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Enhancement of the static extinction ratio by using a dual-section distributed feedback laser integrated with an electro-absorption modulator

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Abstract

We report on the enhancement of the static extinction ratio by using a dual-section distributed feedback laser diode integrated with an electro-absorption modulator. A directly- modulated dual-section laser can provide improved modulation performance under a low bias level (i.e., below the threshold level) compared with a standard directly-modulated laser. By combining the extinction ratio from a dual-section laser with that from an electro-absorption modulator section, a total extinction ratio of 49.6. dB are successfully achieved.

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Authors and Affiliations

  1. Department of Electronic & Electrical Engineering, College of Science and Technology, Hongik University, Sejong, 30016, Korea

    Chun-Hyung Cho

  2. Department of Neurology, Dongguk University Ilsan Hospital, Goyang, 10326, Korea

    Jongseong Kim

  3. School of Electronic and Electrical Engineering, Hongik University, Seoul, 04066, Korea

    Hyuk-Kee Sung

Authors
  1. Chun-Hyung Cho
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  2. Jongseong Kim
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  3. Hyuk-Kee Sung
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Correspondence to Hyuk-Kee Sung.

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Cho, CH., Kim, J. & Sung, HK. Enhancement of the static extinction ratio by using a dual-section distributed feedback laser integrated with an electro-absorption modulator. Journal of the Korean Physical Society 69, 745–748 (2016). https://doi.org/10.3938/jkps.69.745

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  • DOI: https://doi.org/10.3938/jkps.69.745

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