Search

Kai Yuan Chang

from Macon, GA
Age ~64
Get Report
Also known as:
Kai Y Chang, Kal Y Chang
Related to:
Ruilian ChenMiao Chen, 59Yanqing Chen, 45Chen Fajin, 35Meijuan Chen
Connected to:
Angelica ChangAracelys I Chang, 56Asing ChangBright J Chang, 30Catherina J Chang, 69Cecile Chang, 50Celina Chang, 53Chengf ChangChihchieh ChangChristy Y Chang, 53

Kai Chang Phones & Addresses

  • Macon, GA
  • 134 Hunt Club Ct, Savannah, GA 31406 (912) 354-0607
  • 2404 Barndale Dr, Lawrenceville, GA 30044
  • Doraville, GA
  • Pasadena, CA

Work

Company: Georgia institute of technology Sep 2008 Position: Graduate research assistant

Education

School / High School: Georgia Institute of Technology- Atlanta, GA 2008 Specialities: PhD in Chemical & Biomolecular Engineering

Skills

Organic synthesis • polymer synthesis • NMR • GPC • UV-Vis • DLS • SEM • microplate readers • fluorescent microscopy • MATLab • SolidWorks • Fluent • Gambit • AutoCAD

Resumes

Resumes

Kai Chang Photo 1

Associate Dentist

View page
Work:
Lc Dental
Associate Dentist
Kai Chang Photo 2

General Dentist

View page
Work:
Lc Dental
General Dentist
Kai Chang Photo 3

Firefighter

View page
Industry:
Environmental Services
Work:
Federal Fire Department
Firefighter
Kai Chang Photo 4

Kai Chang

View page
Kai Chang Photo 5

Ealing, Hammersmith And West

View page
Work:

Ealing, Hammersmith and West
Kai Chang Photo 6

Kai Chang

View page
Kai Chang Photo 7

Kai Chang

View page
Kai Chang Photo 8

Kai Chang

View page
Location:
United States

Business Records

Name / Title
Company / Classification
Phones & Addresses
Kai Yuan Chang
Aprn
COMMUNITY HEALTH MISSION, INC
Volunteer Health Clinic
310 Eisenhower Dr SUITE 5, Savannah, GA 31406
(912) 692-1451

Publications

Isbn (Books And Publications)

Integrated Active Antennas and Spatial Power Combining

View page
Author

Kai Chang

ISBN #

0471049840

Microwave Ring Circuits and Antennas

View page
Author

Kai Chang

ISBN #

0471131091

RF and Microwave Circuit and Component Design for Wireless Systems

View page
Author

Kai Chang

ISBN #

0471197734

Handbook of Microwave and Optical Components: Optical Components, Fiber and Electro-Optical Components

View page
Author

Kai Chang

ISBN #

0471210099

RF and Microwave Wireless Systems

View page
Author

Kai Chang

ISBN #

0471224324

Encyclopedia Of RF And Microwave Engineering

View page
Author

Kai Chang

ISBN #

0471270539

Rf and Microwave Wireless Systems

View page
Author

Kai Chang

ISBN #

0471351997

Handbook of Optical Components and Engineering

View page
Author

Kai Chang

ISBN #

0471390550

Us Patents

Method Of Making An Optical Fiber Using Preform Dehydration In An Environment Of Chlorine-Containing Gas, Fluorine-Containing Gases And Carbon Monoxide

View page
US Patent:
6776012, Aug 17, 2004
Filed:
Jun 26, 2001
Appl. No.:
09/891903
Inventors:
Kai H Chang - Suwanee GA
David Kalish - Roswell GA
Thomas John Miller - Alpharetta GA
Assignee:
Fitel USA Corp. - Norcross GA
International Classification:
C03B 37027
US Classification:
65412, 65414, 65422, 65424, 65426, 65427
Abstract:
Embodiments of the invention include a method for making optical fiber having reduced aging or hydrogen aging loss over the life of the fiber and optical fiber systems including such optical fibers. The method includes the steps of dehydrating an optical fiber glass core rod in a first environment including oxygen and at least one of chlorine-containing gases, fluorine-containing gases and carbon monoxide; and adjusting the oxygen stoichiometry of the first environment so that it is neither oxygen-rich nor oxygen-deficient. Improved silicon-oxygen stoichiometry during one or more preform manufacturing steps reduces the amount of Si defects generated in the optical fiber preform. Also, deuterium exposure of optical fiber drawn from the preform reduces the likelihood of having atomic defects such as Si defects in the optical fiber that, over time, attract and bond with hydrogen atoms to form molecules that contribute to increased water absorption loss. The inventive method produces optical fibers with improved transmission characteristics, e. g. , optical fibers made by methods according to embodiments of the invention have transmission loss at 1385 nanometers that is less than 0.

