Matthias Wagner

US Patent:

6553981, Apr 29, 2003

Filed:

Jun 16, 2000

Appl. No.:

09/596171

Inventors:

Artur P. Suckewer - Princeton NJ
Matthias Wagner - Princeton NJ
Gunter Schemmann - Princeton NJ

Assignee:

Knite, Inc. - Monmouth NJ

International Classification:

F02P 900

US Classification:

123620, 123626

Abstract:

In one embodiment, a system for providing electrical energy to a traveling spark ignitor operating in an internal combustion engine is disclosed. The system may include a conventional ignition system connected to the ignitor and a follow-on current producer which produces a follow-on current that travels between electrodes of the ignitor after an initial discharge of the conventional ignition system through the ignitor. The system may also include a disabling element that prevents the follow-on current from being transmitted to the ignitor. The disabling element may prevent the follow-on current from being transmitted to the ignitor based upon current operating conditions of the engine. When the disabling element prevents the follow-on current from being transmitted to the ignitor the system operates in a conventional manner. When the disabling element allows the follow-on current to be transmitted to the ignitor the system operates in a in manner that creates a traveling spark between the electrodes of the ignitor.

US Patent:

6670599, Dec 30, 2003

Filed:

Mar 20, 2001

Appl. No.:

09/813362

Inventors:

Sigurd Wagner - Princeton NJ
Matthias Wagner - Boston MA
Eugene Y. Ma - Brookline MA
Adam M. Payne - Princeton NJ

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

H01L 3100

US Classification:

2502141, 257 80, 438141

Abstract:

Materials suitable for fabricating optical monitors include amorphous, polycrystalline and microcrystalline materials. Semitransparent photodetector materials may be based on silicon or silicon and germanium alloys. Conductors for connecting to and contacting the photodetector may be made from various transparent oxides, including zinc oxide, tin oxide and indium tin oxide. Optical monitor structures based on PIN diodes take advantage of the materials disclosed. Various contact, lineout, substrate and interconnect structures optimize the monitors for integration with various light sources, including vertical cavity surface emitting laser (VCSEL) arrays. Complete integrated structures include a light source, optical monitor and either a package or waveguide into which light is directed.

US Patent:

6879014, Apr 12, 2005

Filed:

Mar 20, 2001

Appl. No.:

09/813454

Inventors:

Sigurd Wagner - Princeton NJ, US
Matthias Wagner - Boston MA, US
Eugene Y. Ma - Brookline MA, US
Adam M. Payne - Princeton NJ, US

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

H01L031/075

US Classification:

257458, 257434, 257449, 257452, 257457, 257459

Abstract:

Materials suitable for fabricating optical monitors include amorphous, polycrystalline and microcrystalline materials. Semitransparent photodetector materials may be based on silicon or silicon and germanium alloys. Conductors for connecting to and contacting the photodetector may be made from various transparent oxides, including zinc oxide, tin oxide and indium tin oxide. Optical monitor structures based on PIN diodes take advantage of the materials disclosed. Various contact, lineout, substrate and interconnect structures optimize the monitors for integration with various light sources, including vertical cavity surface emitting laser (VCSEL) arrays. Complete integrated structures include a light source, optical monitor and either a package or waveguide into which light is directed.

US Patent:

6985281, Jan 10, 2006

Filed:

Nov 27, 2002

Appl. No.:

10/306056

Inventors:

Matthias Wagner - Cambridge MA, US
Robert Murano - Malden MA, US
Eugene Y. Ma - Chestnut Hill MA, US
Steven Sherman - Boston MA, US
Lawrence H. Domash - Conway MA, US

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

G02F 1/29

US Classification:

359315, 359578

Abstract:

An optoelectronic device including a header having an upper surface and including a plurality of conducting pins extending up through the upper surface; an optical device; a tunable optical filter, wherein the optical device and the tunable optical filter are arranged in a vertical stack mounted on and extending above the upper surface of the header and wherein the tunable optical filter is electrically connected to the plurality of conducting pins; and a cap affixed to the header and along with the header defining a sealed interior containing the optical device and the tunable optical filter, wherein the cap has a top surface with a window formed therein, and wherein the window is aligned with the tunable optical filter and the optical device.

