Paper Abstract and Keywords |
Presentation |
2016-10-27 11:25
Narrow line-widths of third-order comb-components in optical-frequency-comb spectrum generated by our Giga-Herz all-optical-gate-based mode-locked pulsed laser Kengo Okano, Kodai Ishida, Makoto Takeshita, Yuuki Setagawa, Shota Kawakami, Yusuke Minamide, Yoshiyasu Ueno (UEC) OCS2016-37 OPE2016-78 LQE2016-53 Link to ES Tech. Rep. Archives: OPE2016-78 LQE2016-53 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
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. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Spectral line-width / Optical frequency comb / Delayed self-heterodyne method / Mode-locked laser / Semiconductor optical amplifier / Ultrafast optical communication / Environmental molecular sensor / |
Reference Info. |
IEICE Tech. Rep., vol. 116, no. 274, OPE2016-78, pp. 13-18, Oct. 2016. |
Paper # |
OPE2016-78 |
Date of Issue |
2016-10-20 (OCS, OPE, LQE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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OCS2016-37 OPE2016-78 LQE2016-53 Link to ES Tech. Rep. Archives: OPE2016-78 LQE2016-53 |
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