18-12-2012, 12:41 PM
Soliton Propagation in Optical Fibers
Soliton Propagation.ppt (Size: 1.95 MB / Downloads: 74)
Internal Reflection in Water
Daniel Colladon
1826 velocity of sound in water
Introduced Compressed air
1841 Beam in jet of water
John Tyndall
1853 Royal Institute talks
1854 needed demo
Faraday suggested demo
Sir Francis Bolton
1884 Illuminated Fountains, London
Internal Reflection in Glass
Glass – Egypt 1600 BCE
Medievel glass blowers
1842 Jacques Babinet
Light Guided in Glass Rods
1880s William Wheeler
Patent for Light Pipes in Homes
Spun Glass Fibers
Rene de Reamur – First in 18th Century
Charles Vernon Boys
Measurement of Delicate Forces – Mass on thread
1887 First quartz fibers
Radiomicrometer – measured candle heat over 2 mi
Herman Hammesfahr
Glass Blower, American Patent for glass fibers
Glass Fabric - Dresses for 1892 World’s Fair - $30,000
Not Practical – scratched, fibers easily broke
Owens-Illinois Glass Company
1931 Mass Production – glass wool
Joint venture with Corning Glass Works => Owens-Corning Fiberglass
1935 Woven into Clothing – without breaking!
Image Transmission
First Facsimile – 1840’s
Alexander Graham Bell – 1875 Telautograph
Henry C. Saint-Rene’
1895 – First Bundle of glass rods
John Logie Baird
Mechanical TV inventor, London
1925 First Public Demo of TV
Bundle of Fibers, 8 lines/frame
Clarence W. Hansell
GE, RCA – 300 Patents
1930 Bundling of fibers to transmit images
Heinrich Lamm
Medical Student - Munich
First transmitted fiber optic image - 1930
Light Leakage
Brian O’Brien,
Opt. Soc. Am., Rochester
Abraham Van Heel
Netherlands, Periscopes, Scramblers
Metal Coating, Lacquer, …
Cladding Hard – clean, smooth, no touching
1952
Holger Moller Hansen
Gastroscope, 1951 Patent, rejected
Avram Hirsch Goldbogen
Mike Todd, 1950
Cinerama – 3 cameras
Clad Optical Fibers
Hopkins and Kapany
Basil Hirshowitz
Gastroentologist
1956 First endoscope at U. Michigan
Lawrence E. Curtiss
Undergraduate
1956 First glass-clad fiber, tube+rod
$5500
J. Wilbur Hicks
Image Scramblers at AO => CIA
LASERs
Charles H. Townes
Coherent Microwave Oscillator – MASER – 1951
With Arthur L.Schawlow (Bell Labs) – LASER
Theodore Maiman 1960
Hughes Research
Ruby laser
PRL rejected paper!
Ali Javan 1960
1.15 micrometer He-Ne Laser
First gas laser
First continuous beam laser
Later: Bell Labs 633 nm version
Visible, stable, coherent