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http://dx.doi.org/10.4218/etrij.12.0212.0173

High-Speed Traveling-Wave Photodetector with a 3-dB Bandwidth of 410 GHz  

Park, Jeong-Woo (Creative & Challenging Research Division, ETRI)
Han, Sangpil (Creative & Challenging Research Division, ETRI)
Lee, Donghun (Convergence Components & Materials Research Laboratory, ETRI)
Ryu, Han-Cheol (Creative & Challenging Research Division, ETRI)
Shin, Jun-Whan (Creative & Challenging Research Division, ETRI)
Kim, Namje (Creative & Challenging Research Division, ETRI)
Yoon, Young-Jong (Creative & Challenging Research Division, ETRI)
Ko, Hyunsung (Creative & Challenging Research Division, ETRI)
Park, Kyung Hyun (Creative & Challenging Research Division, ETRI)
Publication Information
ETRI Journal / v.34, no.6, 2012 , pp. 942-945 More about this Journal
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.
Keywords
Photodetector; waveguide photodetector; traveling-wave photodetector;
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