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Donald Glen Heflinger

from Torrance, CA
Age ~68
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Also known as:
Donald G Heflinger, Don G Heflinger
Phone and address:
5618 Ruby St, Torrance, CA 90503
(310) 540-5182
Related to:
Lauree Diane Oden, 69Margaret T Heflinger, 67Thomas G Heflinger, 31
Connected to:
Andrew E Hefling, 44James E Heflybower, 74Mohamed E Hefnawy, 61Amy A Hefner, 48Ashley A Hefner, 34Carl W Hefner, 36Cynthia L Hefner, 67Darla J Hefner, 60Emily R Hefner, 40Harley R Hefner, 53

Donald Heflinger Phones & Addresses

  • 5618 Ruby St, Torrance, CA 90503 (310) 540-5182
  • Bishop, CA
  • Redondo Beach, CA
  • Placentia, CA
  • 5618 Ruby St, Torrance, CA 90503 (760) 863-0265

Work

Company: The aerospace corporation 1980 to 1996 Position: Mts

Education

Degree: Associate degree or higher

Emails

h***[email protected]

Industries

Defense & Space

Resumes

Resumes

Donald Heflinger Photo 1

Optical Engineer

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Location:
Torrance, CA
Industry:
Defense & Space
Work:
The Aerospace Corporation 1980 - 1996
Mts
Northrop Grumman Corporation 1980 - 1996
Optical Engineer

Publications

Us Patents

Pseudomonolithic Wafer Scale Module

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US Patent:
6353264, Mar 5, 2002
Filed:
Jul 18, 2000
Appl. No.:
09/618771
Inventors:
Ramon Coronel - Torrance CA
Karen A. Fucik - Redondo Beach CA
Peter S. Yoon - Torrance CA
Richard B. Sherwood - Palos Verdes Estates CA
Donald G. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H01L 2348
US Classification:
257777, 257432, 257686, 385 92, 385 49
Abstract:
A wafer-scale module includes a plurality of stacked wafers, each having a thin semiconductor layer disposed on a surface of the wafer, a plurality of wafer-scale integrated (WSI) circuits formed on the semiconductor layer and a plurality of nodes formed on the semiconductor layer. Each node provides an optoelectronic interface to an axial optical waveguide for high-speed optical interconnectivity between the WSI circuits and other integrated wafer circuit devices of the stack. A top plate is included and is disposed on the plurality of stacked wafer devices. A base plate, included for purposes of thermal dissipation, is disposed opposite the top plate such that the plurality of stacked wafers are sandwiched between the top plate and the base plate and all are assembled.

High Average Power Fiber Laser System With High-Speed, Parallel Wavefront Sensor

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US Patent:
6366356, Apr 2, 2002
Filed:
Apr 1, 1999
Appl. No.:
09/282579
Inventors:
Stephen J. Brosnan - San Pedro CA
Donald G. Heflinger - Torrance CA
Lee O. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
G01B 902
US Classification:
356477, 356484, 372 6
Abstract:
A high average power fiber-laser system comprises a master oscillator for generating a primary laser signal; a beam splitter array for splitting the primary laser signal into N secondary laser signals; an optical frequency shifter for shifting the frequency of the primary laser signal; a phase modulator array for providing phase compensation of the N secondary laser signals; N single-mode dual clad fiber amplifiers for amplifying the N secondary laser signals and generating an output beam; a beam sampler for sampling the wavefront of the output beam, defining an array of sampled signals; means responsive to the array of sampled signals for interferometrically combining the array of said sampled signals and the shifted primary laser signal into an array of heterodyne optical signals, each having a phase that corresponds to the state of phase of the array of sampled signals; and means responsive to the array of heterodyne optical signals for providing a plurality of feedback signals to the phase modulator array that are linearly proportioned to the state of phase over at least one wave to provide phase compensation of the secondary laser signals. This includes digital dividers for dividing electrical signals by a selected integer and an exclusive OR gate for providing a pulse train having a duty cycle that reflects the phase to be compensated.

Apparatus And Method For Tuning An Optical Interferometer

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US Patent:
6396605, May 28, 2002
Filed:
Jan 26, 1999
Appl. No.:
09/236981
Inventors:
Donald G. Heflinger - Torrance CA
Jeffrey S. Bauch - Redondo Beach CA
Todd E. Humes - Thousand Oaks CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H04B 1000
US Classification:
359154, 359173, 359161
Abstract:
An apparatus using an optical signal for actively tuning an optical interferometer without introducing any dither in its optical path length. The apparatus comprises a dither generator, means applying a portion of the dithering signal to the optical signal so as to provide an optical signal having a varying wavelength, an optical interferometer having a path length that is tunable and that responds to the optical signal having a varying wavelength and a path length adjustment drive signal and develops a first interference pattern when said path length is a prescribed value and a second interference pattern when the optical path length is changed, photodetector means responsive to the optical interference pattern and operative to develop an electronic feedback signal when the first interference pattern is not present, and a synchronous detection lock-in amplifier that is responsive to a portion of the dithering signal and the electronic feedback signal and operative to produce the optical path length adjustment drive signal. The drive signal changes the optical path length until it reaches the prescribed value, thereby producing the first interference pattern and tuning the optical interferometer. also a method of using an optical signal for tuning an optical interferometer by adjusting its optical path length without introducing dither into the path length is invented.

