Wide-Bandwidth and High-Sensitivity Measurement Technique of Intrinsic Modulation Response of Semiconductor Lasers

DOI PDF 参考文献33件 オープンアクセス
  • Nobuhide Yokota
    Research Institute of Electrical Communication, Tohoku University, Sendai, Japan
  • Tomoharu Nohara
    Research Institute of Electrical Communication and Graduate School of Engineering, Tohoku University, Sendai, Japan
  • Hiroshi Yasaka
    Research Institute of Electrical Communication, Tohoku University, Sendai, Japan

書誌事項

公開日
2023-08
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/legalcode
DOI
  • 10.1109/jphot.2023.3296203
公開者
Institute of Electrical and Electronics Engineers (IEEE)

説明

We propose and demonstrate a measurement technique of the intrinsic modulation responses of semiconductor lasers with high sensitivity in a wide modulation frequency range. The technique is based on the two-tone optical modulation and lock-in detection of an optical spectrum having modulation sidebands. The measured modulation response of a conventional 1.55-μm distributed feedback laser indicates that the lock-in detection improves the signal-to-noise ratio by 22 dB. This significant improvement allows measurement of the modulation response up to 75 GHz even though the 3-dB bandwidth of the distributed feedback laser is only 11 GHz. Our technique is suitable for evaluation of the intrinsic modulation response of wide-bandwidth semiconductor lasers free from device parasitic effects.

収録刊行物

  • IEEE Photonics Journal

    IEEE Photonics Journal 15 (4), 1-6, 2023-08

    Institute of Electrical and Electronics Engineers (IEEE)

参考文献 (33)*注記

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