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Studies on Wavelength Selective Filter and Light Source for Wavelength Division Multiplexing Utilizing the Third-Order Nonlinear Effect in Optical Fibers

Research Project

Project/Area Number 09450026
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionMuroran Institute of Technology

Principal Investigator

IMAI Masaaki  Muroran Institute of Technology, Department of Electrical and Electronic Ehgineering, Professor, 工学部, 教授 (80002103)

Co-Investigator(Kenkyū-buntansha) IMAI Yoh  Kyushu Institute of Technology, Department of Computer Science and Electronics,, 情報工学部, 助教授 (20151665)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥10,900,000 (Direct Cost: ¥10,900,000)
Fiscal Year 1998: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1997: ¥7,500,000 (Direct Cost: ¥7,500,000)
KeywordsThird-Order Nonlinear Effect / Nonlinear Directional Fiber Coupler / Wavelength Dependent Coupling / Supercontinuum Spectrum / Optical Soliton Compression / Chromatic Dispersion Management / Group Velocity Dispersion / Nonlinear Refractive Index / 光制御光波長フィルター / 郡速度分散
Research Abstract

1. When a fiber directional coupler that is fabricated by fusing and elongating two single-mode fibers is excited with an intense laser light, an intensity dependent index of refraction is induced due to an optical Kerr effect and it modifies the linear coupling characteristics of the coupler. An abrupt change of power transmission at coupled and through ports in the coupler can be observed at a certain wavelength of incident light and it was found that the critical wavelength is shifted to a longer wavelength as the incident power increases. The experimental verification using a mode-locked Ti : sapphire laser that produces approximately 50 femtosecond pulses at wavelengths of 800-850nm with a repetition rate of 80MHz is followed by the theory. Although some discrepancies exist between theoretical calculations and experimental results, all-optical switching of the femtosecond pulses was confirmed in a nonlinear directional fiber coupler.
2. The supercontinuum (SC) generation in optical … More fibers is attractive for high-condensed wavelength-division (or frequency-division) multiplexing system since it provides short optical pulses over a broad spectrum range. In this study, some computer simulations are carried out for the SC spectrum from adispersion-flattened fiber with group velocity dispersion varied along the axis. Taking into account of higher-order dispersion effects (the third, fourth, and fifth-order ones), higher-order nonlinear effects (self-steepening and stimulated Raman scattering (SRS) effects), and wavelength dependent losses, we concluded that ( i )a dispersion-decreasing fiber with group velocity dispersion being convex of the wavelength at two zero-dispersion wavelengths as well as ( ii )a fiber having an increasing nonlinear effect (or equivalently, decreasing effective core area) along the axis, and for an incident pulse (iii)the excitation of higher-order soliton that accompanies a higher peak power of optical pulses are desirable for efficient SC generation. Less

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (27 results)

All Other

All Publications (27 results)

