Anthony Woonchiu Yu

US Patent:

7002733, Feb 21, 2006

Filed:

Jan 30, 2003

Appl. No.:

10/353984

Inventors:

Mario Dagenais - Chevy Chase MD, US
Stewart W Wilson - Silver Spring MD, US
Anthony W. Yu - Spencerville MD, US
Peter J. S. Heim - Washington DC, US

Assignee:

Quantum Photonics, Inc. - Jessup MD

International Classification:

H04B 10/12
H01S 3/00

US Classification:

359337, 359344

Abstract:

An optical amplification device includes a depolarizer for reducing the polarization sensitivity requirements on an SOA by changing the input to the SOA from having an arbitrary (unknown) polarization state to a known (depolarized) state. The depolarizer receives an input optical signal and outputs a depolarized, optical signal, and a semiconductor optical amplifier (SOA) receives the depolarized optical signal and outputs an amplified optical signal.

US Patent:

7050222, May 23, 2006

Filed:

May 24, 2004

Appl. No.:

10/851179

Inventors:

Anthony W. Yu - Spencerville MD, US
Stewart W. Wilson - Billerica MA, US
Dennis Bowler - Sudbury MA, US
Peter J. S. Heim - Washington DC, US
Scott A. Merritt - McLean VA, US

Assignee:

Covega, Inc. - Jessup MD

International Classification:

H10S 3/00
H01L 29/22

US Classification:

359344, 257 98

Abstract:

High power, low degree of polarization superluminescent diodes (SLDS) are described. A semiconductor optical amplifier (SOA) which amplifies light in substantially one polarizaton state can be used to create a SLD by combining the output from both sides of this polarization sensitive SOA in a manner which results in a depolarized output.

US Patent:

20030155486, Aug 21, 2003

Filed:

Aug 1, 2002

Appl. No.:

10/208744

Inventors:

Frankie Rogers - Gaithersburg MD, US
Anthony Yu - Spencerville MD, US
James Cho - Columbia MD, US
Stewart Wilson - Silver Spring MD, US

Assignee:

QUANTUM PHOTONICS

International Classification:

H01J003/14

US Classification:

250/216000, 372/092000

Abstract:

An optical alignment device is provided comprising a base portion extending the length of the alignment device, a substantially horizontal package mounting portion coupled to the base portion, and a component retaining portion coupled to the base portion.

US Patent:

20190067895, Feb 28, 2019

Filed:

Aug 31, 2017

Appl. No.:

15/691904

Inventors:

- Washington DC, US
ANTHONY W. YU - Spencerville MD, US
JEFFREY W. NICHOLSON - Warren NJ, US

International Classification:

H01S 3/067
G02B 6/024
H01S 3/16
G02B 6/02
H01S 3/23
H01S 3/094
H01S 3/0941

Abstract:

The disclosed subject matter relates to a polarization-maintaining very large mode area (PM VLMA) Erbium-doped fiber and a polarization maintaining, Er-doped VLMA amplifier.

US Patent:

20170088944, Mar 30, 2017

Filed:

Sep 24, 2015

Appl. No.:

14/864442

Inventors:

- Washington DC, US
Mary J. Li - Bethesda MD, US
Anthony W. Yu - Spencerville MD, US

International Classification:

C23C 16/26
C23F 1/00
C01B 31/04

Abstract:

The present invention relates to a method of manufacturing large area graphene for graphene-based photonics devices such as bolometric graphene detectors, or for use as a saturable absorber in ultra-high bandwidth detectors for producing ultrafast laser pulses. The method includes: growing a first graphene layer on one side of a metal substrate, and a second graphene layer on another side of the metal substrate; coating the first graphene layer with a plurality of resist layers including a low molecular weight polymethylmethacrylate, and a high molecular weight polymethylmethacrylate; removing the second graphene layer and the metal substrate to reveal the first graphene layer; disposing the first graphene layer on an optical substrate; and removing the plurality of resist layers from the first graphene layer to reveal a final graphene layer, which can be used as the basis to manufacture a multilayer graphene structure for graphene detectors.

Author:

Anthony C. Yu

ISBN #:

0812695526

Author:

Anthony C Yu

ISBN #:

0226971554

Author:

Anthony C Yu

ISBN #:

0226971562

Author:

Anthony C Yu

ISBN #:

0691015619

Author:

Anthony C Yu

ISBN #:

0691090130

Author:

Anthony C Yu

ISBN #:

0804732302

Author:

Anthony C Yu

ISBN #:

0804732310

Author:

Anthony C Yu

ISBN #:

0838901328

Address:

16119 Drayton Farm Dr, Spencerville, MD 20868

Phone:

3014219291

VIN:

JTEEW21A770045112

Make:

TOYOTA

Model:

HIGHLANDER HYBRID

Year:

2007