USA flag logo/image

An Official Website of the United States Government

Ultra-fast, High Saturation Current, InGaAs/InP Photodetectors

Award Information

Agency:
Department of Defense
Branch:
Defense Advanced Research Projects Agency
Award ID:
74364
Program Year/Program:
2005 / STTR
Agency Tracking Number:
05ST1-0074
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Discovery Semiconductors, Inc.
119 Silvia Street Ewing, NJ 08628-
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2005
Title: Ultra-fast, High Saturation Current, InGaAs/InP Photodetectors
Agency / Branch: DOD / DARPA
Contract: W31P4Q-05-C-R196
Award Amount: $99,000.00
 

Abstract:

In Phase I, we propose to develop high saturation current photodiodes that will meet the following design criteria: (a) Responsivity > 0.7 A/W, (b) 1 dB compression current > 100 mA, (c) Bandwidth > 10 GHz, and (d) Wavelength response of 1300 to 1550 nm. Two different photodiode designs will be tested for maximum saturation current: Partially Depleted Absorber (PDA) and Charge Compensated Uni Traveling Carrier (CC UTC). A comparative study of these two designs will determine which structure is more suitable for the above design goals. As saturation current levels increase above 100 mA, the problem of excessive Joule heating (multiple of voltage bias and photodiode current) creates the problem of "thermal runaway" leading to eventual device failure. We will investigate "wafer bonding" of InGaAs photodiodes to silicon wafers for better heat removal caused by Joule heating. This will ultimately lead to a more reliable photodiode. In a potential Phase II, we will expand the bandwidth of the photodiodes to 100 GHz with current saturation limit up to 50 mA.

Principal Investigator:

Abhay M. Joshi
President and CEO
6094341311
abhay@chipsat.com

Business Contact:

Abhay M. Joshi
President and CEO
6094341311
abhay@chipsat.com
Small Business Information at Submission:

Discovery Semiconductors, Inc.
119 Silvia Street Ewing, NJ 08628

EIN/Tax ID: 223140182
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Research Institution Information:
UNIV. OF TEXAS AUSTIN
Department of Electrical Eng., 1 University Station C0803
Austin, TX 78712
Contact: Joe Campbell
Contact Phone: (512) 471-9669
RI Type: Nonprofit college or university