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- Coupling_loss abstract "Coupling loss also known as connection loss is the loss that occurs when energy is transferred from one circuit, circuit element, or medium to another. Coupling loss is usually expressed in the same units—such as watts or decibels—as in the originating circuit element or medium.Coupling loss in fiber optics refers to the power loss that occurs when coupling light from one optical device or medium to another. (See also Optical return loss.)Coupling losses can result from a number of factors. In electronics (see Coupling (electronics)), impedance mismatch between coupled components results in a reflection of a portion of the energy at the interface. Likewise, in optical systems, where there is a change in index of refraction (most commonly at a fiber/air interface), a portion of the energy is reflected back into the source component. Another major source of optical coupling loss is geometrical. As an example, two fibers coupled end-to-end may not be precisely aligned, with the result that the two cores overlap somewhat. Light exiting the source fiber at a portion of its core that is not aligned with the core of the receiving fiber will not (in general) be coupled into the second fiber. While some such light will be coupled into the second fiber, it is not likely to be efficiently coupled, nor will it generally travel in an appropriate mode in the second fiber. Similarly, even for two perfectly aligned cores, where there is a gap of any significant distance between the two fibers, there will be some geometric loss due to spread of the beam. Some percentage of the light rays exiting the source fiber face will not intersect the second fiber within its entrance cone.".
- Coupling_loss wikiPageID "2888093".
- Coupling_loss wikiPageRevisionID "544156342".
- Coupling_loss auto "yes".
- Coupling_loss date "December 2009".
- Coupling_loss hasPhotoCollection Coupling_loss.
- Coupling_loss subject Category:Electronics.
- Coupling_loss subject Category:Fiber_optics.
- Coupling_loss type BodyPart105220461.
- Coupling_loss type Eye105311054.
- Coupling_loss type FiberOptics.
- Coupling_loss type Organ105297523.
- Coupling_loss type Part109385911.
- Coupling_loss type PhysicalEntity100001930.
- Coupling_loss type SenseOrgan105299178.
- Coupling_loss type Thing100002452.
- Coupling_loss comment "Coupling loss also known as connection loss is the loss that occurs when energy is transferred from one circuit, circuit element, or medium to another. Coupling loss is usually expressed in the same units—such as watts or decibels—as in the originating circuit element or medium.Coupling loss in fiber optics refers to the power loss that occurs when coupling light from one optical device or medium to another. (See also Optical return loss.)Coupling losses can result from a number of factors.".
- Coupling_loss label "Coupling loss".
- Coupling_loss label "耦合损耗".
- Coupling_loss sameAs m.0899r5.
- Coupling_loss sameAs Q5178039.
- Coupling_loss sameAs Q5178039.
- Coupling_loss sameAs Coupling_loss.
- Coupling_loss wasDerivedFrom Coupling_loss?oldid=544156342.
- Coupling_loss isPrimaryTopicOf Coupling_loss.