Gang Paul Chen

US Patent:

6347175, Feb 12, 2002

Filed:

Jul 14, 1999

Appl. No.:

09/354361

Inventors:

Gang Chen - Horseheads NY
Lyle David Kinney - Bath NY
Emmanuel C Onyiriuka - Painted Post NY
Mike Xu Ouyang - Corning NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 602

US Classification:

385128, 80 88

Abstract:

A copper-gallium alloy is deposited on a nonconductive substrate, such as glass, ceramic, or polymeric material, to provide a conductor to which solder will readily adhere, such that electrical contacts to photonic and electrical components can be made. The copper-gallium thin film can also be used to provide a surface for solder sealing a component within a hermetically sealed enclosure. In a preferred embodiment, the copper-gallium alloy was from about 1 to about 40 percent gallium to about 99 to about 60 percent copper and was deposited to a thickness of from about 400 nanometers to about 3 microns. The copper-gallium film is deposited utilizing sputtering or electron beam deposition equipment.

US Patent:

6356681, Mar 12, 2002

Filed:

Jul 9, 1999

Appl. No.:

09/350750

Inventors:

Gang Chen - Horseheads NY
Qi Wu - Painted Post NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 634

US Classification:

385 37, 385 10, 385 24, 385123, 385140, 372102, 359130

Abstract:

The method and apparatus of the present invention achieves the trimming and, therefore, tuning of fiber optic devices by, in on embodiment, precisely heating a small area of a fiber to allow its elongation when mounted under tension in its package. By pulsing a source of heat in precise amounts, the elongation can be precisely controlled within 1 picometer precision over a tuning range of about 200 picometers. In another embodiment with fibers having core dopants which can be diffused, the optical length of an optical fiber can be trimmed with nanometer precision. By employing a controlled source of localized energy applied to the optical fiber, real time trimming can be achieved in both systems by injecting a broad band source of energy at the input of the device and coupling a spectral analyzer at its output to monitor the frequency characteristic of the optical device during trimming. In a preferred embodiment, the energy source comprised a CO laser having a relatively narrow beam corresponding to the diameter of the optical fiber. Energy from the laser is directed to a small area of the optical fiber in pulses which provide precise control of the trimming process.

US Patent:

6411746, Jun 25, 2002

Filed:

Jan 18, 2000

Appl. No.:

09/484491

Inventors:

Darol Chamberlain - Ithaca NY
Gang Chen - Horseheads NY
Steven B. Dawes - Corning NY
Peter J. McNeilly - Painted Post NY
Mike X. Ouyang - Painted Post NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02F 1035

US Classification:

385 2, 385 10, 385 37, 385 40, 385128

Abstract:

The present invention relates to a tunable optical device that includes an optical fiber device having optical properties that vary with temperature and a heater. The heater is thermally coupled to the optical fiber device. The heater includes a metal layer and two electrical contacts that are electrically connected to the metal layer. The electrical contacts are spaced apart from one another along the metal layer. The electrical resistance of the portion of the metal layer between the contacts varies with temperature and serves as a resistive heater. The invention also includes a controller that is electrically connected to the heater. The controller provides electrical power to the heater and measures the electrical voltage across the heater. The controller compares the measured electrical voltage to a pre-selected reference value. The controller then regulates the amount of electrical current supplied to the heater.

US Patent:

6459487, Oct 1, 2002

Filed:

Sep 4, 2001

Appl. No.:

09/944126

Inventors:

Gang Paul Chen - Monterey Park CA 91754
Avishay Eyal - Pasedena CA 91106
Anthony S. Kewitsch - Santa Monica CA 90402
Victor Leyva - Pasedena CA 91104
George A. Rakuljic - Santa Monica CA 90402

International Classification:

G01B 902

US Classification:

356491, 356492

Abstract:

Optical components, particularly microoptic glass components used in synthesizing birefringence in filter systems based on polarization interferometer techniques, are fabricated using systems and methods which provide accurate frequency periodicity measurements. These measurements are derived from differential delays induced by in-process glass elements between beam components in a polarization interferometer unit and from progressive wavelength scanning across a wavelength band of interest. The consequent sinusoidal output variation has peak to peak spacings which are measured to provide frequency periodicity values from which precise length corrections for the optical elements can be calculated.

