Michael Patrick Parker
Engineering in Liverpool, NY
License number
Massachusetts 52879
Issued Date
Nov 2, 2016
Expiration Date
Jun 30, 2018
Type
Civil Engineer
Address
Address
Liverpool, NY 13090
Professional information
Demodulating And Amplifying Systems Of Lasers With Optical Gain Control (Das-Logic)
US Patent:
6331990, Dec 18, 2001
Filed:
Feb 1, 1999
Appl. No.:
9/240830
Inventors:
Michael A. Parker - Liverpool NY
Douglas B. Shire - Ithaca NY
Chung L. Tang - Ithaca NY
Douglas B. Shire - Ithaca NY
Chung L. Tang - Ithaca NY
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
Force - Washington DC
International Classification:
H01S 330
US Classification:
372 8
Abstract:
The present invention demodulates a FM, WM or AM optical input beam, amplifies the signal impressed on the beam, and then modulates without intervening electronics the signal amplitude of an output beam. The apparatus can be made from any semiconductor laser, including edge-emitting lasers and VCSELs. Light transmitted through the waveguide (the "control beam") interacts with the carrier population of the laser, reducing the available gain and thereby the output intensity. The present invention has three key advantages: (i) a FM control beam produces an amplitude-modulated output beam from the main-laser, (ii) the amplitude of the AM beam depends directly on the differential gain. differential. G/. differential. omega. , and (iii) the apparatus and method provides gain for all LOGiC devices.
Optical Laser Amplifier Combined With A Spontaneous Emission Filter
US Patent:
5604628, Feb 18, 1997
Filed:
Dec 30, 1994
Appl. No.:
8/366218
Inventors:
Michael A. Parker - Liverpool NY
Paul D. Swanson - Solana Beach CA
Stuart I. Libby - Albuquerque NM
Douglas B. Shire - Ithaca NY
Chung C. Tang - Ithaca NY
Paul D. Swanson - Solana Beach CA
Stuart I. Libby - Albuquerque NM
Douglas B. Shire - Ithaca NY
Chung C. Tang - Ithaca NY
Assignee:
Cornell Research Foundation, Inc. - Ithaca NY
International Classification:
H01S 300, G02F 300
US Classification:
359344
Abstract:
Optical laser amplifier devices are formed integrally with spontaneous emission filters. The filtering function is accomplished by a laser amplifier whose output is employed to quench the signal generated by a laser. The quenching of the laser is performed in direct proportion to the stimulated emission component of the laser amplifier output signal. Since the stimulated emission component represents the output signal minus any spontaneous emission noise, the output signal generated by the laser is an amplified, inverted version of the input signal without the noise components. In the preferred embodiments, optical waveguides are employed to form the laser amplifier and the laser is either a horizontal cavity edge emitting laser or a vertical cavity surface emitting laser (VCSEL).
Vertical Cavity Surface Emitting Lasers With Optical Gain Control (V-Logic)
US Patent:
5748653, May 5, 1998
Filed:
Mar 18, 1996
Appl. No.:
8/616979
Inventors:
Michael A. Parker - Liverpool NY
Richard J. Michalak - Manlius NY
James S. Kimmet - Rome NY
Douglas B. Shire - Ithaca NY
Paul D. Swanson - Santee CA
Chung L. Tang - Ithaca NY
Richard J. Michalak - Manlius NY
James S. Kimmet - Rome NY
Douglas B. Shire - Ithaca NY
Paul D. Swanson - Santee CA
Chung L. Tang - Ithaca NY
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
Force - Washington DC
International Classification:
H01S 310
US Classification:
372 8
Abstract:
The Vertical-cavity-surface-emitting Lasers with Optical Gain Control (V-LOGIC) form a family of integrated optical smart pixels for interconnect and signal processing applications. V-LOGIC devices consist of Vertical Cavity Surface Emitting Lasers (VCSELs) and In-Plane Lasers. (IPL) with cross-coupled cavities. The devices can operate in a digital, an analog or a hybrid mode. The IPLs either fully quench or modulate the VCSEL depending on whether the device is used in the digital or analog mode. In the Hybrid mode, one IPL serves as an enable input while another one modulates the VCSEL. The V-LOGIC devices can operate significantly faster than modulated lasers since, for the quenching phenomena, (1) the VCSEL carrier population is essentially constant and (2) the quenching is all-optical and does not require intermediate drive electronics. The family of devices solve the leading outstanding problems in optical switching and interconnect technologies. In particular, they form the basis for multiplanar optical signal processors, N. times.
Apparatus Using Diode Laser Logic To Form A Configurable Optical Gate System
US Patent:
5742045, Apr 21, 1998
Filed:
Mar 14, 1996
Appl. No.:
8/617001
Inventors:
Michael A. Parker - Liverpool NY
Paul D. Swanson - Ithaca NY
Stuart I. Libby - Albuquerque NM
James S. Kimmet - Rome NY
Paul D. Swanson - Ithaca NY
Stuart I. Libby - Albuquerque NM
James S. Kimmet - Rome NY
Assignee:
The United States of America as represented by the Secretary of the Air
Force - Washington DC
Force - Washington DC
International Classification:
H01J 4014
US Classification:
250214A
Abstract:
Configurable Optical Gates (COGs) are used to transmit and receive optical signals similar to an interconnect device as well as perform a logic function on those signals (they are smart pixels). COGs consist of a laser with an intracavity modulator, an integrated current source and one or more integrated photodetectors to drive the modulators. The devices are monolithically integrated on MultiQuantum Well (MQW) heterostructure. Certain logic functions require that the bottom N- contact which is under individual devices be accessible and electrically isolated from neighboring devices. For this reason, the laser heterostructure is grown on a semi-insulating substrate. Each COG has a built-in light baffle that prevents the laser emission from coupling into the photodetectors. The optical detection of the COG can be disabled during fabrication and the device can be directly modulated by conventional electronics.