A Simple High-Performance Avalanche Photodiode for Long-      Wavelength Optical Communications
{'Code': '15030000', 'Directorate': {'Abbreviation': 'TIP', 'LongName': 'Dir for Tech, Innovation, & Partnerships'}, 'Division': {'Abbreviation': 'TI', 'LongName': 'Translational Impacts'}}
{'SignBlockName': 'Ritchie B. Coryell', 'PO_EMAI': None, 'PO_PHON': None}
This proposal is to continue the highly successful Phase I work for             optimization of the unique indium gallium arsenide (InGaAs) structure           for a novel, simplified avalanche photodiodes (APD for the 1000-1700            nm spectral region).  The Phase I work showed that the structure could          be used to double the breakdown voltage, reduce edge breakdown,                 produce avalanche gains of 3 and leakage currents of 1 nA at half the           break down voltage.  Working InGaAs APD's were actually fabricated              with vapor phase epitaxy (VPE).  Computer techniques were developed to          model the electric field behavior of these devices (with Prof. S.R.             Forrest of the USC). Phase II work includes optimization of the                 "floating" guard-ring structure, possibly incorporating a new "slab"            structure into the original Phase I device.  VPE will be refined to             yield lower background and finer control of n-doping.  We will deliver          ten devices which are easy to fabricate, have gains beyond 10, operate          at 2 GHz and have sensitivities below -40 dbm.
[{'FirstName': 'Stephen', 'LastName': 'Forrest', 'PI_MID_INIT': 'R', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Stephen R Forrest', 'EmailAddress': 'stevefor@umich.edu', 'NSF_ID': '000444384', 'StartDate': '04/15/1989', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}, {'FirstName': 'Gregory', 'LastName': 'Olsen', 'PI_MID_INIT': 'H', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Gregory H Olsen', 'EmailAddress': 'ghosensors@aol.com', 'NSF_ID': '000199534', 'StartDate': '04/15/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}, {'FirstName': 'Vladimir', 'LastName': 'Ban', 'PI_MID_INIT': 'S', 'PI_SUFX_NAME': None, 'PI_FULL_NAME': 'Vladimir S Ban', 'EmailAddress': 'uri.abrams@pd-ld.com', 'NSF_ID': '000225371', 'StartDate': '04/15/1989', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}]
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{'Code': '5373', 'Text': 'SBIR Phase II'}
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