Title:
光OFDM受信器および光伝送システムおよびサブキャリア分離回路およびサブキャリア分離方法
Document Type and Number:
Japanese Patent JP4872003
Kind Code:
B2
Abstract:
A high-performance optical OFDM receiver is realized. A subcarrier separation circuit receives an optical OFDM signal consisting of two subcarriers A and B and separates a subcarrier component, signal light and first local oscillator light are input to the subcarrier separation circuit, the subcarrier separation circuit converts the signal light and the first local oscillator into a baseband electrical signal, the subcarrier separation circuit converts the baseband electrical signal into a digital signal, the subcarrier separation circuit shifts the frequency of the converted digital signal so that a center frequency of the subcarrier A becomes zero, and the subcarrier separation circuit adds a frequency shifted signal to a signal obtained by delaying the frequency shifted signal by 1/2 of a symbol time to separate a component of the subcarrier A.
Inventors:
Akihide Sano
Eiichi Yamada
Takayuki Kobayashi
Koichi Ishihara
Hiroshi Miyamoto
Riichi Kudo
Eiichi Yamada
Takayuki Kobayashi
Koichi Ishihara
Hiroshi Miyamoto
Riichi Kudo
Application Number:
JP2009554406A
Publication Date:
February 08, 2012
Filing Date:
February 20, 2009
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04J11/00; H04B10/2513; H04B10/40; H04B10/50; H04B10/516; H04B10/60; H04B10/61; H04J14/00; H04J14/02
Domestic Patent References:
| JP2001308818A | ||||
| JP11041197A | ||||
| JP2000092009A | ||||
| JP2000332722A | ||||
| JP2003051810A |
Other References:
山田 英一 他,ガードインターバルを用いない偏波多重コヒーレントOFDMによる50GHz ROADMノードを含む4.1Tb/s(50×88.8Gb/s)800km SMF伝送,電子情報通信学会2008年通信ソサイエティ大会講演論文集2 PROCEEDINGS OF THE 2008 IEICE COMMUNICATIONS SOCIETY CONFERENCE,2008年 9月 2日,p.216,B-10-73
Yamada, E. et al.,1 Tbit/s (111 Gbit/s/ch X 10 ch) no-guard-interval CO-OFDM transmission over 2100 km DSF,Electronics Letters ,2008年11月20日,Vol.44
Sano, A. et al.,13.4-Tb/s (134 × 111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 3,600 km of SMF with 19-ps average PMD,Optical Communication, 2008. ECOC 2008. 34th European Conference on,2008年 9月21日,pp.1-2
Sano, A. et .al,Ultra-high speed optical OFDM transmission technologies,Optical Internet, 2008. COIN 2008. 7th International Conference on,2008年10月14日,pp.1-2
Kudo, R. et al.,Single carrier transmission with two-stage overlap frequency domain equalisation for long-haul optical systems,Electronics Letters,2009年 1月29日,Vol.45
Yamada, E. et al.,1 Tbit/s (111 Gbit/s/ch X 10 ch) no-guard-interval CO-OFDM transmission over 2100 km DSF,Electronics Letters ,2008年11月20日,Vol.44
Sano, A. et al.,13.4-Tb/s (134 × 111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 3,600 km of SMF with 19-ps average PMD,Optical Communication, 2008. ECOC 2008. 34th European Conference on,2008年 9月21日,pp.1-2
Sano, A. et .al,Ultra-high speed optical OFDM transmission technologies,Optical Internet, 2008. COIN 2008. 7th International Conference on,2008年10月14日,pp.1-2
Kudo, R. et al.,Single carrier transmission with two-stage overlap frequency domain equalisation for long-haul optical systems,Electronics Letters,2009年 1月29日,Vol.45
Attorney, Agent or Firm:
Masatake Shiga
Yasuhiko Murayama
Shu Oikawa
Yasuhiko Murayama
Shu Oikawa