Study on Transmission-Capacity Limit in Coherent Optical Communication Systems

• Project/Area Number: 25249038
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: The University of Tokyo
• Principal Investigator: Kikuchi Kazuro 東京大学, 工学(系)研究科(研究院), 教授 (50134458)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000); Fiscal Year 2015: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000); Fiscal Year 2014: ¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000); Fiscal Year 2013: ¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
• Keywords: 光ファイバ通信 / 先端的通信 / フォトニックネットワーク / 情報通信工学

Outline of Final Research Achievements

We introduce the multi-dimensional permutation-modulation format in coherent optical communication systems and analyze its performance in a systematic ｍanner, focusing on the power efficiency and the spectral efficiency. Other than the polarization-switched quadrature phase-shift keying (PS-QPSK) modulation format and the polarization quadrature-amplitude modulation (POL-QAM) format, we find novel 4-dimensional modulation formats which have better trade-off relations between the power efficiency and the spectral efficiency.In addition, we find that we can approach the Shannon limit as the signal dimension is increased.

Research Products

• [Journal Article] Fundamentals of coherent optical fiber communications (2016)
  • Author(s): K. Kikuchi
  • Journal Title: J. Lightwave Technology Volume: 32 Issue: 1 Pages: 157-179
  • DOI: 10.1109/jlt.2015.2463719
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Multi-dimensional permutation-modulation format for coherent optical communications (2015)
  • Author(s): S. Ishimura and K. Kikuchi
  • Journal Title: Optics Express Volume: 23 Issue: 12 Pages: 15587-15597
  • DOI: 10.1364/oe.23.015587
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Eight-state trellis-coded optical modulation with signal constellation of four-dimensional M-ary quadrature-amplitude modulation (2015)
  • Author(s): S. Ishimura and K. Kikuchi
  • Journal Title: Optics Express Volume: 23 Issue: 5 Pages: 6692-6704
  • DOI: 10.1364/oe.23.006692
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Multi-level signaling in the Stokes space and its application to large-capacity optical communications (2014)
  • Author(s): K. Kikuchi and S. Kawakami
  • Journal Title: Optics Express Volume: 22 Pages: 7374-7387
  • Peer Reviewed
• [Journal Article] Electronic polarization-division demultiplexing based on digital signal processing in intensity-modulation direct-detection optical communication systems (2014)
  • Author(s): K. Kikuchi
  • Journal Title: Optics Express Volume: 22 Pages: 1971-1980
  • Peer Reviewed
• [Presentation] Coherent optical communication technology (2016)
  • Author(s): K. Kikuchi
  • Organizer: OptoElectronics and Communications Conference/ Conference on Photonics in Switching (OECC/PS2016)
  • Place of Presentation: 朱鷺メッセ（新潟県新潟市）
  • Year and Date: 2016-07-03
  • Int'l Joint Research / Invited
• [Presentation] Coherent Optical Communications: Past, Present and Future (2016)
  • Author(s): K. Kikuchi
  • Organizer: Conference on Optoelectronics & Optical Communications (COOC2016)
  • Place of Presentation: Busan, Korea
  • Year and Date: 2016-06-01
  • Invited
• [Presentation] Fast decoding and LLR-computation algorithms for high-order set-partitioned 4D-QAM constellations (2015)
  • Author(s): S. Ishimura and K. Kikuchi
  • Organizer: European Conference on Optical Communication (ECOC2015)
  • Place of Presentation: Valencia, Spain
  • Year and Date: 2015-09-27
  • Int'l Joint Research
• [Presentation] The past, present, and future of coherent optical fiber communications (2015)
  • Author(s): K. Kikuchi
  • Organizer: Advanced Photonics Congress
  • Place of Presentation: Boston, MA, USA
  • Year and Date: 2015-06-27
  • Int'l Joint Research / Invited
• [Presentation] Experimental demonstration of the 8-state trellis-coded 4D-QPSK optical modulation format (2015)
  • Author(s): S. Ishimura and K. Kikuchi
  • Organizer: Optical Fiber Communications Conference (OFC 2015)
  • Place of Presentation: Los Angeles, CA, USA
  • Year and Date: 2015-03-22 – 2015-03-26
