Open AccessHigh‐Speed Traveling‐Wave Photodetector with a 3‐dB Bandwidth of 410 GHz
Author(s) -
Park JeongWoo,
Han Sangpil,
Lee Donghun,
Ryu HanCheol,
Shin JunWhan,
Kim Namje,
Yoon YoungJong,
Ko Hyunsung,
Park Kyung Hyun
Publication year - 2012
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.12.0212.0173
Subject(s) - photodetector , bandwidth (computing) , responsivity , optics , optoelectronics , materials science , physics , engineering , telecommunications
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.