  • [Publications] Masaaki Imai: "Optical Kerr coefficient measurement in coiled high-birefringent fibers" Applied Optics. 37・6. 1010-1015 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoh Imai: "Polarization characteristics of amplified Rayleigh backscattering light in erbium-doped optical fibers" Optical Engineering. 37・2. 543-546 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoh Imai: "Dependence of four-photon mixing spectrum around zero-dispersion wavelength on fiber length" Optics Communicatons. 149・4-6. 326-330 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai: "Wavelength selective coupling and switching in a nonlinear fused-tapered coupler" Technical Digest of Third Optoelectronics and Communications Conference (OECC'98). 14P-54. 294-295 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai: "A fused-tapered fiber coupler all- optical switch using femtosecond optical pulses" Proceedings of SPIE in Applications of Photonic Technology 3 (ICAPT'98). 3491. 45-50 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai: "All-optical switching of femtosecond pulses in a nonlinear fused-tapered fiber coupler" IEICE Trans.Electronics, Joint Special Issue on Third Optoelectronics and Communications Conference. E82-C (掲載予定). (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai et al: ""Optical Kerr coefficient measurement in coiled high-birefringent fibers"" Applied Optics. 37・6. 1010-1015 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoh Imai: ""Polarization characteristics of amplified Rayleigh backscattering light in erbium-doped optical fibers"" Optical Engineering. 37・2. 543-546 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoh Imai et al: ""Dependence of four-photon mixing spectrum around zero-dispersion wavelength on fiber length"" Optics Communications. 149・4-6. 326-330 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai et al: ""Wavelength selective coupling and switching in a nunlinear fused-tapered coupler"" Technical Digest of Third Optoelectronics and Communications Conference(OECC'98). 14P-54. 294-295 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai et al: ""A fused-tapered fiber coupler all-optical switch using femtosecond optical pulses"" Proceedings of SPIE in Applications of Photonic Technology 3(ICAPT'98). 3491. 45-50 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Masaaki Imai et al: ""All-optical switching of femtosecond pulses in a nonlinear fused-tapered fiber coupler"" IEICE Trans.Electronics, Joint Special Issue on Third Optoelectronics and Communications Conference. E82-C(to be published). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 野川謙太: "非線形光増幅ループミラー(NALM)を用いた全光スイッチングデバイス" 電子情報通信学会技術研究報告,OPE 98-4. 98・43. 19-24 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 今井正明: "非線形光ファイバカップラー(NLDC)の波長選択結合及びスイッチング特性" 電子情報通信学会技術研究報告,PS 98-11. 98・110. 13-18 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 曽根宏靖: "伝搬方向特性変化ファイバによるSUPERCONTINUUM発生およびパルス圧縮効果の数値解析" 電子情報通信学会技術研究報告,CS 98-50. 98・148. 13-18 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Masaaki Imai: "Wavelength selective coupling and switchingin a nonlinear fused-tapered coupler" Technical Digest of Third Optoelectronics and Communications Conference(OECC'98). 14P-54. 294-295 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Masaaki Imai: "A fused-tapered fiber coupler all-optical switch using femtosecond optical pulses" Proceedings of SPIE in Applications of Photonic Technology 3(ICAPT'98). 3491. 45-50 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 林 涛: "融着テーパ形光ファイバモード変換器の作製と実験及び数値解析" 電子情報通信学会技術研究報告,OFT 98-28. 98・265. 53-59 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 曽根宏靖: "波長依存損失と高次の分散及び非線形効果を考慮した分散フラット/減少ファイバによるSupercontinuum発生" 電子情報通信学会技術研究報告,OCS 98-72. 98・412. 31-36 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 河野健司: "分散フラット/減少ファイバによるSUPERCONTINUUM発生の数値解析" 1999年電子情報通信学会総合大会講演論文集,発表予定. B-13-6. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Masaaki Imai: "All-optical switching of femtosecond pulses in a nonlinear fused-tapered fiber coupler" IEICE Trans.Electronics,Joint Special Issue on Third Optoelectronics and Communications Conference. E82-C(掲載予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Masaaki Imai: "Optical Kerr coefficient measurement in coiled high-birefringent fibers" Applied Optics. 37・6. 1010-1015 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 梶沼 雅仁: "非線形光ファイバカップラー(NLDC)の波長選択結合特性" 1998年電子情報通信学会総合大会講演論文集、発表予定. C-3-75. 241 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 石井 雄五: "非線形光増幅ループミラー(NALM)を用いた全光スイッチング" 1998年電子情報通信学会総合大会講演論文集、発表予定. C-3-134. 300 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 曽根 宏靖: "伝搬方向特性変化ファイバによるSUPERCONTINUUM発生およびパルス圧縮効果の解析" 1998年電子情報通信学会総合大会講演論文集、発表予定. C-4-54. 428 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoh Imai: "Polarization characteristics of amplified Rayleigh backscattering light in erbium-doped optical fibers" Optical Engineering. 37・2. 543-546 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoh Imai: "Dependence of four-photon mixing spectrum around zero-dispersion wavelength on fiber length" Optics Communications、掲載予定. 145. (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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