Method For Fabricating Optical Fiber Using Deuterium Exposure

View page
US Patent:
7546750, Jun 16, 2009
Filed:
Jul 15, 2003
Appl. No.:
10/620068
Inventors:
Kai H. Chang - Suwanee GA, US
David Kalish - Roswell GA, US
Thomas John Miller - Alpharetta GA, US
Assignee:
Fitel USA Corp. - Norcross GA
International Classification:
C03B 37/018
US Classification:
65378, 65413, 65424, 65426
Abstract:
Embodiments of the invention include a method for making optical fiber having reduced aging or hydrogen aging loss over the life of the fiber and optical fiber systems including such optical fibers. Improved silicon-oxygen stoichiometry during one or more preform manufacturing steps reduces the amount of Si defects generated in the optical fiber preform. Also, deuterium exposure of optical fiber drawn from the preform reduces the likelihood of having atomic defects such as Si defects in the optical fiber that, over time, attract and bond with hydrogen atoms to form molecules that contribute to increased water absorption loss. The inventive method produces optical fibers with improved transmission characteristics, e. g. , optical fibers made by methods according to embodiments of the invention have transmission loss at 1385 nanometers that is less than 0. 33 dB/km and the aging loss increase thereafter is less than 0. 04 dB/km.

Method And Apparatus For Fabricating Optical Fiber Using Adjustment Of Oxygen Stoichiometry

View page
US Patent:
20020197005, Dec 26, 2002
Filed:
Jun 26, 2001
Appl. No.:
09/891900
Inventors:
Kai Chang - Suwanee GA, US
David Kalish - Roswell GA, US
Thomas Miller - Alpharetta GA, US
International Classification:
G02B006/28
C03B037/018
US Classification:
385/024000, 065/413000
Abstract:
Embodiments of the invention include a method for making optical fibers that have reduced aging loss, hydrogen aging and other losses over the life of the fiber, and optical systems including such optical fibers. Improved conditions in fiber manufacturing environments are provided to reduce the likelihood of generating defects in optical fiber preforms that, in optical fiber drawn therefrom, attract and bond with hydrogen atoms to form molecules that increase transmission loss in the fiber. The improved conditions include the establishment and adjustment of the oxygen stoichiometry in one or more of the environments in which optical fiber manufacturing process steps occur. Optical fiber made by methods according to embodiments of the invention have improved transmission characteristics, e.g., transmission loss at 1385 nanometers that is less than 0.33 dB/km and the change in transmission loss thereafter is less than 0.05 dB/km.

Systems And Methods For Recycling Gas Used In Treating Optical Fiber

View page
US Patent:
20040139766, Jul 22, 2004
Filed:
Jan 17, 2003
Appl. No.:
10/346312
Inventors:
Gene Weeks - Duluth GA, US
Junjun Wu - Norcross GA, US
Ramdane Assas - Atlanta GA, US
Kai Chang - Suwanee GA, US
Siu-Ping Hong - Alpharetta GA, US
International Classification:
C03B037/00
US Classification:
065/424000, 065/532000
Abstract:
Systems and methods for treating spools of fiber using recycled gas. Spools of fiber are placed in chambers which can be sealed for exposure to the treatment gas. When a chamber is closed and sealed the treatment gas is pumped into the chamber to a specified pressure temperature and pressure to react with the fiber. Upon completion of the reaction the gas is pumped from the chamber in order to facilitate the removal of the treated fiber. The gas can be evacuated with a vacuum pump and compressed to be stored in a pressure vessel for reuse. At this time the gas may be analyzed. If the concentration of a component is too low, the gas may be vented or it may be enriched so that it may be recycled; otherwise it is compressed for storage and the process is repeated.

Method Of Making A Fiber Having Low Loss At 1385 Nm By Cladding A Vad Preform With A D/D≪7.5

View page
US Patent:
61314153, Oct 17, 2000
Filed:
Jun 20, 1997
Appl. No.:
8/879348
Inventors:
Kai Huei Chang - Suwanee GA
David Kalish - Roswell GA
Thomas John Miller - Alpharetta GA
Michael L. Pearsall - Alpharetta GA
Assignee:
Lucent Technologies Inc. - Murray Hill NJ
International Classification:
C03B 37027
US Classification:
65391
Abstract:
A singlemode optical fiber 700 having very low loss at 1385 nm, and a practical method for making same are disclosed. A core rod 20 is fabricated using vapor axial deposition to have a deposited cladding/core ratio (D/d) that is less than 7. 5. The core rod is dehydrated in a chlorine- or fluorine-containing atmosphere at about 1200. degree. C. to reduce the amount of OH present to less than 0. 8 parts per billion by weight, and then consolidated in a helium atmosphere at about 1500. degree. C. to convert the porous soot body into a glass. The consolidated core rod is elongated using an oxygen-hydrogen torch that creates a layer of OH ions on the surface of the rod that are largely removed by plasma etching. Finally, the core rod is installed in a glass tube 40 having a suitably low OH content. Thereafter, the tube is collapsed onto the rod to create a preform 60.

