Frequency responses of graded-bandgap low-noise avalanche photodiodes

Frequency responses of graded-bandgap low-noise avalanche photodiodes using Al
c
Ga
1-c
As, GaAS
1-c
Sb
c
, and In
c
Ga
1-c
As have been computed using a novel hybrid computational technique. Response characteristics of nongraded structures have also been computed and a comparison is made.