• [Presentation] セット分割4 次元QAM 信号の高速復号アルゴリズムの提案 (2015)
  • Author(s): 石村昇太, 菊池和朗
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 立命館大学（滋賀県草津市）
  • Year and Date: 2015-03-10 – 2015-03-13
• [Presentation] ディジタルコヒーレント通信を支える変復調技術とその最新動向-多次元光変復調技術- (2015)
  • Author(s): 菊池和朗
  • Organizer: 電子情報通信学会第二種研究会EXAT研究会
  • Place of Presentation: 宝山ホール（鹿児島県鹿児島市）
  • Year and Date: 2015-02-15
  • Invited
• [Presentation] 8 状態トレリス符号化4D-QPSK光変調方式の実験的検証 (2014)
  • Author(s): 石村昇太, 菊池和朗
  • Organizer: 電子情報通信学会光通信システム研究会
  • Place of Presentation: NHK広島放送局（広島県広島市）
  • Year and Date: 2014-11-13 – 2014-11-14
• [Presentation] 多次元光変調方式 (2014)
  • Author(s): 菊池和朗
  • Organizer: 電子情報通信学会OCS第二種研究会
  • Place of Presentation: 東工大大岡山キャンパス蔵前会館（東京都目黒区）
  • Year and Date: 2014-07-31
  • Invited
• [Presentation] 8-State trellis-coded optical modulation schemes with 4-dimensional set partitioning (2014)
  • Author(s): S. Ishimura and K. Kikuchi
  • Organizer: OptoElectronics and Communication Conference and Australian Conference on Optical Fibre Technology 2014 (OECC/ACOFT 2014)
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2014-07-06 – 2014-07-10
• [Presentation] 16-ary Stokes-vector modulation enabling DSP-based direct detection at 100 Gbit/s (2014)
  • Author(s): K. Kikuchi and S. Kawakami
  • Organizer: Optical Fiber Communications Conference (OFC 2014)
  • Place of Presentation: San Francisco (USA)
• [Presentation] Multi-dimensional permutation modulation aiming at both high spectral efficiency and high power efficiency (2014)
  • Author(s): S. Ishimura and K. Kikuchi
  • Organizer: Optical Fiber Communications Conference (OFC 2014)
  • Place of Presentation: San Francisco (USA)
• [Presentation] 強度変調・直接検波光通信システムにおけるディジタル信号処理を用いた偏波多重分離技術 (2014)
  • Author(s): 菊池和朗
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 新潟 （新潟大学）
• [Presentation] 4次元セット分割を適用した8状態トレリス符号化光変調方式の提案 (2014)
  • Author(s): 石村昇太，菊池和朗
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 新潟 (新潟大学）
• [Presentation] Blind equalization and carrier-phase recovery in QPSK coherent optical receivers based on modified constant-modulus algorithm (2013)
  • Author(s): Md. S. Faruk and K. Kikuchi
  • Organizer: The Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2013) & Optoelectronics and Communications Conference (OECC 2013)/ Photonics in Switching (PS 2013)
  • Place of Presentation: 京都 （国立京都国際会館）
• [Presentation] Coherent optical communications: past, present and future (2013)
  • Author(s): K. Kikuchi
  • Organizer: The Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2013) & Optoelectronics and Communications Conference (OECC 2013)/ Photonics in Switching (PS 2013)
  • Place of Presentation: 京都 （国立京都国際会館）
  • Invited
• [Presentation] Proposal of optical-sampling-based constellation monitor for DP-QPSK signals (2013)
  • Author(s): K. Kikuchi and S. Y. Set
  • Organizer: The Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2013) & Optoelectronics and Communications Conference (OECC 2013)/ Photonics in Switching (PS 2013)
  • Place of Presentation: 京都 （国立京都国際会館）
  • Invited
• [Presentation] ディジタルコヒーレント光通信システムの概要 (2013)
  • Author(s): 菊池和朗
  • Organizer: 電子情報通信学会ソイエティ大会
  • Place of Presentation: 福岡 (福岡工業大学）
  • Invited
• [Presentation] ディジタルコヒーレント光通信の基礎 (2013)
  • Author(s): 菊池和朗
  • Organizer: 電子情報通信学会光通信システム研究会
  • Place of Presentation: 東京 (すみだ産業会館）
  • Invited
• [Presentation] ストークス空間での多値化技術と大容量コヒーレント光伝送への応用 (2013)
  • Author(s): 菊池和朗，川上彰二郎
  • Organizer: 電子情報通信学会光通信システム研究会
  • Place of Presentation: 東京 (すみだ産業会館）
• [Presentation] コヒーレント光通信システムにおける多次元変復調方式の検討 (2013)
  • Author(s): 石村昇太, 菊池和朗
  • Organizer: 電子情報通信学会光通信システム研究会
  • Place of Presentation: 福岡 （門司港レトロ）
• [Patent(Industrial Property Rights)] 光信号受信装置、ストークスベクトル処理回路及び光信号送受信システム (2014)
  • Inventor(s): 菊池和朗，川上彰二郎
  • Industrial Property Rights Holder: 菊池和朗，川上彰二郎
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2014-006118
  • Filing Date: 2014-01-16
• [Patent(Industrial Property Rights)] 信号処理方法，検波方法および検波装置 (2013)
  • Inventor(s): 菊池和朗，セット ジ イヨン
  • Industrial Property Rights Holder: 菊池和朗，セット ジ イヨン
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2013-110361
  • Filing Date: 2013-05-24