks
| Project/Area Number |
23360173
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Oita University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ISHIZAWA Atsushi 日本電信電話株式会社 NTT 物性科学基礎研究所, 量子光物性研究部, 主任研究員 (30393797)
ATSUSHI Takada 徳島大学, 大学院・ソシオテクノサイエンス研究部・情報ソリューション部門・計算機システム工学, 教授 (00548563)
AKIRA Mizutori 大分大学, 工学部・電気電子工学科, 助教 (10190646)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKARA Hidehiko 日本電信電話株式会社, NTT 未来ねっと研究所・フォトニックトランスポートネットワーク研究部, 主任研究員
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 光周波数コム / CEP制御光 / 光周波数同期網 / 半導体レーザ / マイクロ波変調側波帯 / 位相変調 / パスル圧縮 / 群速度分散 |
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| Research Abstract |
Our goal is to realize 25GHz-spacing CEP (Carrier-envelope offset phase ) controlled optical frequency comb seeded by a laser diode (LD). The CW light emitted from LD was modulated by cascaded optical phase modulators, resulted in generating about 20nm spanning optical comb with 25GHz space. This optical comb will play an important role not only in the future optical networks as optical frequency comb reference but also precise optical signal processing technologies. These wide spacing optical comb of over 10GHz cannot be realized by conventional solid-state laser and/or fiber-laser.
We have achieved generating octave-spanning optical comb with ultra-short pulse of about 100-fsec, and are now managing to observe a self-referencing interference light. Note that unresolved noise has been observed in the light.
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