Title :
A novel monolithic distributed traveling-wave photodetector with parallel optical feed
Author :
Murthy, Sanjeev ; Jung, Thomas ; Chau, Tai ; Wu, Ming C. ; Sivco, Deborah L. ; Cho, Alfred Y.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
We report on a novel monolithic distributed traveling wave photodetector with parallel optical feed to an array of individual photodiodes using an integrated multimode interference (MMI) coupler to attain high saturation current. The parallel optical feed reduces the maximum photocurrent and photocurrent density seen by any single photodiode, thus increasing the maximum linear photocurrent of the detector. We have successfully fabricated a device with a maximum linear photocurrent of 20 mA and a responsivity of 0.13 A/W.
Keywords :
integrated optoelectronics; metal-semiconductor-metal structures; optical arrays; optical beam splitters; optical design techniques; optical fabrication; photodetectors; photodiodes; 20 mA; InGaAs-InAlAs-InP; high saturation current; integrated multimode interference coupler; maximum linear photocurrent; monolithic distributed traveling-wave photodetector; parallel optical feed; photocurrent density; photodiode array; responsivity; single photodiode; Detectors; Feeds; High speed optical techniques; Interference; Optical saturation; Optical waveguides; Photoconductivity; Photodetectors; Photodiodes; Radio frequency;
Journal_Title :
Photonics Technology Letters, IEEE
