Xiao K Shen from Kirkland, WA, age 45

Resumes

Xiao Shen

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Location:

United States

Publications

Us Patents

Method And System For Performance Monitor For Digital Optical Dwdm Networks

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US Patent:

7769256, Aug 3, 2010

Filed:

Dec 10, 2007

Appl. No.:

11/953828

Inventors:

Yu Sheng Bai - Los Altos CA, US
Xiao Andy Shen - San Bruno CA, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

G02B 6/28

US Classification:

385 24, 385 14, 385 15, 385 16

Abstract:

A system for performance monitoring for a DWDM network. The system includes a photonic integrated device configured to receive an optical signal and output a first plurality of electrical signals for a plurality of channels respectively. The system also includes a clock and data recovery device configured to receive the first plurality of electric signals. Additionally, the system includes a switch device coupled to the first clock and data recovery device without an error correction device in between. The switch includes a first interface to output a second plurality of electrical signals and a second interface to add or drop one or more channel devices. The switch also includes an output port configured to provide information associated with the plurality of channels. An error detection device is coupled to the output port and is configured to monitor and report performance of the channels.

Method And Apparatus For Dwdm Line Card

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US Patent:

7801445, Sep 21, 2010

Filed:

Sep 19, 2007

Appl. No.:

11/857990

Inventors:

Yu Sheng Bai - Los Altos Hills CA, US
Xiao Andy Shen - San Bruno CA, US

Assignee:

FutureWei Technologies, Inc. - Plano TX

International Classification:

H04J 14/00
H04J 14/02
H04B 10/00

US Classification:

398 83, 398 46, 398155

Abstract:

A system and method for multiple-channel line card. The system includes a first photonic integrated device configured to receive a first optical signal and output a first plurality of electrical signals for a first plurality of channels respectively. The first plurality of channels corresponds to a first plurality of wavelength ranges associated with the first optical signal. Additionally, the system includes a first clock and recovery device configured to receive the first plurality of electric signals and retime the first plurality of electric signals, and a first switch coupled to the first clock and recovery device, a first interface, and a second interface. Moreover, the system includes the first interface configured to output a second plurality of electrical signals to another system for multiple-channel line card, and the second interface configured to couple with one or more plugged first channel devices.

Wavelength Locker For Simultaneous Control Of Multiple Dense Wavelength Division Multiplexing Transmitters

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US Patent:

8611750, Dec 17, 2013

Filed:

Oct 14, 2009

Appl. No.:

12/579196

Inventors:

Hongbing Lei - Sunnyvale CA, US
Xiao A. Shen - San Bruno CA, US
Yu Sheng Bai - Los Altos Hills CA, US

Assignee:

Futurewei Technologies, Inc. - Plano TX

International Classification:

H04J 14/02
H04B 10/04

US Classification:

398 95, 398 93, 398 17, 398 25, 398 32, 398 34, 398182, 398195, 398196

Abstract:

An apparatus comprising a plurality of optical transmitters coupled to a fiber, a signal generator coupled to the optical transmitters and configured to provide a single pilot tone to the optical transmitters, and a processor positioned within a feedback loop between the fiber and the optical transmitters, the processor configured to adjust a wavelength for each of the optical transmitters to lock the wavelengths. An apparatus comprising at least one processor configured to implement a method comprising receiving an optical signal comprising a pilot tone, detecting an amplitude and a phase of the pilot tone, calculating a quadrature term using the amplitude and the phase, and wavelength locking the optical signal using the quadrature term.

Enabling Thermal Efficiency On A Silicon-On-Insulator (Soi) Platform

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US Patent:

20190293863, Sep 26, 2019

Filed:

Mar 21, 2018

Appl. No.:

15/927290

Inventors:

- Plano TX, US
Ge Yi - San Ramon CA, US
Li Yang - San Jose CA, US
Xiao Shen - San Bruno CA, US

International Classification:

G02B 6/122
G02B 6/136
G02B 6/132

Abstract:

A method for fabricating a photonic integrated circuit (PIC) comprises providing a silicon-on-insulator (SOI) wafer comprising an insulator layer disposed between a base semiconductor layer and a SOI layer, wherein the SOI layer comprises a waveguide, providing at least one slot within the SOI layer, wherein the at least one slot is positioned on the same or opposite sides of the waveguide, and wherein the at least one slot is positioned at a predetermined distance away from the waveguide, and removing a portion of the insulator layer to form an etched-out portion of the insulator layer, wherein the etched-out portion is positioned directly beneath the waveguide, and wherein a width of the etched-out portion is at least the width of the waveguide