US Patent:

7002697, Feb 21, 2006

Filed:

Aug 2, 2002

Appl. No.:

10/211970

Inventors:

Lawrence H. Domash - Conway MA, US
Adam M. Payne - Conway MA, US
Eugene Y. Ma - Brookline MA, US
Nikolay Nemchuk - North Andover MA, US
Ming Wu - Princeton NJ, US
Robert Murano - Malden MA, US
Steven Sherman - Arlington MA, US
Matthias Wagner - Boston MA, US

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

G01B 9/02

US Classification:

356519

Abstract:

An optical instrument including: a thermo-optically tunable, thin film, free-space interference filter having a tunable passband which functions as a wavelength selector, the filter including a sequence of alternating layers of amorphous silicon and a dielectric material deposited one on top of the other and forming a Fabry-Perot cavity structure having: a first multi-layer thin film interference structure forming a first mirror; a thin-film spacer layer deposited on top of the first multi-layer interference structure, the thin-film spacer layer made of amorphous silicon; and a second multi-layer thin film interference structure deposited on top of the thin-film spacer layer and forming a second mirror; a lens for coupling an optical beam into the filter; an optical detector for receiving the optical beam after the optical beam has interacted with the interference filter; and circuitry for heating the thermo-optically tunable interference filter to control a location of the passband.

US Patent:

7049004, May 23, 2006

Filed:

Sep 19, 2003

Appl. No.:

10/666974

Inventors:

Lawrence H. Domash - Conway MA, US
Eugene Ma - Chestnut Hill MA, US
Robert Murano - Melrose MA, US
Nikolay Nemchuk - North Andover MA, US
Adam Payne - Atlanta GA, US
Steven Sherman - Boston MA, US
Matthias Wagner - Cambridge MA, US
Ming Wu - Arlington MA, US

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

B32B 9/04
G02B 1/00

US Classification:

428446, 428641, 428622, 428687, 428620, 4289122, 359788, 359582, 359584, 359586

Abstract:

According to various embodiments and aspects of the present invention, there is provided a dynamically tunable thin film interference coating including one or more layers with thermo-optically tunable refractive index. Tunable layers within thin film interference coatings enable a new family of thin film active devices for the filtering, control, modulation of light. Active thin film structures can be used directly or integrated into a variety of photonic subsystems to make tunable lasers, tunable add-drop filters for fiber optic telecommunications, tunable polarizers, tunable dispersion compensation filters, and many other devices.

US Patent:

7221827, May 22, 2007

Filed:

Sep 7, 2004

Appl. No.:

10/935692

Inventors:

Lawrence H. Domash - Conway MA, US
Matthias Wagner - Cambridge MA, US

Assignee:

Aegis Semiconductor, Inc. - Woburn MA

International Classification:

G02B 6/26
G02B 6/42
G02F 1/19
H04B 10/18

US Classification:

385 47, 385 27, 385 89, 359288, 3593375

Abstract:

An optical dispersion compensator including: a spacer element having a top surface and a bottom surface; a thin film, multi-layer mirror formed on the top surface of the spacer element, the thin film mirror having a thermally tunable reflectivity; a highly reflective mirror element formed on the bottom surface of the spacer element; and a heater element for controlling a temperature of the thermally tunable thin film mirror.

US Patent:

7402803, Jul 22, 2008

Filed:

Jun 7, 2006

Appl. No.:

11/448450

Inventors:

Matthias Wagner - Cambridge MA, US
Shuyun Wu - Acton MA, US
Eugene Y. Ma - Newton MA, US

Assignee:

Redshift Systems Corporation - Burlington MA

International Classification:

G01J 5/00

US Classification:

2503383

Abstract:

A thermally tunable pixel element includes a substrate; a thermally tunable filter island; a thermal absorption structure in direct thermal contact with and extending beyond the thermally tunable filter island; and a thermal isolation structure providing a thermally isolating path between the thermal absorption structure and the substrate.