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 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.
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Keyword(in English) Coherent transmission / Optical time division multiplexing / Optical phase-locked loop / QAM
Paper # OCS2010-11
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Committee OCS
Conference Date 2010/6/17(1days)
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Registration To Optical Communication Systems (OCS)
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