| Presentation | 2006-08-25 Linewidth broadening in high-speed optical comb transmission using a picosecond mode-locked laser Kou OSAWA, Toshihiko HIROOKA, Masato YOSHIDA, Masataka NAKAZAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An optical pulse train generated from a mode-locked laser has neatly repetitive longitudinal modes in the frequency domain. Since the interval between adjacent modes is defined by the repetition frequency of the laser and each mode has a narrow linewidth with a high SN ratio, the modes can be used for highly accurate optical frequency measurement. Recently, the delivery of such optical frequency standards through optical fiber networks has become an important subject. When we transmit longitudinal modes through an optical fiber network, it is very important to investigate the deformation in the power spectrum of the modes that occurs during the transmission. In this paper, we report the spectrum deformation of the longitudinal mode that occurs during long-haul transmission through dispersion-shifted fiber. We used a 10GHz mode-locked fiber laser with a linewidth as narrow as 1kHz as the signal source. As a result, we found that the deformation of the longitudinal mode power spectrum occurs mainly at the tail of the spectrum and the linewidth broadening increases in proportion to the transmission distance. The main reason for the linewidth broadening in the present experiment was the phase fluctuation of the optical fiber caused by temperature fluctuation or vibration. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mode-locked laser / optical comb / longitudinal-mode linewidth / ultrahigh-speed optical transmission |
| Paper # | OFT2006-27 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 2006/8/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Optical Fiber Technology (OFT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Linewidth broadening in high-speed optical comb transmission using a picosecond mode-locked laser |
| Sub Title (in English) | |
| Keyword(1) | Mode-locked laser |
| Keyword(2) | optical comb |
| Keyword(3) | longitudinal-mode linewidth |
| Keyword(4) | ultrahigh-speed optical transmission |
| 1st Author's Name | Kou OSAWA |
| 1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University() |
| 2nd Author's Name | Toshihiko HIROOKA |
| 2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 3rd Author's Name | Masato YOSHIDA |
| 3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| 4th Author's Name | Masataka NAKAZAWA |
| 4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 2006-08-25 |
| Paper # | OFT2006-27 |
| Volume (vol) | vol.106 |
| Number (no) | 211 |
| Page | pp.pp.- |
| #Pages | 6 |
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