Power Efficient Optical Serial-to-Parallel Conversion using Linear Nyquist pulse generation and Time-Lens Technique

• Project/Area Number: 15K13989
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Osaka University
• Principal Investigator: KONISHI Tsuyoshi 大阪大学, 工学研究科, 准教授 (90283720)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: 光信号処理 / シリアルパラレル変換 / シリアル－パラレル変換

Outline of Final Research Achievements

Power efficient optical serial-to-parallel conversion is investigated as an indispensable frontend subsystem of ultra-wide band systems for bandwidth matching. Here, we pursue a linear technique based on fractional Orthogonal Frequency Division Multiplexing (OFDM) scheme. A fractional OFDM can mediate between Nyquist Optical Time Division Multiplexing (N-OTDM) and OFDM without any nonlinear signal processing and it is expected to incorporate both benefits of the densest serial and parallel features of N-OTDM and OFDM as well as power efficiency of a linear technique. The preliminary operation of serial-to-parallel conversion is successfully verified so that a 10 GHz sine wave serial signal could be optically sampled by triple Nyquist pulses and be converted to three parallel intensity modulated signals at three Fr-OFDM channels under the condition of root mean squared error below 5%.

Research Products

• [Int'l Joint Research] Rome University Tre(イタリア)
• [Journal Article] Power efficient optical serial-to-parallel conversion using fractional OFDM-based linear technique (2017)
  • Author(s): M. Hiraoka, T. Nagashima, G. Cincotti, S. Shimizu, Y. Yamasaki, K. Hattori, M. Okuno, S. Mino, A, Himeno, N. Wada, H. Uenohara, and T. Konishi
  • Journal Title: IEICE Electronics Express Volume: 14 Issue: 6 Pages: 20170099-20170099
  • DOI: 10.1587/elex.14.20170099
  • NAID: 130006895156
  • ISSN: 1349-2543
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Optical Serial-to-Parallel Conversion based on Fractional OFDM scheme (2016)
  • Author(s): M. Hiraoka, T. Nagashima, B. Karanov, G. Cincotti, S. Shimizu, T. Murakawa, M. Hasegawa, K. Hattori, M. Okuno, S. Mino, A. Himeno, N. Wada, H. Uenohara, and T. Konishi
  • Organizer: OECC/PS 2016
  • Place of Presentation: Niigata, Japan
  • Year and Date: 2016-07-03
  • Int'l Joint Research
• [Presentation] Fractional-OFDM Transmission for Time/Frequency Multiplexing in Elastic Networks (2015)
  • Author(s): T. Konishi, Takuya Murakawa, T. Nagashima, Satoshi Shimizu, Makoto Hasegawa, Kuninori Hattori, Masayuki Okuno, Shinji Mino, Akira Himeno, Naoya Wada, Hiroyuki Uenohara and Gabriella Cincotti
  • Organizer: Asia Communications and Photonics Conference (ACP)2015
  • Place of Presentation: Hong Kong, China
  • Year and Date: 2015-11-19
  • Int'l Joint Research / Invited
• [Presentation] Break Even Point Analysis of Photonic Analog-to-Digital Conversion on Power Consumption (2015)
  • Author(s): T. Konishi
  • Organizer: 41st EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION (ECOC 2015)
  • Place of Presentation: Valencia, Spain
  • Year and Date: 2015-09-27
  • Int'l Joint Research / Invited