Abhay Joshi, Jim Rue, and Shubhashish Datta
Discovery Semiconductors, Inc.
119 Silvia Street
Ewing, NJ 08628, USA
Tel: 609-434-1311, Fax: 609-434-1317
We report a large-area quad photoreceiver (2x2 array) having an equivalent input current noise density of 3.2 pA/ Hz per quadrant up to a 3-dB bandwidth of 20 MHz. The low-noise photoreceiver performance is enabled by a 1-mm diameter quad p-i-n InGaAs photodiode having 2.5-pF capacitance per quadrant at 5-V reverse bias.
* IEEE Photonics Technology Letters, VOL. 21, NO. 21, NOVEMBER 1, 2009