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Fiber Optic

fiber Optic

Definition: Fiber optic is a data transmission technology that uses very thin glass or plastic fibers to transmit light signals as information carriers.

Fiber Optic Structure:

  • Core: Central part where light propagates
  • Cladding: Outer layer surrounding the core with lower refractive index
  • Buffer Coating: Mechanical protection for the fiber
  • Jacket: Outer protective layer of the cable

Working Principle:

  • Uses Total Internal Reflection principle
  • Light is completely reflected within the core
  • Data is encoded in light pulse form
  • Transmission speed approaches the speed of light

Types of Fiber Optic:

  1. Single Mode: Small core (~9 μm), long distance transmission
  2. Multi Mode: Large core (~50-62.5 μm), short to medium distance

Advantages:

  • Extremely high bandwidth
  • Very fast transmission speed
  • Immune to electromagnetic interference
  • High data security
  • Long transmission distance without repeaters
  • Resistant to corrosion and weather

Applications:

  • Internet and telecommunications
  • Computer networks (LAN/WAN)
  • Cable TV systems
  • Industrial sensors
  • Medical equipment (endoscopy)
  • Security systems

Supporting Components:

  • Optical Transmitter (LED/Laser)
  • Optical Receiver (Photodiode)
  • Optical Amplifier
  • Splitter and Coupler
  • Connector and Splice

Installation Considerations:

  • Proper cable routing and protection
  • Minimum bend radius requirements
  • Clean connections and splicing
  • Testing and certification
  • Environmental protection