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Tengda Liheng Du

from San Jose, CA
Age ~60
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Also known as:
Tengda Du Jihua, Jihua Tengda Du, A Du
Phone and address:
1622 Wharton Rd, San Jose, CA 95132
(408) 929-8152
Related to:
Karen Y Chen, 55Li Wang, 48D LihengLiheng Wang, 59
Connected to:
Chang Y Du, 44Changan Du, 62Chongyang Du, 28Christina M Du, 50Daphne Du, 27Doris J Du, 62Elaine Du, 32Eric Du, 61Francis H Du, 32Heng Du, 87

Tengda Du Phones & Addresses

  • 1622 Wharton Rd, San Jose, CA 95132 (408) 929-8152
  • 2560 Ann St, Fremont, CA 94536 (510) 790-2096
  • Stephenville, TX
  • 3600 Khayyam Ave, Orlando, FL 32826
  • Alameda, CA

Work

Company: Ii-vi incorporated Sep 2019 Position: Senior manager

Education

Degree: Doctorates, Doctor of Philosophy School / High School: University of Central Florida 1993 to 2000 Specialities: Physics, Philosophy

Skills

Tosa and Rosa Optical and Package Design... • Fiber Optics • Optics • R&D • Characterization • Design of Experiments • Spc • Product Development • Solidworks • Image Processing • Dwdm • Optical Fiber • Photonics • Optical Communications • Ethernet • Optoelectronics • Fmea • Simulations

Languages

Mandarin

Interests

Fishing and Fish Keeping

Industries

Telecommunications

Resumes

Resumes

Tengda Du Photo 1

Senior Manager

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Location:
San Jose, CA
Industry:
Telecommunications
Work:
Ii-Vi Incorporated
Senior Manager
New Focus Feb 2000 - May 2002
Senior Manufaturing Engineer
Finisar Corporation (Nasdaq: Fnsr) Feb 2000 - May 2002
Senior Optical Design Engineer, Osa Development at Finisar Corporation
Chinese Academy of Sciences Jul 1987 - Oct 1993
Researcher
Education:
University of Central Florida 1993 - 2000
Doctorates, Doctor of Philosophy, Physics, Philosophy Zhejiang University 1980 - 1987
Master of Science, Masters, Engineering
Skills:
Tosa and Rosa Optical and Package Design For High Speed Communication
Fiber Optics
Optics
R&D
Characterization
Design of Experiments
Spc
Product Development
Solidworks
Image Processing
Dwdm
Optical Fiber
Photonics
Optical Communications
Ethernet
Optoelectronics
Fmea
Simulations
Interests:
Fishing and Fish Keeping
Languages:
Mandarin

Publications

Us Patents

Ferrofluid 3-D Gyroscope And Light Modulator

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US Patent:
6400457, Jun 4, 2002
Filed:
May 18, 2001
Appl. No.:
09/861432
Inventors:
Weili Luo - Oviedo FL
Tengda Du - Orlando FL
Jie Huang - East Lansing MI
Assignee:
University of Central Florida - Orlando FL
International Classification:
G01B 902
US Classification:
356459, 356521
Abstract:
Apparatus and methods for passing a focused laser beam through a thin ferrofluid cell creates a spatial distribution in the refractive index of the ferrofluid and generates a diffraction ring patterns. Using a pair of perpendicularly placed ferrofluid cells, two sets of diffraction ring patterns can be produced on two viewing screens. Deformations in the diffraction patterns due to an acceleration can be viewed on the screens, providing a ferrofluid accelerometer. By applying an electric or a magnetic field on a thin ferrofluid sample, the light passing through the sample can be modulated by the field, providing a light modulator. The apparatus and method has applications for detecting acceleration information within a gyroscope and for use in toys.

Free-Space Optical Isolator With Integrated Quarter-Wave Plate

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US Patent:
6977763, Dec 20, 2005
Filed:
Nov 5, 2003
Appl. No.:
10/701674
Inventors:
Steve Wang - San Jose CA, US
Mingkun Shi - Pleasanton CA, US
Frank H. Levinson - San Jose CA, US
Tengda Du - Fremont CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02F001/03
G02B026/00
US Classification:
359246, 359245, 359238
Abstract:
The present invention provides low cost methods and apparatuses for filtering out polarized light reflections in a free-space optical isolator. In one embodiment, a laser directs a non-polarized optical signal through a series of polarizers and rotators in order to isolate an optical signal having a specific polarization. The present invention also includes a quarter-wave plate placed in series with the rotators and polarizers, to help filter away reflections occurring while the signal passes through free space. The inclusion of the quarter-wave plate helps filter away a greater amount of near-end reflections from going back to the laser, even with the use of low cost polarizers. Accordingly, the present invention can polarize an optical signal more efficiently than with prior methods, and at a much lower cost.

Hybrid Cell

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US Patent:
7106508, Sep 12, 2006
Filed:
Sep 3, 2003
Appl. No.:
10/654261
Inventors:
Tengda Du - Fremont CA, US
Xin Luo - Sunnyvale CA, US
Ping Xie - Cupertino CA, US
Evan Green - San Jose CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02B 27/28
US Classification:
359498, 359495, 359496, 398 65
Abstract:
The present invention is a hybrid cell that utilizes a PBS pair in conjunction with a wedge tuner and a crystal to achieve a more stable interleaver. A first PBS splits an incoming optical signal into two orthogonally polarized beams which follow different optical paths through the cell. The length of the wedge tuner and crystal are selected such that the periodicity of the cell is approximately inversely proportional to the free spectral range at a target frequency. The length of the wedge tuner and crystal are also selected such that there is no change in an optical path difference between the two optical paths with respect to a change in temperature over an operating temperature range.

