Merits of optical fiber n fiber optic link


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Merits of optical fiber n fiber optic link

  1. 1. Advantages of fiber optics & Fiber optic links By Abdul Raoof wani EN.NO.A1000812004
  2. 2. Advantages/ Merits of fiber optic: Low Power Loss :- An optical fiber offers low power loss which allows for longer transmission distances.  Interference :- Fiber optic cables are immune to electromagnetic interference. It can also be run in electrically noisy environments without concern as electrical noise will not affect fiber .  Weight:- Fiber optic cables are much thinner and lighter than metal wires. They also occupy less space with cables of the same information capacity. Lighter weight makes fiber easier to install .
  3. 3. Contd.  Security:- Fiber optics the most secure medium available sensitive data. for carrying  Safety:-Since the fiber is a dielectric, it does not present a spark hazards.  Flexibility:- It is flexible and bends easily.  Cost:- The raw materials for glass are plentiful means glass can be made more cheaply .  Less expensive:- Several miles of optical cable can be made cheaper than equivalent lengths of copper wire. This saves your provider (cable TV, Internet) and you money.
  4. 4. Contd.  Thinner:- Optical fibers can be drawn to smaller diameters than copper wire.  Less signal degradation :-The loss of signal in optical fiber is less than in copper wire.  Digital signals :- Optical fibers are ideally suited for carrying digital information, which is especially useful in computer networks.  Non-flammable:-Because no electricity is passed through optical fibers, there is no fire hazard
  5. 5. Contd.  Medical imaging :-It is used in bronchoscopes, endoscopes, laparoscopes .  Plumbing :-It is used to inspect sewer lines.  Electrical Insulator:- Optical fibers are made and drawn from silica glass which is nonconductor of electricity and so there are no ground loops and leakage of any type of current.  Early detection of cable damage:- By constantly monitoring an optical network and by carefully measuring the time it takes light to reflect down the fiber, splices in the cable can be easily detected.
  6. 6. Fiber-optic Links : A fiber-optic link (or fiber channel) is a part of an optical fiber communications system which provides a data connection between two points (point-to-point connection).  It essentially consists of a data transmitter, a transmission fiber (possibly with built-in fiber amplifiers), and a receiver. The Design criteria are given in the following : Primary Design Criteria  Data Rate  Link length.
  7. 7. Additional Design Parameters : Modulation format  System  Cost eg Analog/digital fidelity: BER, SNR : Components, installation, maintenance  Upgradeability  Commercial availability
  8. 8. The process of communicating using an optical fiber involves the following : Converting electrical signal to optical signal at the transmitter.  Transmission of optical signal to the cable.  Relaying the signal through the optical-fiber.   Receiving the optical signal at the detector Converting the optical signal back to the electrical signal at the receiver.
  10. 10. Need: To transfer a trigger signal from a noisy environment,  To isolate the signal from high voltage sources,  Eliminate ground loops,  Transfer precise timing signals over a long distance,  Have excellent system reliability,
  11. 11. Features :    Transmit precise timing signals over optical fiber. Prevents ground loops and computer noise effects . Transfers analog signals to distances of up to 3 Km (50Km with Single Mode transceivers) Excellent signal isolation.  Short propagation delay - 200 nSec + 5 uSec/Km.  High Frequency bandwidth: DC to 10 MHz.  Very small size: only 61 x 61 x 28 mm  Low cost: $699.- per pair (Rx + Tx).
  12. 12. THANK YOU