Term
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Definition
| Optical Time Domain Reflectometer |
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Term
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Definition
| An extremely thin flexible thread of pure cladded glass. |
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Term
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Definition
Light Amplification by Stimulated Emission of Radiation:
A device that generates a light source used in optical fiber communication. |
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Definition
| The distance between two points of a like phase in a wave. |
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Definition
| A card made up of material similar to photographic film that changes colors when exposed to light. |
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Definition
Safe as long as they are not disassembled
(CD ROM) |
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Term
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Definition
Eye hazard if beam is viewed
(BAR Code Scanner) |
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Term
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Definition
Eye hazard if collected or focused on the eye
(Laser Pointer) |
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Term
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Definition
| Eye hazard if the direct or reflected beam is viewed |
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Term
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Definition
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Term
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Definition
| Separates Lasers into various Classes |
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Definition
| A method used to lock and mark one end of a line in order to allow someone to safely work on the other end. |
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Term
| Visible light is generated between what wavelengths |
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Definition
390nm & 780nm in wavelength
or
384THz && 769THz |
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Term
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Definition
| 1 billionth of a meter or a millimicron |
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Term
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Definition
Terahertz
A trillion hertz or 1,000 Gigahertz |
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Term
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Definition
| One billion cycles per second or 1 billion Hertz (Hz) |
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Term
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Definition
| The ratio of the velocity of light of two mediums of optical glass |
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Definition
Allows only a single mode of light to propagate through the fiber core.
(Long Distances) |
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Term
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Definition
Allows many nodes of light to propagate through the core.
Limited Distance, mainly used in headends |
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Term
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Definition
| A photo diode used to detect light from an optical fiber and convert the light to an electrical source |
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Term
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Definition
Erbium-doped fiber amplifier
Used to amplify light (1550nm) Uses an Erbium-doped Fiber & a pump Laser |
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Term
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Definition
Ytterbium Erbium-doped fiber amplifier:
It provides an even greater gain than an EDFA Optical Amplifier |
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Term
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Definition
| The difference between transmitted and received power resulting from the loss through equipment, lines, or other transmission devices; usually expressed in decibels. |
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Term
| Typical Fiber Loss for 1550nm Light per KM |
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Definition
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Term
| Typical fiber loss for 1310nm light per KM |
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Definition
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Term
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Definition
| Sum of all the losses associated with a fiber link between the optical fiber transmitter and the optical fiber receiver. |
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Term
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Definition
Fusion = 0.1dB
Comcast Fusion spec = 0.03dB
Mechanical = 0.25dB |
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Term
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Definition
Fiber Loss:
Splice Loss:
Connector Loss:
Coupler(Splitter) Loss:
_________________________
Loss Budget |
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Term
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Definition
| Formula to convert milliwatts to dBm |
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Term
| Optical Time Domain Reflectometer |
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Definition
| Test equipment used to visually see the losses, breaks and distance in an optical fiber link |
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Term
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Definition
| (Attenuation 1 + Attenuation 2) % 2 |
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Term
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Definition
| Formula To convert dB to milliWatts |
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Term
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Definition
| A jumper cable for optical connections |
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Term
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Definition
| A board for making optical connections consisting of sleeves used to line up two connectors. |
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Term
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Definition
| Fibers are contained in a plastic tube much larger than the optical fibers and only has a single strength member. |
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Term
| Types of Fiber cable packing |
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Definition
*Loose Tube
*Flex Tube
*Unitube
*Ribbon Tube
*Ribbon Stranded |
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Term
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Definition
| Color coded tubes that house and protect the optical fibers within a fiber optic cable. |
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Term
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Definition
| Method of joining two optical fibers of the same type using an electrical arc to form a precision splice |
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Term
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Definition
| A Temporary or Emergency method of splicing fibers using a plastic form to hold and lock the fibers together |
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Term
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Definition
| A device that scores and then breaks the optical fiber to prepare it for splicing |
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Term
| 2 ways a fusion splicer lines up fibers |
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Definition
*(LID) Local Injection and Detection
*Profile Alignment |
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Term
| Local Injection and Detection (LID) |
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Definition
| Uses a low powered laser transmitter and receiver to determine if the fiber ends are properly aligned & will have loss characteristics that are within specifications |
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Term
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Definition
| Uses a computer program and a video magnifying system to line up the fiber ends. |
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Term
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Definition
| A device used to wrap and store excess fiber optic cable in an aerial location |
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Term
| 6 Steps to Fiber prep & splicing |
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Definition
1) Prep the Cable
2) Prepare the enclosure
3) Route the fiber through the enclosure
4) Clean and cleave the fiber
5) Splice and protect the fiber
6) Seal the enclosure |
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Term
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Definition
| A string (or strings) included as part of the optical fibers protection, used to separate and cut the outer jacket and armor. |
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Term
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Definition
*Patch Panel Related
*System Related
*Installation Related
*Construction Related |
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Term
| Fiber Restoration Procedures |
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Definition
*Check the transmitter
*Check the transmitters patch cords
*Check the patchcords at the receiver
*Check the cable plant |
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Term
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Definition
*Complete set of hand tools
*D-Gel Compound
*Alcohol and wipes
*Cleaver
*Mechanical Splices |
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Term
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Definition
| Mechanical device used to join and align two fibers together or connect fiber optic connectors to equipment |
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Term
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Definition
| A single optical fiber with a protective jacket and installed optical connectors |
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Term
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Definition
Snap Connector
A rectangular plastic form used to connect optical fiber to optical devices |
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Term
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Definition
Ferruled Connector
Used like a snap connector, but a twist lock feature much like a BNC RF connector |
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Term
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Definition
Ultra Polish Connector
Precision polished flat cut to provide a precision mating of the two optical fiber glass surfaces |
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Term
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Definition
Angle Polish Connector
Uses an 8 to 12 degree angled cut end |
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Term
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Definition
| A special optical fiber connector used in gigabit ethernet devices |
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Term
| Wet Method (fiber cleaning) |
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Definition
Lint - free wipes
Isopropyl alcohol > 90% Purity
Lint - free swabs or urethane foam heads |
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Term
| Dry Method (Fiber Cleaning) |
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Definition
| Slide the fiber connector fiber end across the cleaning track once on each side |
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Term
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Definition
| Optical fiber with erbium added to the glass during the manufacturing process to give the fiber useful properties when properly lased |
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Term
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Definition
| Light that is reflected back to the source and contributes to the optical fiber loss |
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Term
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Definition
| The distance that can not be seen by the OTDR because its too close to the OTDR source |
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Term
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Definition
| 500-1000 Meters of extra fiber connected to the OTDR to bypass the deadzone |
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Term
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Definition
| Fiber optic measurement based on the equivalent heating power of the light measured in dBm |
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Term
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Definition
| Device used to test the optical power. |
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Term
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Definition
| Device that converts an amount of light to a power level. |
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Term
| Types of Optical Power meter Detectors |
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Definition
*Silicon (Si)
*Germanium (Ge)
*Indium-Gallium-Arsenide (InGaAs) |
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Term
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Definition
| A cabinet or rack that houses the splices of the outside plant fiber to the inside headend, node or OTN |
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Term
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Definition
Optical Cable Entry Facility
Water resistant enclosure that is intended for storing trays of optical fiber splices between incomming outside plant fibers cables and the inside fiber cables going to the fiber patch panels in the Headend, hubs or OTN. |
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Term
| Total Internal Reflection |
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Definition
| The effect that causes the optical signal to remain within the core of the optical fiber. |
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