Optical Interleaver And Filter Cell Design With Enhanced Clear Aperture

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US Patent:
7173763, Feb 6, 2007
Filed:
Jun 11, 2004
Appl. No.:
10/866443
Inventors:
Tengda Du - Fremont CA, US
Kevin Dapeng Zhang - Fremont CA, US
Xin Luo - Sunnyvale CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02B 5/30
US Classification:
359498, 359497, 359495, 359501, 359834, 385 11, 398 43, 398 65
Abstract:
An optical interleaver for use in a range of telecommunications applications including optical multiplexers/demultiplexers and optical routers. The optical device includes an optical processing loop which allows multi-stage performance characteristics to be achieved with a single physical filtration stage. Optical processing on the first leg and second legs of the loop is asymmetrical thereby improving the integrity of the optical signals by effecting complementary chromatic dispersion on the first and second legs. A fundamental filter cell within the interleaver filters optical signals propagating on each of the two legs of the optical loop which intersects the fundamental filter cell.

Packages For Devices And Components

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US Patent:
7354203, Apr 8, 2008
Filed:
Jul 11, 2005
Appl. No.:
11/178624
Inventors:
Stefan Pfnuer - Los Gatos CA, US
Tengda Du - Fremont CA, US
Kevin Zhang - San Jose CA, US
Julie S. Eng - Los Altos CA, US
Axel Mehnert - Sunnyvale CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02B 6/36
US Classification:
385 92
Abstract:
A package for maintaining alignment of components includes a frame and a beam with the beam attached to the frame and one end of the beam. One or more components are mounted to the beam. The frame and a portion of the beam are separated from each other by a channel which allows portions of the beam to flex substantially independently of the frame when a force is applied to the frame. Thus, the effects resulting from forces applied to the frame are not experienced by the beam, or are at least attenuated, so that the alignment of the components mounted on the beam is substantially preserved.

Multi-Laser Transmitter Optical Subassemblies For Optoelectronic Modules

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US Patent:
8625989, Jan 7, 2014
Filed:
Jan 21, 2011
Appl. No.:
13/011770
Inventors:
Tengda Du - San Jose CA, US
Bernd Huebner - Santa Clara CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
H04J 14/06
US Classification:
398 65, 398 43
Abstract:
Multi-laser transmitter optical subassemblies (TOSAs) for optoelectronic modules. In one example embodiment, a multi-laser TOSA includes first and second lasers configured to generate first and second optical signals, respectively, a polarization beam combiner (PBC), first and second collimating lenses positioned between the first and second lasers, respectively, and the PBC, a half waveplate positioned between the first laser and the PBC, and a focusing lens. The half waveplate is configured to rotate the polarization of the first optical signal. The PBC is configured to combine the first and second optical signals and transmit the combined first and second optical signals toward the focusing lens.

Optical Interleaver, Filter Cell, And Component Design With Reduced Chromatic Dispersion

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US Patent:
7268944, Sep 11, 2007
Filed:
Jun 11, 2004
Appl. No.:
10/866418
Inventors:
Tengda Du - Fremont CA, US
Kevin Dapeng Zhang - Fremont CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
G02B 5/30
US Classification:
359499, 359497, 359498, 398 81, 385 11
Abstract:
An optical interleaver for use in a range of telecommunications applications including optical multiplexers/demultiplexers and optical routers. The optical device includes an optical processing loop which allows multi-stage performance characteristics to be achieved with a single physical filtration stage. Optical processing on the first leg and second legs of the loop is asymmetrical thereby improving the integrity of the optical signals by effecting complementary chromatic dispersion on the first and second legs. A fundamental filter cell within the interleaver filters optical signals propagating on each of the two legs of the optical loop which intersects the fundamental filter cell.

Collimated Ball Lenses For Optical Triplexers

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US Patent:
7995928, Aug 9, 2011
Filed:
Feb 14, 2008
Appl. No.:
12/031234
Inventors:
Tengda Du - Fremont CA, US
Bernd Huebner - Santa Clara CA, US
Assignee:
Finisar Corporation - Sunnyvale CA
International Classification:
H04B 10/00
US Classification:
398138, 398139, 398135
Abstract:
Optical triplexers are disclosed. The optical triplexers include an optical fiber, a first ball lens optically coupling a first optical signal between a first opto-electronic device and a first wavelength selective filter, and a second ball lens optically coupling a second optical signal between a second opto-electronic device and the first wavelength selective filter. The optical triplexers further include a second wavelength selective filter optically coupling the first and second optical signals between the first wavelength selective filter and a third ball lens and a fourth ball lens optically coupling a third optical signal between a third optical signal between a third opto-electronic device and the second frequency selective filter. The second wavelength selective filter optical couples the third optical signal between the fourth ball lens and the third ball lens. Thus, each of the optical signals are selectively coupled between one of the opto-electronic devices and the optical fiber.
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Tengda Liheng Du from San Jose, CA, age ~60 Get Report