Title :
Travelling wave distributed photodetectors with backward wave cancellation for improved AC efficiency
Author :
Murthy, S. ; Jung, T. ; Wu, M.C. ; Sivco, D.L. ; Cho, A.Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
7/18/2002 12:00:00 AM
Abstract :
In travelling wave distributed photodetectors, half the photocurrent generated in each individual photodiode is lost in the input termination. Here, a multi-section transmission line for cancellation of the backward travelling wave to achieve up to 6 dB improvement in the RF magnitude response without any bandwidth reduction is proposed and demonstrated
Keywords :
III-V semiconductors; aluminium compounds; coplanar transmission lines; gallium arsenide; indium compounds; photodetectors; AC efficiency; DC responsivity; InAlGaAs; InAlGaAs system; RF magnitude response; backward wave cancellation; dissimilar coplanar strips; input termination; multi-section transmission line; photocurrent generation; travelling wave distributed photodetectors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020532
