John Colburn Diehl, 62212 Garden View Way, Rockville, MD 20850

8224188, Jul 17, 2012

Jan 15, 2010

12/688062

Preetpaul S Devgan - Laurel MD, US
Vincent J Urick - Alexandria VA, US
Keith J Williams - Dunkirk MD, US
John F. Diehl - Bowie MD, US
Christopher E. Sunderman - Rockville MD, US

The United States of America, as represented by the Secretary of the Navy - Washington DC

H04B 10/00

398159, 398147, 398148

A method and system for processing analog optical signals to produce a single RF output free from even-order harmonic distortion. Two analog optical signals of different wavelengths λ are input into a dual-output Mach-Zehnder modulator (MZM), where one wavelength input is high-biased and one wavelength is low-biased. The complementary high- and low-biased wavelengths are output from each arm of the MZM to a multiplexer, which filters out the unwanted high- or low-biased wavelengths from each MZM arm so that both wavelengths are low-biased or high-biased. The signals are passed to a pair of photodiodes, and the photocurrents from the photodiodes are differenced to produce the final RF output. Because of the complementary phase differences between the two low- or high-biased signals generating the photocurrent, all components of the photocurrent except the fundamental and odd-order harmonics cancel each other, resulting in a high-quality RF output free from harmonic distortion.

D243945, Apr 5, 1977

May 29, 1975

5/581868

John A. Diehl - Arlington VA

D1503

D15 28

4046184, Sep 6, 1977

Jun 27, 1975

5/591077

John A. Diehl - Arlington VA

B60B 2506

152407

A relatively simple and highly efficient safety system for retaining the tires, which are mounted on the front wheels of heavy, over-the-road vehicle such as trucks, buses and the like, in the event of gradual or sudden deflation of the tires. Such tires are locked onto rims of the two or three-piece types, mounted on disc or spoked wheels. The important and essential features of the present invention reside in the provision of a radially - extending locking lug detachably mounted on and rigidly secured to a spoke of the wheel or in the ventilating holes in disc wheels and which terminates at its outer end in a position to contact the outer flange of a two-piece rim installation, or in the case of a three-piece rim installation, to contact the outer flange and to overlie the radially-split locking ring. Thus the tire and flange are prevented from becoming detached from the rim in two-piece rim constructions, and the flange, tire and locking ring are prevented from becoming detached from the rim upon deflation of the tires mounted on three piece rims. An embodiment of the present invention also prevents circumferential movement of the rim constructions and the tires mounted thereon.

D244191, May 3, 1977

May 29, 1975

5/581781

John A. Diehl - Arlington VA

D1503

D15 28

2021031, Oct 14, 2021

Jan 29, 2021

17/162220

- Patuxent River MD, US
John Diehl - Clinton MD, US
Jason McKinney - Bowie MD, US

G02B 6/02

A multicore fiber optic cable comprising of a dual core optical fiber having a dual core optical fiber geometry, the cores are spiraled parallel to one another along the longitudinal axis of the fiber to negate link path length difference, a coating that surrounds the fiber, a buffer tube that surrounds the coated fiber, a strength member that surrounds the buffer tube, and an outer jacket that surrounds the strength member.

2016024, Aug 25, 2016

Feb 18, 2016

15/046537

- Washington DC, US
Vincent J. Urick - Alexandria VA, US
John F. Diehl - Bowie MD, US
Keith J. Williams - Dunkirk MD, US

H04B 10/11
H04B 10/60

Systems and method are provided to for suppressing interference signals in optical systems, without prior knowledge of the type of location of the interferers, while maintaining a linear response to small signals of interest (SOI). By exploiting the unique power (or voltage) dependent transmission function of an externally angle-modulated photonic link, embodiments of the present disclosure are configured to provide strong, wideband interference suppression without requiring detailed knowledge of the interfering signal.