All-Optical Networks Based On Switchable Wavelength Connects (Swcs)

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US Patent:

20190058932, Feb 21, 2019

Filed:

Jul 24, 2018

Appl. No.:

16/044208

Inventors:

- Plano TX, US
Feng Zhang - San Jose CA, US
Xiao Andy Shen - San Bruno CA, US

International Classification:

H04Q 11/00
H04B 10/66
H04B 10/50
H04J 14/02

Abstract:

An all-optical network comprises: a first network; a second network; and a PWXC coupling the first network to the second network and comprising passive optical components. A method comprises: receiving a first optical signal from a first tail node of a first network; directing the first optical signal from a first input port of a PWXC to a first output port of the PWXC using first passive optical components; and transmitting the first optical signal to a third head node of a third network. An all-optical network comprising: a light bank; a first network coupled to the light bank; a second network coupled to the light bank; and a first PWXC coupling the first network and the second network.

Tunable Laser And Manufacturing Method For Tunable Laser

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US Patent:

20190027896, Jan 24, 2019

Filed:

Sep 21, 2018

Appl. No.:

16/138648

Inventors:

- Shenzhen, CN
Hongmin Chen - Santa Clara CA, US
Hongbing Lei - Santa Clara CA, US
Xiao Andy Shen - Santa Clara CA, US

International Classification:

H01S 5/06
H01S 5/125
H01S 5/343

Abstract:

A wavelength tunable laser includes: a heating layer, a dielectric layer, reflectors, a transport layer, a support layer, and a substrate layer. The heating layer is located above the transport layer; the transport layer is located above the support layer, and the transport layer includes an upper cladding layer, a waveguide layer, and a lower cladding layer from top to bottom; the reflector is located in the transport layer; the support layer has a protection structure, where the protection structure forms a hollow structure together with the transport layer and the substrate layer, and the hollow structure has a support structure; and the substrate layer is located below the support layer. The heating layer, the reflector, and a part of the transport layer form a suspended structure to prevent heat dissipation. Thus thermal tuning efficiency can be improved, and power consumption can be lowered.

Tunable Laser And Control Method For Same

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US Patent:

20180323578, Nov 8, 2018

Filed:

Jul 13, 2018

Appl. No.:

16/034471

Inventors:

- Shenzhen, CN
Hongmin CHEN - Santa Clara CA, US
Hongbing LEI - Santa Clara CA, US
Xiao Andy SHEN - Santa Clara CA, US

International Classification:

H01S 5/0683
H01S 5/026
H01S 5/06

Abstract:

A tunable laser is provided, including a first reflector, a second reflector, a phase adjustment area, a gain area, a first detector, a second detector, and a controller. The phase adjustment area is located between the first reflector and the gain area, the gain area is located between the phase adjustment area and the second reflector, a reflectivity of the first reflector is adjustable, and a reflectivity of the second reflector is adjustable. The first detector is configured to convert an optical signal of the first reflector into a first electrical signal. The second detector is configured to convert an optical signal of the second reflector into a second electrical signal. The controller is configured to adjust at least one of the reflectivity of the first reflector or the reflectivity of the second reflector based on the first electrical signal and the second electrical signal.

Electro-Absorption Modulator With Local Temperature Control

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US Patent:

20180149890, May 31, 2018

Filed:

Nov 28, 2016

Appl. No.:

15/362554

Inventors:

- Plano TX, US
YuSheng Bai - Los Altos Hills CA, US
Hongbing Lei - San Jose CA, US
Xiao Andy Shen - San Bruno CA, US

International Classification:

G02F 1/025
G08C 23/04
H04B 10/077

Abstract:

Methods, apparatus, and systems are provided including an electro-absorption modulator (EAM) with local temperature control for optical communication. One aspect provides an optical EAM including a semiconductor portion configured to modulate light for transmission or reception of an optical signal. The modulator includes a temperature sensing element configured to sense temperature and to provide an output signal based on the sensed temperature, and a temperature control element configured to control temperature of the semiconductor portion based on the output signal from the temperature sensing element. In one example, the semiconductor portion includes germanium silicon (GeSi).