We report a top-illuminated, GRIN lens-coupled InGaAs photodiode with an impulse response linearity exceeding 2.5V peak-to-peak at 7.5% duty cycle and 100% modulation depth. A ~100% improvement over single mode fiber-coupled photodiodes is experimentally demonstrated.
© 2008 Optical Society of America
(040.0040) Detectors : Detectors
(040.5160) Detectors : Photodetectors
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors
A. Joshi, S. Datta, and D. Becker, "Improved Impulse Response of Top-Illuminated InGaAs Photodiodes Using GRIN Lens Coupling," in Optical Fiber Communication Conference/National Fiber Optic Engineers Conference, OSA Technical Digest (CD) (Optical Society of America, 2008), paper OMK3.