High-speed traveling-wave photodetector with a 3-dB bandwidth of 410 GHz

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Abstract

A high-speed traveling-wave photodetector (TWPD) with an InGaAs absorber is designed and realized. The bandwidth of the TWPD is measured using electro-optic sampling techniques. The bandwidth is 410 GHz, which shows that the RC limitation is overcome. While the TWPD shows a low responsivity of 0.06 A/W at 1,550 nm, this value can be improved through further optimization of the structure without a sacrifice in bandwidth. © 2012 ETRI.

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Park, J. W., Han, S., Lee, D., Ryu, H. C., Shin, J. W., Kim, N., … Park, K. H. (2012). High-speed traveling-wave photodetector with a 3-dB bandwidth of 410 GHz. ETRI Journal, 34(6), 942–945. https://doi.org/10.4218/etrij.12.0212.0173

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