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

被引：0
|
作者：
Numai, Takahiro [1 ]
机构：
[1] Ritsumeikan Univ, Coll Sci & Engn, 1-1-1 Noji Higashi, Kusatsu, Shiga 5258577, Japan
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2021年 / 53卷 / 02期
关键词：
Semiconductor laser; Coupled cavity; Direct modulation; Threshold gain; Detuning; FREQUENCY; ENHANCEMENT;
D O I：
10.1007/s11082-020-02713-x
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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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页数：12
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