Chuan C Pu

6445485, Sep 3, 2002

Jan 4, 2001

09/754622

Nicholas J. Frigo - Red Bank NJ
Evan L. Goldstein - Princeton NJ
Lih-Yuan Lin - Little Silver NJ
Chuan Pu - Middletown NJ
Robert William Tkach - Little Silver NJ

ATT Corp. - New York NY

G02F 103

359246

Methods and systems for controlling the state of polarization of an optical beam using micro-machined devices are provided. By cascading a number of simple polarization state rotators integrated on a number of silicon substrates, the state of polarization of an optical beam can be effectively manipulated to any point on the Poincarà sphere.

6498673, Dec 24, 2002

Jan 4, 2001

09/754616

Nicholas J. Frigo - Red Bank NJ
Evan L. Goldstein - Princeton NJ
Lih-Yuan Lin - Little Silver NJ
Chuan Pu - Middletown NJ
Robert William Tkach - Little Silver NJ

ATT Corp. - New York NY

G02F 103

359246

The invention provides methods and systems for micro-machined tunable delay lines. Particularly, the micro-machined tunable delay lines of the present invention utilize adjustable micro-machined micro-mirrors to alter the path length traversed by an optical signal.

6603894, Aug 5, 2003

Jan 26, 2001

09/769481

Chuan Pu - Middletown NJ

Tellium, Inc. - Oceanport NJ

G02B 626

385 18, 385 17, 385 19, 359223, 359224

An optical network element using arrays of mirrors in an optical switch. A lens system is placed in between the mirror arrays and optical signals are passed through the lens system in an off-axis manner in order to increase switching capacity so that larger arrays of mirrors can be used, shorten the optical path through the switch or a combination of both.

6928244, Aug 9, 2005

Nov 27, 2000

09/722955

Evan L. Goldstein - Princeton NJ, US
Lih-Yuan Lin - Little Silver NJ, US
Chuan Pu - Middletown NJ, US
Robert William Tkach - Little Silver NJ, US

AT&T Corp. - New York NY

H04J014/00
H04J014/02
G02B006/26
G02B006/42

398 45, 398 51, 398 54, 398 83, 385 17, 385 18

An optical carrier drop/add transmission system and method for adding a signal to multiplexed input optical signals conveyed by an optical multiplex input line. The multiplexed input optical signals are demultiplexed to provide isolated input optical signals to an optical switch matrix comprising switches in an array of lines and columns, the isolated input optical signals being inputted in a direction parallel to a line of switches in the optical switch matrix. The added optical signal is input in a direction parallel to a column in the optical switch matrix. An output line is selected and the switch that is on the column on which the added optical signal is inputted and on the selected output line is switched.

7231147, Jun 12, 2007

Jul 25, 2005

11/188412

Evan L. Goldstein - Princeton NJ, US
Lih-Yuan Lin - Little Silver NJ, US
Chuan Pu - Middletown NJ, US
Robert William Tkach - Little Silver NJ, US

AT&T Corp. - New York NY

H04J 14/00
G02B 6/26
G02B 6/42

398 45, 398 83, 385 17, 385 18

An optical carrier drop/add transmission system and method for adding a signal to multiplexed input optical signals conveyed by an optical multiplex input line. The multiplexed input optical signals are demultiplexed to provide isolated input optical signals to an optical switch matrix comprising switches in an array of lines and column, the isolated input optical signals being inputted in a direction parallel to a line of switches in the optical switch matrix. The added optical signal is input in a direction parallel to a column in the optical switch matrix. An output line is selected and the switch that is on the column on which the added optical signal is inputted and on the selected output line is switched.

20120194496, Aug 2, 2012

Feb 1, 2011

13/019159

Fan Zhong - Fremont CA, US
David Heald - Solvang CA, US
Wenyu Sun - Longtan, TW
Chuan Pu - Foster City CA, US
Chandra Tupelly - San Ramon CA, US

QUALCOMM MEMS Technologies, Inc. - San Diego CA

G06F 3/038
G02B 26/00
H02N 11/00
B05D 5/12
C03C 15/00

345211, 427 58, 216 17, 310300, 359290

This disclosure provides systems, methods and apparatuses for supporting a mechanical layer. In one aspect, an electromechanical systems device includes a substrate, a mechanical layer, and a post positioned on the substrate for supporting the mechanical layer. The mechanical layer is spaced from the substrate and defines one side of a gap between the mechanical layer and the substrate, and the mechanical layer is movable in the gap between an actuated position and a relaxed position. The post includes a wing portion in contact with a portion of the mechanical layer, the wing portion positioned between the gap and the mechanical layer. The wing portion can include a plurality of layers configured to control the curvature of the mechanical layer.

20130057558, Mar 7, 2013

Sep 7, 2011

13/227263

Chuan Pu - Foster City CA, US
Yi Tao - San Jose CA, US
Chandra S. Tupelly - San Ramon CA, US
Kostadin D. Djordjev - San Jose CA, US
Fan Zhong - Fremont CA, US
Rihui He - San Jose CA, US
Wenyue Zhang - San Jose CA, US

QUALCOMM MEMS Technologies, Inc. - San Diego CA

G06T 1/00
G06F 3/038
B05D 5/12
H02N 1/00

345501, 310300, 345204, 427123

This disclosure provides systems, methods and apparatus for controlling a mechanical layer. In one aspect, an electromechanical systems device includes a substrate and a mechanical layer positioned over the substrate to define a gap. The mechanical layer is movable in the gap between an actuated position and a relaxed position, and includes a mirror layer, a cap layer, and a dielectric layer disposed between the mirror layer and the cap layer. The mechanical layer is configured to have a curvature in a direction away from the substrate when the mechanical layer is in the relaxed position. In some implementations, the mechanical layer can be formed to have a positive stress gradient directed toward the substrate that can direct the curvature of the mechanical layer upward when the sacrificial layer is removed.

20140078185, Mar 20, 2014

Sep 14, 2012

13/616700

Chuan Pu - Foster City CA, US
Yi Tao - San Jose CA, US
Nageswara Rao Tadepalli - San Jose CA, US

G09G 5/10
B05D 5/06

345690, 427 64

This disclosure provides systems, methods and apparatus for writing data to a display. In one aspect, the display includes an array of display elements arranged at the intersection of a plurality of common lines and segment lines. The display also includes a common driver and a segment driver coupled to the common lines and segment lines. According to one aspect, the display includes a greater number of segment lines than columns of display elements in the array. According to another aspect, the display may also include a first number of display element segment electrodes that are coupled to each other along a first common line, and a second number of display element segment electrodes coupled to each other along a second common line, where the first number is different than the second number.