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Journal Article Optimization of Packaging Design of TWEAM Module for Digital and Analog Applications
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Authors
Kwang Seong Choi, Jong Hyun Lee, Ji Youn Lim, Young Shik Kang, Yong Duck Chung, Jong Tae Moon, Je Ha Kim
Issue Date
2004-12
Citation
ETRI Journal, v.26, no.6, pp.589-596
ISSN
1225-6463
Publisher
한국전자통신연구원 (ETRI)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.4218/etrij.04.0104.0051
Project Code
04MB1200, SoP(System on Package) for 60 GHz Pico cell Communication, Cho Kyoung Ik
Abstract
Packaging technologies for a broadband and narrowband modulator with a traveling wave electro-absorption modulator (TWEAM) device were developed. In developing a broadband modulator, the effects of the device and packaging designs on the broadband performance were investigated. The optimized designs were obtained through a simulation with the result that we developed a broadband modulator with a 3 dB bandwidth of 38 GHz in the electrical-to-optical (E/O) response, an electrical return loss of less than -10 dB at up to 26 GHz, an rms jitter of 1.832 ps, and an extinction ratio of 538 dB in a 40 Gbps non-return to zero (NRZ) eye diagram. For analog application, the effect of the RF termination scheme on the fractional bandwidth was studied. The microstrip line with a double stub as a matching circuit and a laser trimming process were used to obtain an S11 of -34.58 dB at 40 GHz and 2.9 GHz bandwidth of less than -15 dB.
KSP Keywords
3-dB bandwidth, 38 GHz, 6 GHz, Eye Diagram, Fractional Bandwidth(FBW), Microstrip Line, Packaging Design, Return loss(RL), Traveling wave, analog application, electroabsorption modulator(EAM)