3011960
| Question | Answer |
| Fiber Optic | A technology that uses glass or plastic threads to transmit data using light. |
| Core | The center of the fiber |
| Cladding | Optical material that surrounds the core and traps the light in the core. 1 cladding is 125 microns |
| Total Internal Reflection | A technique to trap light in the core |
| What do you strip off the fiber for termination or splicing? | The buffer |
| Primary buffer coating | A hard protective plastic covering that protects the glass from moisture or physical damage. They can be either 900 microns or 250 micron |
| Fiber optics are immune to..... | Electromagnetic interference |
| Multi-mode fibers | Fibers that Support many propagation packs or transverse modes ( ray of light) |
| Single-mode fibers are used for | Communication links longer than 1,000 meters (3,300 ft.) |
| Attenuation | Loss of optical power or reduction in the strength of a signal |
| OTDR | Optical Time Domain Reflectometer |
| Kilometer | Metric unit used to measure distances between geographical places on land. 1 Kilometer = 1,000 meters |
| Micron | A unit of length equal to one millionth of a meter, used in many technological and scientific fields. 1 inch = 25,400 microns |
| Nanometer | The nanometer is commonly used to specify the wavelength of transmitted light . 1 nanometer -= 1 billionth of a meter |
| Mode | A defined path in which light travels A single magnetic field pattern (ray of light) that travels in the fiber |
| Single mode fiber | Single-mode fiber is for long distances and uses one beam of light. Core = 9 microns Buffer coating = 250 micron Laser wavelength = 1310 or 1550 nm |
| POF | Plastic Optical Fiber |
| Plastic Optical Fiber | Used in consumer HiFi and starting to be a new standard in car communication systems. Core = 1 mm multimode fiber Used for short, low speed networks. |
| Cable | Protects the fibers |
| Jacket | Tough outer covering on the cable. Also used the meet fire codes. |
| Strength Members | Aramid fibers used to pull the cable. |
| Armor | Discourages rodents from chewing the fiber cable |
| Connector | A non-permanent device for connecting 2 fibers or fibers of equipment where they are expected to be disconnected occasionally for testing or rerouting. |
| Ferrule | A tube which hold a fiber for alignment, usually part of a connector. |
| Splice | A joint between two fibers |
| Mechanical Splice | A temporary splice where the fibers are aligned by mechanicals means |
| Fusion Splice | A permanent splice created by welding or fusing 2 fibers together |
| Demarcation Box | The physical point wich |
| Bandwidth | The amount of data that can be carried form one point to another. |
| Decibels (dB) | A unit of measure of optical power which indicates relative power loss. |
| Optical Loss | The amount of optical power lost as light is transmitted through the fiber. |
| Optical Power | Is measured in dBm (decibels) that measures gain and loss. |
| Scattering | The change of direction of light after striking small particles that causes loss in optical fiber. |
| Wavelength | The color of light, usually expressed in nanometers |
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