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Improved Impulse Response of Top-Illuminated InGaAs Photodiodes using GRIN Lens Coupling (2008)

Abhay Joshi, Shubhashish Datta, and Don Becker
Discovery Semiconductors, Inc.
119 Silvia Street
Ewing, New Jersey, 08628, USA


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.


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