Chi N Wu

US Patent:

6389197, May 14, 2002

Filed:

Feb 10, 2000

Appl. No.:

09/501824

Inventors:

Vladimir Iltchenko - La Canada CA
Lute Maleki - Pasadena CA
Steve Yao - Diamond Bar CA
Chi Wu - San Marino CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02B 626

US Classification:

385 28, 385 30, 385 37, 372 9

Abstract:

A system of coupling optical energy in a waveguide mode, into a resonator that operates in a whispering gallery mode. A first part of the operation uses a fiber in its waveguide mode to couple information into a resonator e. g. a microsphere. The fiber is cleaved at an angle which causes total internal reflection within the fiber. The energy in the fiber then forms an evanescent field and a microsphere is placed in the area of the evanescent field. If the microsphere resonance is resonant with energy in the fiber, then the information in the fiber is effectively transferred to the microsphere.

US Patent:

6488861, Dec 3, 2002

Filed:

Jun 12, 2001

Appl. No.:

09/880590

Inventors:

Vladimir Iltchenko - La Canada CA
Lute Maleki - Pasadena CA
Steve Yao - Diamond Bar CA
Chi Wu - San Marino CA

Assignee:

California Institute of Technology - Pasadena CA

International Classification:

G02B 626

US Classification:

216 24, 216652, 216 55, 216 66, 216 80, 216 97, 20419234, 21912169, 21912173, 21912185

Abstract:

A system of coupling optical energy in a waveguide mode, into a resonator that operates in a whispering gallery mode. A first part of the operation uses a fiber in its waveguide mode to couple information into a resonator e. g. a microsphere. The fiber is cleaved at an angle which causes total internal reflection within the fiber. The energy in the fiber then forms an evanescent field and a microsphere is placed in the area of the evanescent field. If the microsphere resonance is resonant with energy in the fiber, then the information in the fiber is effectively transferred to the microsphere.

US Patent:

6563997, May 13, 2003

Filed:

Nov 28, 2000

Appl. No.:

09/723757

Inventors:

Chi Wu - San Marino CA
Xiaoming Yin - Pasadena CA

Assignee:

Lighteross, Inc. - Monterey Park CA

International Classification:

G02B 610

US Classification:

385130, 385129, 385131, 385132, 385 14, 438 31, 438 29, 438 69

Abstract:

A method of forming a reflecting surface on an optical component is disclosed. The method includes forming a first mask so as to protect a ridge region of a light transmitting medium. The ridge region is a region where a ridge of a waveguide will be formed. The method also includes performing a first etch of the light transmitting medium so as to form a side of the ridge. The first mask defines a profile of the side of the ridge during the first etch. The method further includes performing a second etch of the light transmitting medium so as to form the reflecting surface. The first mask defines a profile of the reflecting surface during the second etch.

US Patent:

6596185, Jul 22, 2003

Filed:

Feb 16, 2001

Appl. No.:

09/785565

Inventors:

Wenhua Lin - Pasadena CA
Chi Wu - San Marino CA

Assignee:

Lightcross, Inc. - Montesey Park CA

International Classification:

B29D 1100

US Classification:

216 24, 438462, 216 41

Abstract:

A method of separating optical components is disclosed. The method includes obtaining a substrate structure having a plurality of optical components formed on the substrate structure. The method also includes performing a separation etch on a separation region of the substrate structure. The separation region is selected such that separating the substrate structure at the separation region separates at least one of the optical components from the other optical components.

US Patent:

6792180, Sep 14, 2004

Filed:

Mar 19, 2002

Appl. No.:

10/101481

Inventors:

Chi Wu - San Marino CA

Assignee:

Kotura, Inc. - Monterey Park CA

International Classification:

G02B 634

US Classification:

385 37, 385140

Abstract:

The optical component includes an array of array waveguides. The optical component also includes a first light distributing component configured to distribute a first light signal to the array waveguide. The first light signal is distributed such that a fraction of the first light signal enters each array waveguide as a light signal fraction. The optical component also includes a second light distribution component configured to received the light signal fractions from the array waveguides. The light signal fractions are received so they combine to from a second light signal with a periodic intensity distribution.

US Patent:

8439615, May 14, 2013

Filed:

Jul 26, 2007

Appl. No.:

11/828467

Inventors:

Chi H. Wu - Quincy MA, US
Liu C. Lei - ZhaBei Dist., CN
Thomas J. Socci - Fairport NY, US
Douglas Nobbs - Dover NH, US
George R. Watchko - Stoneham MA, US

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

F16B 35/04

US Classification:

411107, 411999

Abstract:

An assembly for mounting electronic components includes a face plate comprising a thermoplastic material. The face plate includes a retaining element for securing a captive screw and spring assembly for mounting an electronic printed circuit board. The retaining element includes one or more slots adapted to expand the element to permit insertion of the screw and deformation of the hole upon insertion of the screw, while locking the screw to retain the screw in place. This arrangement permits the elimination of the metal standoff frequently used in similar devices. Methods for preparing the assembly and mounting the printed circuit boards are also described.

US Patent:

7267780, Sep 11, 2007

Filed:

Jun 6, 2003

Appl. No.:

10/455865

Inventors:

Chi Wu - San Marino CA, US
Wenhua Lin - Pasadena CA, US

Assignee:

Kotura, Inc. - Monterey Park CA

International Classification:

B29D 11/00

US Classification:

216 24

Abstract:

A method of forming an optical component on a substrate structure includes forming a ridge in a light transmitting medium positioned on a base. The ridge includes a waveguide region configured to propagate light signals and a flange region extending across a longitudinal axis of the waveguide region. The method also includes removing at least a portion of the flange region so as to expose a facet aligned with the waveguide region such that light signals propagated along the waveguide region are transmitted through the facet.

US Patent:

20020041739, Apr 11, 2002

Filed:

Mar 29, 2001

Appl. No.:

09/821822

Inventors:

Chi Wu - San Marino CA, US

International Classification:

G02B006/42
G02B006/30
G02B006/10

US Classification:

385/088000, 385/129000, 385/049000

Abstract:

The invention relates to an optical component. The component includes a base having a support region and an alignment region. A light transmitting medium is positioned over the support region. The light transmitting medium has a light signal carrying region for carrying of light signals. The light signal carrying region ends at a facet. The component also includes a pocket formed in the base. The pocket extends from under the light signal carrying region into the alignment region. The portion of the pocket in the alignment region can be configured to receive an optical fiber such that the optical fiber is aligned with the facet.