John R Feth, 76Benicia, CA

8373863, Feb 12, 2013

Jan 28, 2010

12/695291

John Feth - Phoenix AZ, US

Honeywell International Inc. - Morristown NJ

G01C 19/72

356460

Methods and systems for improved fiber optic gyroscopes for operation in non-atmospheric environments are provided. In one embodiment, an integrated optical circuit for an interferometer subject to non-atmospheric conditions comprises: a first section of waveguide within a Lithium crystalline structure that is exposed to an electrical field, the first section of waveguide being a Titanium-diffused waveguide region; a second section of waveguide within the Lithium crystalline structure that is not within the first section of the waveguide, the second section of waveguide being a proton-exchange waveguide region; a stitch coupling the first section of waveguide to the second section of waveguide; and a third section of waveguide configured to combine reciprocal light beams to produce an interference pattern, wherein at least one of the reciprocal light beams pass through the first section of waveguide and the second section of waveguide prior to producing the interference pattern.

8446590, May 21, 2013

Jun 1, 2011

13/150990

Glen A. Sanders - Scottsdale AZ, US
John Feth - Phoenix AZ, US
Lee K. Strandjord - Tonka Bay MN, US
Tiequn Qiu - Glendale AZ, US

Honeywell International Inc. - Morristown NJ

G01C 19/72

356461

An optical-fiber filter is provided. The optical-fiber filter includes an optical fiber having a first end-face and an opposing second end-face. The first end-face and the second end-face set a fiber length. The first end-face and the second end-face are coated with reflective coatings. When an optical beam emitted from a laser is coupled into one of the first end-face or the second end-face, an optical beam output from the opposing end-face has a narrow linewidth and low frequency noise fluctuations.

2009021, Sep 3, 2009

Feb 29, 2008

12/040866

John Feth - Phoenix AZ, US

Honeywell International Inc. - Morristown NJ

G01C 19/72

356460, 356461

An integrated optical circuit includes a first waveguide portion of a first material. The first waveguide portion includes an input-port section terminating in a junction section from which first and second branch sections are formed. Second and third waveguide portions are respectively coupled to the first and second branch sections. The second and third waveguide portions are diffused with a second material different from the first material. First and second modulators are respectively coupled to the second and third waveguide portions. Each of the modulators provides respective modulating voltages generating respective electric fields. The second and third waveguide portions are coupled to the first and second branch sections at respective locations where the electric fields are substantially zero.

2013007, Mar 21, 2013

Sep 21, 2011

13/239145

John Feth - Phoenix AZ, US

HONEYWELL INTERNATIONAL INC. - Morristown NJ

G01C 19/72
G02B 6/26

356461, 385 50

Systems and methods for a hollow core resonant filter are provided. In one embodiment, a hollow-core fiber resonant cavity comprises: a hollow-core fiber having a first and second ends; a first and a second pigtail fiber each of solid core fiber material. A tip of the first pigtail is optically aligned with the first-end to couple light from the first pigtail to the hollow core fiber across a first free-space gap. A tip of the second pigtail is optically aligned with the second-end to couple light from the second pigtail to the hollow-core fiber across a second free-space gap. The tip of the second pigtail is coated to reflect light received from the second-end back across the second free-space gap into the second-end. The tip of the first pigtail is coated to reflect light received from the first-end back across the first free-space gap into the first-end.

5559908, Sep 24, 1996

Jun 6, 1995

8/468783

Richard J. August - Scottsdale AZ
Kevin B. Dimond - Phoenix AZ
John R. Feth - Phoenix AZ
Clarence E. Laskoskie - Scottsdale AZ
Lee K. Strandjord - Glendale AZ
Bogdan Szafraniec - Cave Creek AZ

Honeywell Inc. - Minneapolis MN

G02B 600
G01B 902

385 12

A method for damping an optical fiber on a bias optical phase modulator having two optical fiber leads comprises the steps of securing the bias phase modulator, applying a silicone or acrylate type of substance to an outward facing surface of the fiber wound on the bias phase modulator means, applying the silicone or acrylate type of substance on the two optical fiber leads for at least 0. 5 inch (1. 28 cm. ) along each lead which is apart from the place where the optical fiber wound on the bias phase modulator, frequently brushing or smoothing out the applied silicone or acrylate type of substance until the substance beings to set, and drying the substance on the optical fiber until the substance is cured. The applied damping material significantly reduces an amplitude of a frequency caused by mechanical vibrations in a rotation sensor.

5881185, Mar 9, 1999

Aug 19, 1996

8/697050

John R. Feth - Phoenix AZ
Joseph F. Straceski - Phoenix AZ
Isaac R. Jessop - Monmouth OR

Honeywell Inc. - Minneapolis MN

G02B 600

385 11

Aligned birefringent fiber segments are reliably and efficiently rotated approximately 45. degree. relative to each other until the extinction ratio measurement at the output is approximately 0 dB, then birefringent fibers are fused. To determine the extinction ratio, a Wollaston analyzer is placed at the output of the birefringent fiber. Photodetectors placed on each output of the Wollaston analyzer, substantially simultaneously measure the output intensity of each propagation axis.

5457532, Oct 10, 1995

May 31, 1994

8/250970

Richard J. August - Scottsdale AZ
Kevin B. Dimond - Phoenix AZ
John R. Feth - Phoenix AZ
Clarence E. Laskoskie - Scottsdale AZ
Lee K. Strandjord - Glendale AZ
Bogdan Szafraniec - Cave Creek AZ

Honeywell Inc. - Minneapolis MN

G01C 1972

356350

A rotation sensor for sensing rotation, particularly about an axis of a coiled optical fiber, wherein the coiled optical fiber has with light waves propagating in opposite directions in the coiled optical fiber, the phase relationship of the counter-propagating light waves providing a basis for indicating rotation of the sensor. A portion of the coiled optical fiber is a part of and affected by a bias optical phase modulator which causes a varying phase relationship between the light waves at a fundamental frequency. However, the varying phase relation ship has at least one harmonic which is due to mechanical vibration of the optical fiber that is a part of the modulator. This harmonic contributes to an erroneous indication of rotation. The amplitude of such harmonic is reduced by lowering the Q of the resonating fiber. This is effected by applying a damping material to the optical fiber and a portion of the modulator.

6139196, Oct 31, 2000

Nov 9, 1998

9/189380

John R. Feth - Phoenix AZ
Richard L. Niemeyer - Peoria AZ

Honeywell, Inc. - Morristown NJ

G02B 6255

385 97

A method of preparing an optical fiber for fusion splicing comprising the steps of providing an optical fiber having a fiber jacket and an end, removing a predetermined bulk of the fiber jacket from an area adjacent the end while one of substantially simultaneously moving gas over the area and exhausting gas from the area.