Fully Optical Analog To Digital Converters With Complementary Outputs

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US Patent:
6404365, Jun 11, 2002
Filed:
Aug 1, 2000
Appl. No.:
09/630418
Inventors:
Donald Glen Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H03M 100
US Classification:
341137, 359245
Abstract:
A fully optical converter for converting an analog signal into a digital signal includes an amplitude to optical wavelength converter for converting the analog signal into an optical signal which varies in wavelength in accordance with an amplitude of the analog signal, a splitter for applying the optical signal over a desired number of light paths, an interferometer connected to each of the light paths, unequal path lengths in each leg of the interferometers to allow optical interference to deliver a complementary sinusoidal transfer function to the optical signal to generate two complimentary output signals and a dual detector connected to each of the interferometers for generating a digital bit in response to the two complimentary output signals, wherein each of the digital bits together form a parallel digital word. The fully optically based converter is automatic and independent of interactive techniques, thus providing for an expedited conversion rate.

Optical Communication System With A Single Polarized, Phase Modulated Transmitted Beam

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US Patent:
6441938, Aug 27, 2002
Filed:
Apr 1, 1999
Appl. No.:
09/283053
Inventors:
Donald G. Heflinger - Torrance CA
Lee O. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H04B 1000
US Classification:
359156, 359173, 359183, 359191, 359192
Abstract:
An optical communication system, using a radio frequency (RF) signal for communicating an analog communication signal, includes an optical transmitter and an optical receiver. The optical transmitter generates a reference light beam, generates a phase modulated communication light beam by phase modulating the reference light beam with the analog communication signal, polarizes a portion of the reference light beam and combines the polarized reference light beam and the phase modulated communication light beam. The optical receiver separates the reference light beam and the communication light beam, develops a shifted light beam that is shifted in frequency by the RF frequency, interferometrically combines the communication light beam with the shifted light beam to provide a heterodyne signal including information regarding the state of phase of the communication light beam, uses the heterodyne signal to produce an electrical signal at an optical beat frequency corresponding to the RF and with a phase corresponding to the state of phase of the communication light beam, and derives from the RF signal and the heterodyne signal an output signal that has a linear correspondence to the state of optical phase of the communication light beam and the analog communication signal.

Apparatus And Method Employing Two Optical Signals For Stabilizing An Optical Interferometer

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US Patent:
6469817, Oct 22, 2002
Filed:
Jun 18, 1999
Appl. No.:
09/336248
Inventors:
Donald G. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H04B 1000
US Classification:
359189, 359154, 359161
Abstract:
An apparatus and a method for stabilizing an optical interferometer using two optical signals that differ in wavelength by a factor of two is disclosed. The optical interferometer has an optical path length that is tunable. It develops a first interference pattern when the original optical signal is present and the optical path length is a prescribed value. When a second optical signal that has a wavelength that is twice or one-half of the original is dithered and a path length adjustment drive signal is present the interferometer develops a second interference pattern when the optical path length is the prescribed value. An optoelectronic detector is responsive to the second optical interference pattern and develops an electronic feedback signal when the second interference pattern is not present. Accordingly, a feedback circuit produces the optical path length adjustment drive signal, which serves to change the optical path length until it reaches the prescribed value to restore both the second interference pattern and the first interference pattern, thereby tuning the optical interferometer.

Linear Analog Optical Communication System With Two Transmitted Beams And Phase Modulation

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US Patent:
6490068, Dec 3, 2002
Filed:
Apr 1, 1999
Appl. No.:
09/285207
Inventors:
Donald G. Heflinger - Torrance CA
Lee O. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H04B 1000
US Classification:
359154, 359192, 359156
Abstract:
An optical communication system uses a radio frequency (RF) signal for communicating an analog communication signal. It comprises an optical transmitter and receiver. The optical transmitter comprises means for generating a first reference light beam, and means responsive to the analog communication signal to produce a communication light beam having phase modulation corresponding to the analog communication signal. The optical receiver comprises first means responsive to the reference light beam and the RF signal to develop a shifted light beam that is shifted in frequency by the RF frequency, second means to interferometrically combine the communication light beam with the shifted light beam to provide a heterodyne signal including information regarding the state of phase of the communication light beam, third means responsive to said heterodyne signal to produce an electrical signal at the optical beat frequency corresponding to the RF and with a phase corresponding to the state of phase of the communication light beam, and fourth means responsive to the RF signal and the electrical signals to provide an output signal that has a linear correspondence to the state of optical phase of the communication light beam and the analog communication signal. The optical transmitter and optical receiver are also invented.

Broadcast Optical Communication System Employing Waveguide Having Grating Normal To Sources And Detectors

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US Patent:
6512618, Jan 28, 2003
Filed:
Jun 18, 1999
Appl. No.:
09/336019
Inventors:
Donald G. Heflinger - Torrance CA
Assignee:
TRW Inc. - Redondo Beach CA
International Classification:
H04J 1402
US Classification:
359173, 359127, 359130, 257777, 385 24, 385 37
Abstract:
A broadcast optical communication system is disclosed. It comprises an optical waveguide having a plurality of gratings. A first grating is disposed at a first node and couples light impinging normally into the waveguide, propagates coupled light bi-directionally through the waveguide and emits a portion of the coupled light at a second grating in a direction normal thereto. An optical source is disposed proximate the first node for transmitting light normally to the first grating and an optical detector is disposed proximate the second node for detecting the normally emitted light. In another embodiment multiple optical waveguides and source-detector pairs are employed in a parallel data architecture to provide multiple channel broadcast communication.
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Donald Glen Heflinger from Torrance, CA, age ~68 Get Report