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1989 Fiscal Year Final Research Report Summary

Wavelength Stabilization of a Semiconductor Laser in High-Speed Modulation Using Saturated Absorption Spectroscopy of Atomic Lines

Research Project

Project/Area Number 63550250
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 電子通信系統工学
Research InstitutionNiigata University

Principal Investigator

SHIMBA Minoru  Niigata University, Engineering, Professor, 工学部, 教授 (30162803)

Co-Investigator(Kenkyū-buntansha) SATO Takashi  Niigata University, Engineering, Associate Professor, 工学部, 助教授 (10143752)
Project Period (FY) 1988 – 1989
KeywordsSemiconductor Laser / Wavelength Stabilization / Modulation / Absorption Spectroscopy
Research Abstract

We stabilized the oscillation frequency of a semiconductor laser at 800 nm wavelength region under direct frequency shift keying (FSK) using the Rb absorption lines in this year. The better stability had already been observed in the peak-hold method in comparison with the traditional method of the unmodulated case. Therefore we investigated the stability under some different FSK conditions, i.e., some different frequency shifts and duty ratios in this year.
1.We observed that the frequency stability in the peak-hold method was improved under all frequency shift conditions compared with the traditional method at duty ratio 50 per cent. The best stability was obtained at the frequency shift which was expected to be the best value by the theoretical estimation. 2.We observed that the stability obtained in the peak-hold method depended much less on the duty ratio than in the traditional method. This result means the peak-hold method is useful under the generalized modulation condition. 3.The wavelength reference point for the stabilization may be changed under the modulation in the traditional method. However, the stabilization point in the peak-hold method also depended much less on the duty ratio than in the traditional method.
We investigated the peak-hold method instead of the method using the saturated absorption spectroscopy of atomic lines for the stabilization in this year. This is because we thought that the peak-hold method should be investigated thoroughly. We will investigate the better stability at the higher modulation frequency and then stabilize the wavelength by the method using the saturated absorption spectroscopy of atomic lines. The stabilization at the wavelength of 1.55 mum will be investigated in the peak-hold method, too.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 佐藤孝: "Frequency Stabilization of a Semiconductor Laser under Direct Frequency Hodulation." Conference on Lasers and Electro-Optics. 304-305 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 斉藤敏紀: "半導体レ-ザの変調パルス幅と周波数安定度" 平成元年度電子情報通信学会信越支部大会論文番号91. (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 斉藤敏紀: "半導体レ-ザにおける周波数安定度の直接(FSK変調パルス幅依存性)" 電子情報通信学会論文誌CI. (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐藤孝: "Frequency Stability of a Semiconductor Laser under Direct FSK" Electronics Letters.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐藤孝: "Frequency Stability of a Semiconductor Laser under Some Direct FSK Hodulation Conditions" IEEE Journal of Quantum Electron.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐藤孝: "Frequency Stabilization of a Semiconductor Laser under Direct FSK" IEEE International Semiconductor Laser Conference.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Takashi Sato: "Frequency Stabilization of a Semiconductor Laser under Direct Frequency Modulation" Conference on Lasers and Electro-Optics (1989) pp.304-305.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshinori Saito: "Frequency Stability of a Semiconductor Laser under Some Modulation Pulse Width Conditions" Shin-Etsu Shibu Conference of IEICE (1989) Paper No.91.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Toshinori Saito: "Dependence of the Frequency Stability of a Semiconductor Laser on the Duty Ratio of Direct FSK Modulation" Trans. IEICE (1990).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Sato: "Frequency Stability of a Semiconductor Laser under Direct FSK" Electronics Letters.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Sato: "Frequency Stability of a Semiconductor Laser under Some Direct FSK Modulation Conditions" IEEE Journal of Quantum Electron.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Takashi Sato: "Frequency Stabilization of a Semiconductor Laser under Direct FSK" IEEE International Semiconductor Laser Conference.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-26  

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