Compact, Low Cost APD Arrays with Built-in Optical Amplification

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$69,594.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
NNG04CA72C
Award Id:
71997
Agency Tracking Number:
034738
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1450 South Rolling Road, Baltimore, MD, 21227
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
171899719
Principal Investigator:
Ayub Fathimulla
Principal Investigator
(410) 455-5830
ayub@epiwafers.com
Business Contact:
Leye Aina
Business Official
(410) 455-5594
epiwafers@erols.com
Research Institute:
n/a
Abstract
The overall goal of the proposed program by Epitaxial Technologies is to develop a compact, low-cost, low power, low noise and ultra-sensitive Avalanche Photo Diode (APD) arrays with built-in optical pre-amplification (in addition to internal electrical gain) and having a fill factor and bandwidth of 90% and 5.0 GHz respectively. We will accomplish this by developing novel APD structures and integrating the APDs with vertical cavity semiconductor optical amplifiers (VCSOAs). In Phase I of this project, we will design, model and simulate the performance of the APD arrays with built-in optical pre-amplification having -47 dBm sensitivity and lower noise than existing APD operating at 1550 nm. We will design and fabricate the 4 x 4 photodetector array with internal optical gain of 20 dB and assess its performance. In Phase II, we will design, fabricate and test the 256 x 256 arrays along with monolithic photoreceivers using detectors having built-in optical preamplifier and internal gain. In particular, we will combine photodetector arrays having built-in optical preamplifier with the Readout Integrated Circuits (ROIC) using an innovative bonding technique at the wafer level, in order to demonstrate single photon counting by operating in the Geiger-mode for solid state imaging LADAR receivers.

* information listed above is at the time of submission.

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