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We present segmented transmission-line (TML) electroabsorption modulators (EAM) matched to 50 Ω. The devices show excellent high frequency performance up to 50 GHz, and exhibit a maximum model-extrapolated 3 dBe bandwidth of 90 GHz. Design considerations and optimization techniques for periodic segmented TML-EAM are discussed. Also methods used for the device fabrication are presented.