Upward Collapse Process And Apparatus For Making Glass Preforms

View page
US Patent:
20220286204, Sep 8, 2022
Filed:
May 25, 2022
Appl. No.:
17/824477
Inventors:
- Buford GA, US
Kai Huei Chang - Decatur GA, US
Evan P. Green - Lawrenceville GA, US
Carl W. Ponader - Buford GA, US
International Classification:
H04B 10/2507
C03B 37/012
G01B 11/08
G01B 11/25
G02B 6/02
Abstract:
An apparatus for producing large glass preforms with minimal clad to-core waveguide distortion from a glass body having a weight, an outer surface, core rods, and a cladding surrounding and separated from the core rods by a gap. The apparatus includes collars affixed to the top and bottom of the cladding; a spacer upon which the core rods rest; a first unit holding and supporting both the bottom collar and the spacer; a second unit holding and supporting the top collar; and a frame defining a heating zone having a heating element to heat the glass body. The weight of the glass body above and below the molten glass in the heating zone is supported by the first and second units without contacting the outer surface of the glass body.

Methods For Producing A Hollow-Core Fiber And For Producing A Preform For A Hollow-Core Fiber

View page
US Patent:
20220227656, Jul 21, 2022
Filed:
Jul 15, 2020
Appl. No.:
17/617779
Inventors:
- Hanau, DE
- Buford GA, US
Kai Huei Chang - Alpharetta GA, US
Qiulin Ma - Decatur GA, US
International Classification:
C03B 37/012
C03B 37/027
Abstract:
Methods are known for producing an anti-resonant hollow-core fiber which has a hollow core extending along a fiber longitudinal axis and an inner jacket region that surrounds the hollow core, said jacket region comprising multiple anti-resonant elements. The known methods have the steps of: providing a cladding tube that has a cladding tube inner bore and a cladding tube longitudinal axis along which a cladding tube wall extends that is delimited by an interior and an exterior; forming a number of precursors for anti-resonant elements at target positions of the cladding tube wall; and elongating the primary preform in order to form the hollow-core fiber or further processing the primary preform in order to form a secondary preform from which the hollow-core fiber is drawn. The aim of the invention is to achieve a high degree of precision and an exact positioning of the anti-resonant elements in a sufficiently stable and reproducible manner on the basis of the aforementioned methods. This is achieved in that the formation of the anti-resonant element precursors includes the formation of elongated pressure chambers, each of which adjoins a wall that can be deformed under pressure and heat in the region of the target positions of the anti-resonant elements and which cause a section of the deformable wall to protrude in the direction of the cladding tube inner bore under the effect of pressure and heat, thereby forming an anti-resonant element or a precursor for same, while carrying out a process according to step (c).

Elongation Method And Preform For Producing An Optical Glass Component

View page
US Patent:
20210130221, May 6, 2021
Filed:
Jan 19, 2021
Appl. No.:
17/152518
Inventors:
- Buford GA, US
Kai Huei Chang - Decatur GA, US
Evan P. Green - Lawrenceville GA, US
International Classification:
C03B 37/025
C03B 37/012
Abstract:
Method of producing glass components and preforms for use in the method. The preform includes a primary rod having a constant outside diameter and a flat bottom portion, wherein the primary rod comprises a core rod surrounded by at least one outer cladding layer; and a cylindrical sacrificial tip having a first end attached to the flat bottom portion of the primary rod, a second end opposite the first end, and a hollow interior region extending fully from the first end to the second end, wherein the sacrificial tip is circular in cross section and the first end of the sacrificial tip has a constant inside diameter and outside diameter along its entire length from the first end to the second end, and wherein the constant outside diameter is equal to the outside diameter of the primary rod. When the preform is heated in a furnace, the sacrificial tip melts and collapses into a drawing bulb which either draws the primary rod directly into the glass fiber or results in a tapered (i.e. tipped) preform for subsequent fiber draw. Material waste as well as the drip time is reduced and the cladding-to-core ratio, crucial for waveguide properties, is maintained for the whole preform compared to a square cut preform without the sacrificial tip.

Wikipedia References

Kai Chang Photo 9

Kai Chang

Control profile
Kai Yuan Chang from Macon, GA, age ~64 Get Report