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Phil A Willems

from South Pasadena, CA
Age ~58
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Also known as:
Phillip A Willems, Phil A Williams, Phil Williems, Phillip Williems
Related to:
William S Simms
Connected to:
Adam J Willemssen, 41Andrew G Willems, 39Anita Willemse, 66Blake A Willemsen, 59Bonnie L Willemsen, 97Daniel C Willemse, 40Diana L Willemsen, 69Dianne L Willems, 62Eugene T Willems, 90Jaime M Willems, 27

Phil Willems Phones & Addresses

  • South Pasadena, CA
  • Pasadena, CA

Resumes

Resumes

Phil Willems Photo 1

Optical Engineer

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Location:
South Pasadena, CA
Industry:
Biotechnology
Work:
Nasa Jet Propulsion Laboratory
Optical Engineer
Education:
Caltech 1988 - 1997
Doctorates, Doctor of Philosophy, Physics, Philosophy University of Wisconsin - Madison 1984 - 1988
Bachelors, Bachelor of Science, Physics
Skills:
Matlab
Nanotechnology
Simulations
Physics
Sensors
Optics
Project Management
Biotechnology
Lifesciences
Mathematical Modeling
Experimentation
Product Management
C++
R&D
C
Signal Processing
Phil Willems Photo 2

Phil Willems

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Location:
1233 Orange Grove Ave, South Pasadena, CA 91030
Industry:
Research
Work:
California Institute of Technology
Chief Executive Officer
Phil Willems Photo 3

Phil Willems

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Business Records

Name / Title
Company / Classification
Phones & Addresses
Phil Anthony Willems
President
Epetri Inc
Nonclassifiable Establishments
1785 Locust St, Pasadena, CA 91106
17352 W Sunset Blvd, Pacific Palisades, CA 90272
(626) 356-7456

Publications

Us Patents

Methods Of Fabricating Grating Assisted Coupler Devices

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US Patent:
6465153, Oct 15, 2002
Filed:
Oct 31, 2000
Appl. No.:
09/699403
Inventors:
Anthony S. Kewitsch - Hacienda Heights CA
George A. Rakuljic - Santa Monica CA
Doruk Engin - Santa Monica CA
Seth J. Greenberg - Los Angeles CA
Phil A. Willems - Pasadena CA
Xiaolin Tong - Pasadena CA
Assignee:
Arroyo Optics, Inc. - Santa Monica CA
International Classification:
G03C 5003
US Classification:
430290, 430 30, 430321
Abstract:
Advantageous methodologies are disclosed for embedding periodic patterns in optical waveguide elements such as optical fibers. Polarization independence in an elongated waist region of a coupler can be established by measuring polarization characteristics during fusion and elongation, and controlling the heating and stretching to impart a cross-sectional shape, such as a hybrid dumbbell-ellipsoid produces a polarization insensitive drop wavelength. Alternatively, or additionally, polarization dependence can be minimized by angular deformation of the elements along its light transmissive axis. In addition, an element of relatively low photosensitivity is held in an hydrogen or deuterium environment pressurized to about 1000 to 5000 psi. While the environment is pressurized, a scanning UV beam is transmitted through a photomask and impinges on the coupler waist. In writing the grating, the in-diffused gas is constantly replenished, enabling the grating to grow.

Grating Assisted Coupler Devices

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US Patent:
6578388, Jun 17, 2003
Filed:
Nov 27, 2000
Appl. No.:
09/721699
Inventors:
Anthony S. Kewitsch - Hacienda Heights CA
George A. Rakuljic - Santa Monica CA
Phil A. Willems - Pasadena CA
Xiaolin Tong - Pasadena CA
Assignee:
Arroyo Optics Inc. - Santa Monica CA
International Classification:
C03B 3715
US Classification:
65406, 65378, 65392, 65403, 65408, 65411, 385 9, 385 10, 385 37, 385 95, 385 96, 264 125
Abstract:
An add/drop filter for optical wave energy incorporates a Bragg grating in a very narrow waist region defined by merged lengths of elongated optical fibers. Light is propagated into the waist region via adiabatically tapered fibers and is transformed from two longitudinally adjacent fibers into two orthogonal modes within the air-glass waveguide of the waist and reflected off the grating from one fiber into the other. The geometry of the waist region is such that the reflected drop wavelength is polarization independent, without lossy peaks in the wavelength band of interest. Additionally, back reflection are shifted out of the wavelength band of interest. High strength gratings are written by photosensitizing the waist region fibers by constantly in-diffusing pressurized hydrogen or deuterium. For narrow spectral bandwidth gratings, dimensional variations must be minimized or compensated, and the grating is apodized by both a. c. and d. c. variations in writing beams at a net constant power.

Grating Assisted Coupler Devices

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US Patent:
6236782, May 22, 2001
Filed:
Aug 4, 1998
Appl. No.:
9/128477
Inventors:
Anthony S. Kewitsch - Hacienda Heights CA
George A. Rakuljic - Santa Monica CA
Phil A. Willems - Pasadena CA
Xiaolin Tong - Pasadena CA
Assignee:
Arroyo Optics, Inc. - Santa Monica CA
International Classification:
G02B 626
US Classification:
385 43
Abstract:
An add/drop filter for optical wave energy incorporates a Bragg grating in a very narrow waist region defined by merged lengths of elongated optical fibers. Light is propagated into the waist region via adiabatically tapered fibers and is transformed from two longitudinally adjacent fibers into two orthogonal modes within the air-glass waveguide of the waist and reflected off the grating from one fiber into the other. The geometry of the waist region is such that the reflected drop wavelength is polarization independent, without lossy peaks in the wavelength band of interest. Additionally, back reflection are shifted out of the wavelength band of interest. High strength gratings are written by photosensitizing the waist region fibers by constantly in-diffusing pressurized hydrogen or deuterium. For narrow spectral bandwidth gratings, dimensional variations must be minimized or compensated, and the grating is apodized by both a. c. and d. c. variations in writing beams at a net constant power.
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Phil A Willems from South Pasadena, CA, age ~58 Get Report