Title :
GRIN Lens Coupled Top-Illuminated Highly Linear InGaAs Photodiodes
Author :
Joshi, Abhay ; Datta, Shubhashish ; Becker, Don
Abstract :
We report a graded index (GRIN) lens-coupled highly linear InGaAs photodiode with a third-order harmonic output intercept point of 54 dBm and an estimated third output intercept point of 49.2 dBm. Optical beam shaping through GRIN lens coupling enhances the third-order intercept by 8 dB as compared to single-mode fiber coupled photodiodes.
Keywords :
Indium gallium arsenide; Lenses; Linearity; Optical beams; Optical coupling; Optoelectronic and photonic sensors; Photodiodes; RF signals; Radio frequency; Sensor arrays; Optical receivers; photodiodes;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.928532
