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16 terms
Photonics Dictionary: I
Clear All Filters x
fiber optics x
I x
IFOG
interferometric fiber optic gyroscope
image transducer
Any arrangement of a bundle of optical fibers that alters the shape of the image. For example, by systematic regulation of the spacing of the fibers from the entrance end to the exit end, a...
imagescope
->
fiberscope
An optical instrument consisting of an objective lens, a coherent (usually flexible) fiber bundle and an eyepiece to examine the output of the fiber bundle.
impurity level
In the context of optical materials, the term "impurity level" refers to the presence of foreign atoms or molecules within the material that deviate from its regular or intrinsic composition. These...
incoherent bundle
A bundle of filaments of optical glass or other transparent materials that transmit only light, not optical images. The arrangement of the individual fibers in the bundle is not sufficiently regular...
indent
A flaw deliberately introduced into an optical fiber to prepare it for cleaving.
indium phosphide
Indium phosphide (InP) is a compound semiconductor material composed of indium (In) and phosphorus (P). It belongs to the III-V group of semiconductors, where elements from groups III and V of the...
InGaAs photodiode
An InGaAs photodiode refers to a photodetector device that is constructed using a semiconductor material composed of a combination of indium (In), gallium (Ga), and arsenic (As). The term InGaAs...
insertion loss
The total optical power loss caused by the insertion of an optical component such as a connector, splice or coupler into a fiber optic system. See attenuation.
inside vapor-phase oxidation
A method that produces low-loss optical fibers. A glass tube rotates while reactants pass through the tube and heat is externally applied by a burner that traverses the tube. The oxidizable vapors in...
intensified vidicon
A standard direct-readout vidicon tube linked by fiber optics to an intensifier for increased sensitivity.
intensity-modulated sensor
A type of fiber optic sensor that responds to a change in the intensity of received light caused by the displacement or other phenomena being measured.
intermodal distortion
->
multimode distortion
In an optical waveguide,- typically a multimode fiber - the distortion resulting from differential mode delay, i.e. axial rays (modes), with the shortest path length, will have the shortest...
interstitial absorbing coating
An absorbing coating medium between fibers, used in some fused fiber optic plates to absorb unwanted light. Such coatings are sometimes called EMA (extramural absorption).
irradiated cross-linked polyolefin
A thermosetting material used in the jacket of fiber optic cables.
isolator
In the context of electronics and optics, an isolator refers to a device that allows the transmission of signals in one direction while attenuating or blocking signals in the opposite direction. The...
Photonics Dictionary
I
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