Wei Lun Chen

7519240, Apr 14, 2009

Jul 17, 2007

11/779108

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US

Infinera Corporation - Sunnyvale CA

G02F 1/01

385 1, 385 2, 385 3, 385 4, 385 8, 385 9, 385 11, 385 14, 385 15, 385 27, 385 31, 385 45, 385 46

A wavelength independent multi-section optical coupler having at least three optical couplers, and at least two differential phase cells. Each optical coupler has two waveguides forming a coupling region having a net coupling value. The coupling value for each coupling region of the at least three optical couplers is different than the coupling values of the other two coupling regions. Each differential phase cell connects adjacent ones of said optical couplers. Each differential phase cell causes a differential phase shift in light signals traversing between the optical couplers, wherein the differential phase shifts of the differential phase cells, and the coupling value for each coupling region are chosen so as to minimize wavelength, and fabrication sensitivity of said wavelength independent multi-section optical coupler for a designed power splitting ratio.

7526151, Apr 28, 2009

Jul 16, 2007

11/778434

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US
John V. Hryniewicz - Columbia MD, US
Wenlu Chen - Catonsville MD, US
David M. Gill - Pasadena MD, US
Oliver King - Frederick MD, US
Roy R. Davidson - Columbia MD, US

Infinera Corporation - Sunnyvale CA

G02B 6/12

385 14, 385 15, 385 39, 385129

An intermediate structure used to form an integrated optics device comprising a substrate, a cladding on the substrate, at least one real waveguide on the cladding, and at least one dummy waveguide optically coupled with the real waveguide. The real waveguide forms a part of a predetermined planar lightwave circuit. The dummy waveguide does not form a part of the predetermined planar lightwave circuit.

7565041, Jul 21, 2009

Oct 26, 2007

11/925221

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US

Infinera Corporation - Sunnyvale CA

G02B 6/26

385 11, 385 14, 385 39

The present invention is directed to an on-chip symmetric optical circuit having one or more integrally fabricated polarization rotators forming a monolithic, solid state polarization independent symmetric circuit. The symmetric optical circuit has at least one integrally fabricated rotator positioned in a plane of symmetry of at least one optical fiber, waveguide or circuit path of the symmetric optical circuit. The folded symmetric optical circuit may be for example a Mach-Zehnder type optical circuit or an arrayed waveguide grating optical circuit.

7702188, Apr 20, 2010

Jul 24, 2007

11/782457

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US

Infinera Corporation - Sunnyvale CA

G02F 1/295
G02B 6/26

385 5, 385 28, 385 32

A polarization beam splitter-polarization rotator-polarization beam combiner optical structure comprising a pair of polarization rotators having a polarization beam splitter associated with the input ends of the two polarization rotators, and a polarization beam combiner associated with output ends of the two polarization rotators, and a method of purifying a light signal comprising TE and TM modes by disassociating the primary TE and TM modes from first order splitter and rotation error components.

8133465, Mar 13, 2012

Sep 11, 2006

11/518832

Liming Dai - Beavercreek OH, US
Wei Chen - New York NY, US

University of Dayton - Dayton OH

H01L 21/00

423445R, 423445 B, 252502, 252510, 252511, 438 22, 310319, 977707, 977742, 977783, 977842, 977953, 977932

A polymer-carbon nanotube composite film is provided for use as a sensor for detecting chemical vapors. The composite film is formed by coating perpendicularly-aligned carbon nanotubes with a polymer selected from poly(vinyl acetate), poly(isoprene), or blends thereof. The sensor may be formed by attaching at least two electrodes to the polymer-carbon nanotube composite film. The sensor may be used in any applications where the sensor is capable of detecting a change in conductivity in the composite.

8213799, Jul 3, 2012

Dec 30, 2008

12/345824

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US
John V. Hryniewicz - Columbia MD, US
Sai T. Chu - Columbia MD, US
Jeff Rahn - Sunnyvale CA, US
Mehrdad Ziari - Pleasanton CA, US

Infinera Corporation - Sunnyvale CA

H04J 14/02

398 82, 398212, 398214

A planar lightwave circuit (PLC) includes a substrate, a tunable filter, a demultiplexer (DEMUX), and an optical processor each disposed on the substrate. The tunable filter is configured to filter at least one of a bandwidth or a wavelength of a Wavelength Division Multiplexed (WDM) optical input signal. The DEMUX is connected to the tunable filter and configured to receive a filtered WDM optical input signal at an input and to supply one of a plurality of channels of the filtered WDM input signal at a respective one of a plurality of outputs. Each of the plurality of channels corresponds to one of a plurality of wavelengths of the filtered WDM input signal. The optical processor includes a bit-delay interferometer communicating with a respective one of the plurality of outputs of the DEMUX. The optical processor is configured to receive one of the plurality of channels from the DEMUX and output a plurality of demodulated optical signal components.

8213802, Jul 3, 2012

Dec 30, 2008

12/345817

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US
John V. Hryniewicz - Columbia MD, US
Sai T. Chu - Columbia MD, US
Jeff Rahn - Sunnyvale CA, US
Mehrdad Ziari - Pleasanton CA, US
Timothy Butrie - Orefield PA, US
Michael Reffle - Center Valley PA, US
Charles H. Joyner - Sunnyvale CA, US

Infinera Corporation - Sunnyvale CA

H04B 10/06

398121, 398207, 398214

An optical receiver includes a first substrate including a demultiplexer and a first optical waveguide array. An input of the demultiplexer is configured to receive a wavelength division multiplexed optical input signal having a plurality of channels. Each of the plurality of channels corresponds to one of a plurality of wavelengths. Each of the plurality of outputs is configured to supply a corresponding one of the plurality of channels. The first optical waveguide array has a plurality of inputs. Each of the inputs of the first optical waveguide array is configured to receive a corresponding one of the plurality of channels. A second substrate is in signal communication with the first substrate and includes an optical detector array. The optical detector array has a plurality of inputs, each of which is configured to receive a corresponding one of the plurality of channels and generate an electrical signal in response thereto.

8224139, Jul 17, 2012

Aug 21, 2008

12/195699

Brent E. Little - Glen Head NY, US
Wei Chen - Ellicott City MD, US

Infinera Corporation - Sunnyvale CA

G02B 6/42
H04B 10/12

385 45, 3593371, 35933711

Consistent with the present disclosure a compact, integrated tunable filter is provided that can adjust the power levels of optical signals output from an optical amplifier, for example, so that the amplifier has a uniform spectral gain. The tunable optical filter includes a planar lightwave circuit (PLC) having cascaded Mach-Zehnder interferometers, each of which having corresponding differential optical delays. At least one of the differential optical delays is different than the rest. Alternatively, the differential optical delays are different from one another. Each of the Mach-Zehnder interferometers is connected to one another by a tunable optical coupler. Such a filter has an improved frequency response in that the number of shapes that the transmission spectrum may have is increased. Accordingly, the optical filter may be more finely tuned to more effectively flatten, for example, the output of the optical amplifier. In addition, since the tunable optical filter is realized with a planar lightwave circuit (PLC) component, manufacturing costs can be reduced, and a more compact device can be obtained.