2016 Fiscal Year Final Research Report
Small-sized light modulator with optical frequency-chirp of which amount can be preset and its applications
| Project/Area Number |
26420313
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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 |
Electron device/Electronic equipment
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 電子デバイス・機器 / 電気光学変調器 / 波長チャープ / 光周波数コム / 歪み補償 |
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| Outline of Final Research Achievements |
An electro-optic light intensity modulator inducing optical frequency-chirp of which amount can be preset was proposed and realized. Its applications were also considered. The rat-race (RR) circuit, which operates as a 180-degree hybrid, with an asymmetric power split ratio was integrated with the electro-optic modulator on the same substrate. Thereby, the frequency-chirp modulation was realized by the modulator structure of a small-sized and single-chip configuration. As applications of this modulator, generation of the optical frequency comb consisting of seven spectrum components and the pre-chirp modulation for avoiding the optical fiber dispersion in optical fiber transmissions were successfully realized by the experiments. Moreover, a new optical compensation method of the nonlinear distortion in electro-optic modulators using the frequency-chirp modulation was proposed. The distortion suppression performance was confirmed by the calculation.
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| Free Research Field |
マイクロ波フォトニクス、光エレクトロニクス
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