| 講演抄録/キーワード |
| 講演名 |
2016-10-27 11:25
全光半導体ゲート型40GHzモード同期レーザの出力光コムの±3次成分線幅広がり評価 ○岡野謙悟・石田耕大・竹下 諒・瀬田川悠輝・川上勝大・南出雄佑・上野芳康(電通大) OCS2016-37 OPE2016-78 LQE2016-53 |
| 抄録 |
(和) |
モード同期レーザ (光周波数コム光源) は高速通信方式や環境分子センサの高機能化への貢献が期待される。光周波数コムの線幅は、環境分子センサの分解能などを決定付ける。当グループのモード同期レーザは、中心光周波数の可変制御性および光集積親和性、cw種光を外部注入するなどの独自性をもつ。前回、著者らは繰り返し周波数40 GHzで、中心スペクトル成分に隣接する±1次成分の線幅広がりが1 MHz以下である事実を明らかにした。高次成分線幅は未評価であった。本研究では、±3次 (±120 GHz) までの線幅広がりが1 MHz以下 (4 ppm以下) か否かを実験的に評価し報告する。 |
| (英) |
Mode-locked lasers which generate precise pulse trains and optical frequency-comb spectra are valuable light sources for use in high-speed communication systems, and in environmental gaseous molecule sensor systems. Such molecule sensor systems’ diagnostic resolutions are strongly affected, too, by the width of frequency-comb’s equally-spaced spectral components. The all-optical semiconductor-gate-based mode-locked laser scheme of this group is supposed to have scientifically significant advantages in terms of the tunability of optical center frequency, the compatibility to conventional integrated planar-wave-guided structures, etc. We’ve recently demonstrated the fact that the increases in the line-widths of both plus and minus first-order comb components (located next to its central component) from the above-mentioned home-made 40-GHz-repetition mode-locked laser are narrower than one MHz. Line-widths of higher-order comb components were, however, not yet characterized. In this work, we carefully characterize the line-widths of both plus and minus second- and third-order comb components from a similar 40-GHz laser, for the first time, to see whether or not the increases in widths of those higher-order comb components are still always narrower than one MHz, which relatively corresponds to 4 ppm with respect to this optical comb’s spacings, 40 GHz. |
| キーワード |
(和) |
スペクトル線幅 / 光周波数コム / 遅延自己ヘテロダイン法 / モード同期レーザ / 半導体光増幅器 / 高速光通信 / 環境分子センサ / |
| (英) |
Spectral line-width / Optical frequency comb / Delayed self-heterodyne method / Mode-locked laser / Semiconductor optical amplifier / Ultrafast optical communication / Environmental molecular sensor / |
| 文献情報 |
信学技報, vol. 116, no. 274, OPE2016-78, pp. 13-18, 2016年10月. |
| 資料番号 |
OPE2016-78 |
| 発行日 |
2016-10-20 (OCS, OPE, LQE) |
| ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
| PDFダウンロード |
OCS2016-37 OPE2016-78 LQE2016-53 |