Author/Authors :
Ma، Zi-Feng نويسنده , , Li، Xiaowei نويسنده , , Zheng، Xiaoguang نويسنده , , J.C.، Campbell, نويسنده , , Wang، Shuling نويسنده , , R.، Sidhu, نويسنده , , Sun، Xiaoguang نويسنده , , Jr.، Holmes, A.L., نويسنده ,
Abstract :
We report avalanche photodiodes with a "centered-well" multiplication region that have achieved high gain, low noise, and low dark current. The multiplication region consists of an ~80 nm-thick Al/sub 0.2/Ga/sub 0.8/As layer sandwiched between two thin (10~20 nm) layers of Al/sub 0.6/Ga/sub 0.4/As. Monte Carlo simulation shows the beneficial effect of spatial modulation of the ionization rates in this structure compared to homojunctions.
Keywords :
Laminated waveguide , low-temperature co-fired ceramic (LTCC) , rectangular waveguide (RWG) , millimeter wave , waveguide transition
