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Over 100 GHz 3-dB down bandwidth by direct modulation of a coupled cavity DFB-LD due to photon-photon resonance

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Abstract

This paper reports on 3-dB down bandwidth of 110.6 GHz by direct modulation of a coupled cavity DFB-LD with phase-shifted/uniform gratings due to photon-photon resonance when the injected current is 3.5 times the threshold current. The photon-photon resonance between the main-mode and sub-mode is analyzed from the viewpoint of threshold gain and detuning between the main-mode and sub-mode. It is found that the detuning between the main-mode and sub-mode contributes to enhancement of the 3-dB down bandwidth.

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  1. College of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga, 525-8577, Japan

    Takahiro Numai

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  1. Takahiro Numai
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Correspondence to Takahiro Numai.

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This article is part of the Topical Collection on Numerical Simulation of Optoelectronic Devices, Guest edited by Stefan Schulz, Silvano Donati, Karin Hinzer, Weida Hu, Slawek Sujecki, Alex Walker and Yuhrenn Wu.

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Numai, T. Over 100 GHz 3-dB down bandwidth by direct modulation of a coupled cavity DFB-LD due to photon-photon resonance. Opt Quant Electron 53, 92 (2021). https://doi.org/10.1007/s11082-020-02713-x

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  • DOI: https://doi.org/10.1007/s11082-020-02713-x

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