Gap loss

Gap loss

Gap loss is a type of signal strength loss that occurs in fiber optic transmission when the signal is transferred from one section of fiber or cable to another. cite book|title=Communications Standard Dictionary|author=Martin H. Weik|year=1996|publisher=Springer|isbn=0412083914]

Definition

Specifically, gap loss happens when the signal from one end of a piece of cable is transferred to another, but there is a space, breakage, or gap between them. Since fiber optics transmit data via light the light can cross this gap, but spreads out and is weakened and diffused when it does so.

The light that crosses the gap and enters the next section of cable is broken up. Some of it reflects off, and some will hit the covering of the cable and not enter into the cable. If the gap is small, the gap loss will be small, but if the gap is very large, it may totally corrupt the signal.cite book|title=Free Space Optics: Enabling Optical Connectivity in Today's Networks|author=Heinz Willebrand|coauthors=Baksheesh Ghuman|year=2001|publisher=Sams Publishing|isbn=067232248X]

Gap loss can be caused by many factors, but the most common is poorly fitted multi-sectional fiber optic cables. If there is a break in a directly buried fiber optic line then usually there will simply be a loss of signal. cite book|title=Technician's Guide to Fiber Optics|author=Donald J Sterling|year=2003|edition=4th ed.|publisher=Thomson Delmar Learning|isbn=1401812708]

Effects of gap loss

As a result of signal strength and cohesion being lost (due to the scattering of the light), a fiber optic signal suffering from gap loss is degraded in both quality and throughput.

References

Further reading

*cite book|title=Fiber Optic Reference Guide: a practical guide to the technology|author=David R. Goff|coauthors=Kimberly S. Hansen|edition=3rd ed.|publisher=Focal Press|isbn=0240804864


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Gap junction protein — Gap junction protein, beta 6, also known as GJB6, is a human gene.cite web | title = Entrez Gene: GJB6 gap junction protein, beta 6| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene Cmd=ShowDetailView TermToSearch=10804| accessdate = ] PBB… …   Wikipedia

  • Loss given default (LGD) — Loss Given Default or LGD is a common parameter in Risk Models and also a parameter used in the calculation of Economic Capital or Regulatory Capital under Basel II for a banking institution. This is an attribute of any exposure on bank s… …   Wikipedia

  • Loss given default — Basel II Bank for International Settlements Basel Accords Basel I Basel II Background Banking Monetary policy Central bank Risk …   Wikipedia

  • Gap Amount — Insurance will only cover a certain amount of coverage if leased items are stolen or totaled. There is often a difference between the amount the insurance company covers and the amount of the vehicle that is owed under the lease agreement,… …   Investment dictionary

  • Gap gene — A gap gene encode transcription factors in a developing embryo. They fall under the class of segmentation genes that are expressed during embryonic morphogenesis. Mutations in gap genes are responsible for the loss of contiguous body segments.… …   Wikipedia

  • gap — 1. A hiatus or opening in a structure. 2. An interval or discontinuity in any series or sequence. 3. (G) A period in the cell cycle. g. 1 (G1) in the somatic …   Medical dictionary

  • Gap Insurance — A type of auto insurance that car owners can buy to protect themselves against losses that can arise when the amount of compensation received from a total loss does not fully cover the amount the insured owes on the vehicle s financing or lease… …   Investment dictionary

  • Anion gap — The anion gap is used to aid in the differential diagnosis of metabolic acidosis.CalculationIt is calculated by subtracting the serum concentrations of chloride and bicarbonate (anions) from the concentrations of sodium plus potassium (cations) …   Wikipedia

  • Fulda Gap — The Fulda Gap is a region of lower elevation between the former East German border and Frankfurt, (West) Germany. Named for the town of Fulda, the Fulda Gap was strategically important during the Cold War. Gap refers to a corridor of lowlands… …   Wikipedia

  • Info-gap decision theory — is a non probabilistic decision theory that seeks to optimize robustness to failure – or opportuneness for windfall – under severe uncertainty,[1][2] in particular applying sensitivity analysis of the stability radius type[3] to perturbations in… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”