fiber optics

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basics of fiber optics

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Fiber Optics : 

Fiber Optics Seeing the light at the end of the tunnel.

Beginning Of Fiber Optics : 

Beginning Of Fiber Optics Swiss Physicist Daniel Colladon Recognized Light Guiding(1841)

How do They Work? : 

How do They Work? Snell’s Law n1 sin(1)=n2 sin(2) The speed and wavelength of light change when entering a different medium Index of Refraction (n=c/v c=speed of light in vacuum)

Slide 4: 

c=arcsin(n2/n1) light is to enter the second medium at an angle greater than critical angle for TIR to occur Total Internal Reflection

sin max=1/no(n12-n22)1/2 acceptance angle : 

sin max=1/no(n12-n22)1/2 acceptance angle cladding index of refraction lower than core index of refraction

Slide 7: 

Visual Demonstration

Single-Mode and Multimode Fibers : 

Single-Mode and Multimode Fibers

Optical Fiber Sizes : 

Optical Fiber Sizes

Outside Vapor Deposition (OVD) Process : 

Outside Vapor Deposition (OVD) Process Laydown

Outside Vapor Deposition (OVD) Process : 

Outside Vapor Deposition (OVD) Process Consolidation

Outside Vapor Deposition (OVD) Process : 

Outside Vapor Deposition (OVD) Process The Draw

Fiber Geometry Parameters: : 

Fiber Geometry Parameters: Cladding Diameter Core/Clad Concentricity Fiber Curl

Fiber Optics in The 20th Century : 

Fiber Optics in The 20th Century Telephone Systems Internet Video Feeds Medical Operations Home Theater Systems

Advantages : 

Advantages Size Immune to Electromagnetic Interference Low Signal Loss Higher Carrying Capacity’ Non-Conductive

Disadvantages : 

Disadvantages Different Signals New system required for Fiber Optics

References : 

References Hecht, Eugene. Optics.4th ed. 2002 Hecht, Jeff. Understanding Fiber Optics. 4th ed. 2002 Mauldin, John H. Light, Lasers, and Optics. 1988 www.sff.net/people/Jeff.Hecht/history.html www.fiber-optics.info/fiber-history.html www.howstuffworks.com/fiber-optic.htm