Presentation | 2010-06-24 Single-channel 400 Gbit/s, OTDM-32 RZ/QAM coherent transmission over 225 km Keisuke KASAI, Tatsunori OMIYA, Pengyu GUAN, Masato YOSHIDA, Toshihiko HIROOKA, Masataka NAKAZAWA, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Coherent optical time division multiplexing (OTDM) transmission with a multi-level modulation format based on digital signal processing (DSP) has attracted a lot of attention with a view to expanding the capacity per channel of wavelength division multiplexing (WDM) transmission systems. This transmission system can overcome the speed and bandwidth limitations of electrical components such as A/D and D/A converters and realize ultrahigh-speed coherent transmission by using a multi-level amplitude and phase-modulated coherent RZ pulse and the OTDM. However, in a conventional coherent OTDM system, the optical phase between an RZ data pulse and a local oscillator are not phase-locked. Therefore, it is difficult to realize a coherent OTDM transmission with high multiplicity. In this work, we demonstrated a multi-level coherent OTDM transmission with a high-precision optical phase-locked loop (OPLL) technique by using optical comb generation circuits. 400 Gbit/s data (polarization-multiplexed, 10 Gsymbol/s, 4-OTDM 32 RZ/QAM) were successfully transmitted over 225 km with a bit error rate performance below the forward error correction (FEC) limit. We also realized a 320 Gbit/s-450 km transmission with an OTDM 16 RZ/QAM scheme. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Coherent transmission / Optical time division multiplexing / Optical phase-locked loop / QAM |
Paper # | OCS2010-11 |
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Committee | OCS |
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Conference Date | 2010/6/17(1days) |
Place (in Japanese) | (See Japanese page) |
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Registration To | Optical Communication Systems (OCS) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Single-channel 400 Gbit/s, OTDM-32 RZ/QAM coherent transmission over 225 km |
Sub Title (in English) | |
Keyword(1) | Coherent transmission |
Keyword(2) | Optical time division multiplexing |
Keyword(3) | Optical phase-locked loop |
Keyword(4) | QAM |
1st Author's Name | Keisuke KASAI |
1st Author's Affiliation | Research Institute of Electrical Communication, Tohoku University() |
2nd Author's Name | Tatsunori OMIYA |
2nd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
3rd Author's Name | Pengyu GUAN |
3rd Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
4th Author's Name | Masato YOSHIDA |
4th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
5th Author's Name | Toshihiko HIROOKA |
5th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
6th Author's Name | Masataka NAKAZAWA |
6th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
Date | 2010-06-24 |
Paper # | OCS2010-11 |
Volume (vol) | vol.110 |
Number (no) | 94 |
Page | pp.pp.- |
#Pages | 6 |
Date of Issue |