US Patent:

6546167, Apr 8, 2003

Filed:

Dec 11, 2001

Appl. No.:

10/014324

Inventors:

Gang Chen - Walnut CA
Stephanus J. Spammer - Painted Post NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02B 628

US Classification:

385 24, 385 37, 385 46, 359130

Abstract:

One aspect of the invention is an optical add/drop multiplexer. The optical add/drop multiplexer includes a first optical circulator, the first circulator includes a first port, a second port, and a third port. The optical add/drop multiplexer also includes a first tunable grating coupled to the first port and a second tunable grating coupled to the first grating. The optical add/drop multiplexer further includes a second optical circulator, the second optical circulator includes a fourth port, coupled to the second grating; a fifth port, and a sixth port. Wherein the first tunable grating is a fiber Bragg grating and wherein the second tunable grating is a fiber Bragg grating.

US Patent:

6697541, Feb 24, 2004

Filed:

May 12, 2000

Appl. No.:

09/569647

Inventors:

Gang Chen - Horseheads NY
Steven B. Dawes - Corning NY
Glenn E. Kohnke - Painted Post NY

Assignee:

Corning Incorporated - Corning NY

International Classification:

G02F 1295

US Classification:

385 4, 385 37

Abstract:

A dynamically tunable filter controls the magnitude of couplings between core and cladding modes of a waveguide by surrounding the waveguide with an overcladding having an adjustable refractive index. The coupled modes are attenuated along the core to produce the desired spectral response. The adjustment to the overcladding index is made in a range that is above the refractive index of the underlying cladding to vary amplitudes of attenuated bands of wavelengths without shifting central wavelengths of the bands.

US Patent:

6846113, Jan 25, 2005

Filed:

May 15, 2003

Appl. No.:

10/438411

Inventors:

Xian-Li Yeh - Walnut CA, US
Gang Paul Chen - Walnut CA, US

International Classification:

H04N 595

US Classification:

385 88, 385 90, 385 91

Abstract:

Locally heated low temperature solder glass is used to permanently fix an optical fiber with sub-micron precision to a glass ceramic submount inside a high power pump laser module. The fiber is manipulated into a predetermined alignment while the solder glass is still molten and the solder glass is then cooled to its solidified state. The predetermined alignment may include an offset to compensate for subsequent thermally related dimensional changes as the solder glass cools and solidifies. If necessary, the solder glass can be remelted and the fiber realigned with a different offset if the first alignment attempt is less than optimal. This alignment process has been demonstrated to provide reliable and efficient coupling of an optical fiber to a high power pump laser within very tight tolerances. A similar process can also be applied to other micro-optics assemblies where high precision, high reliability fiber fixing is required.

US Patent:

7829063, Nov 9, 2010

Filed:

Apr 7, 2008

Appl. No.:

12/099135

Inventors:

Hartmuth C. Kolb - Playa Del Rey CA, US
Joseph C. Walsh - Pacific Palisades CA, US
Dhanalakshmi Kasi - Los Angeles CA, US
Vani P. Mocharla - Los Angeles CA, US
Bing Wang - San Jose CA, US
Umesh B. Gangadharmath - Los Angeles CA, US
Brian A. Duclos - Kalamazoo MI, US
Kai Chen - Los Angeles CA, US
Wei Zhang - Los Angeles CA, US
Gang Chen - Los Angeles CA, US
Henry Clifton Padgett - Hermosa Beach CA, US
Farhad Karimi - Canton MA, US
Peter J. H. Scott - Marina-del-Ray CA, US
Zhiyong Gao - Los Angeles CA, US
Qianwa Liang - Hacienda Heights CA, US
Thomas Lee Collier - Perkasie PA, US
Tieming Zhao - Los Angeles CA, US
Chunfang Xia - Los Angeles CA, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61K 51/00
C07D 343/00

US Classification:

424 111, 549 32

Abstract:

The present application discloses methods for identifying inhibitors with high binding-affinity for the carbonic anhydrase-IX (CA-IX) enzyme using click chemistry and uses the candidates thereof as positron emission tomography (PET) imaging agents.