JAMES KENT TATUM, M.D.
Radiology at 15 St, Plano, TX
License number
Texas A104505
Category
Medical Practice
Type
Neurological Surgery
License number
Texas A104505
Category
Radiology
Type
Diagnostic Neuroimaging
License number
Texas A104505
Category
Radiology
Type
Neuroradiology
License number
Texas M2147
Category
Radiology
Type
Diagnostic Radiology
License number
Texas A104505
Category
Radiology
Type
Diagnostic Radiology
License number
Texas M2147
Category
Radiology
Type
Therapeutic Radiology
License number
Texas M2147
Category
Radiology
Type
Vascular & Interventional Radiology
License number
Texas A104505
Category
Radiology
Type
Vascular & Interventional Radiology
License number
Texas 28219
Category
Radiology
Type
Vascular & Interventional Radiology
Address
Address
3901 W 15Th St SUITE 2A, Plano, TX 75075
Phone
(972) 596-6800
(972) 867-7862
(972) 867-7862
Professional information
Power And Encircled Flux Alignment
US Patent:
7295733, Nov 13, 2007
Filed:
Jun 21, 2005
Appl. No.:
11/157564
Inventors:
James Tatum - Plano TX, US
James Guenter - Garland TX, US
Jack Gilkerson - Wylie TX, US
James Guenter - Garland TX, US
Jack Gilkerson - Wylie TX, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02B 6/26, G02B 6/36
US Classification:
385 52, 385 88
Abstract:
A system and method for aligning optical components based on coupled optical power and encircled flux is described. In one embodiment of the invention, coupled power and encircled flux is measured corresponding to multiple locations of a first optical component relative to a second optical element. The measured coupled power and encircled flux values are analyzed and an appropriate location of the first optical component relative to the second optical component is selected.
Single Mode Vcsel
US Patent:
6965626, Nov 15, 2005
Filed:
Sep 3, 2002
Appl. No.:
10/232382
Inventors:
James A. Tatum - Plano TX, US
James K Guenter - Garland TX, US
Ralph H. Johnson - Murphy TX, US
James K Guenter - Garland TX, US
Ralph H. Johnson - Murphy TX, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
H01S003/097, H01S005/00
US Classification:
372 87, 372 43, 372 44, 372 45, 372 46
Abstract:
A VCSEL having a metallic heat spreading layer adjacent a semiconductor buffer layer containing an insulating structure. The heat spreading layer includes an opening that enables light emitted by an active region to reflect from a distributed Bragg reflector (DBR) top mirror located above the heat spreading layer. A substrate is below the active region. A lower contact provides electrical current to that substrate. The lower contact includes an opening that enables light emitted from the active region to reflect from a distributed Bragg reflector (DBR) lower mirror. Beneficially, the substrate includes a slot that enables light to pass through an opening in the lower contact. That slot acts as an alignment structure that enables optical alignment of an external feature to the VCSEL.