Characterization of microwave interaction in electroabsorption-modulated DFB lasers

Chao Jing; Yutong He; Yali Zhang; Zhiyao Zhang; Shangjian Zhang; Yong Liu

doi:10.1117/12.2602328

9 October 2021 Characterization of microwave interaction in electroabsorption-modulated DFB lasers

Chao Jing, Yutong He, Yali Zhang, Zhiyao Zhang, Shangjian Zhang, Yong Liu

Proceedings Volume 11891, Semiconductor Lasers and Applications XI; 118910X (2021) https://doi.org/10.1117/12.2602328
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

Electroabsorption-modulated laser (EML) is integrated by distributed feedback (DFB) laser and electro-absorption modulator (EAM). Microwave interaction in the EML has been observed to limit modulation performance especially in high frequency region. In this work, the EML is investigated as a three-port network with two electrical inputs and one optical output. Scattering matrix of the device was derived theoretically and obtained experimentally. Thus, microwave equivalent circuit model of the EML can be established and microwave interaction between the DFB laser and the EAM was successfully extracted. The results reveal that microwave interaction within an integrated EML contains both electrical isolation and optical coupling. The electrical isolation is bidirectional while the optical coupling is directional, which aggravates the performance of the EML. This result can provide a reference for further device optimization design.

Citation Download Citation

Chao Jing, Yutong He, Yali Zhang, Zhiyao Zhang, Shangjian Zhang, and Yong Liu "Characterization of microwave interaction in electroabsorption-modulated DFB lasers", Proc. SPIE 11891, Semiconductor Lasers and Applications XI, 118910X (9 October 2021); https://doi.org/10.1117/12.2602328

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