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36 terms

Photonics Dictionary

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fiber bundle

A rigid or flexible, concentrated assembly of glass or plastic fibers used to transmit optical images or light. See aligned bundle; incoherent bundle.

coherent fiber bundle

A coherent fiber bundle (CFB), also known as a coherent fiber optic bundle, is an assembly of multiple optical fibers arranged in a specific geometric pattern to maintain the spatial coherence of...

aligned bundle

An assembly of fibers in which the coordinates of each fiber are the same at the two ends of the bundle. Also called coherent bundle.

borescope

A device for the internal inspection of hard-to-get-at mechanical parts, such as rifle barrels, sewer pipes, oil wells, or gas mains. The long narrow tube used contains a telescope system with as...

cathode-ray tube faceplate

A fiber optic end plate constructed by drawing a bundle of parallel fibers embedded in glass and cutting it into thin slices. These slices are assembled in a plane and heated to produce a...

coherent bundle -> aligned bundle

An assembly of fibers in which the coordinates of each fiber are the same at the two ends of the bundle. Also called coherent bundle.

endoscope

An endoscope is a medical device used for visualizing and examining the interior of hollow organs, body cavities, or confined spaces within the body. It consists of a flexible or rigid tube equipped...

extramural absorption cement

A cement used to reduce crosstalk in fiber optic bundles or plates.

faceplate -> fiber optic faceplate

A plate made up of thousands of glass fibers arranged parallel to one another, i.e., in a coherent bundle, and fused together so that it is hermetically tight. It transfers an image from one plane to...

ferrule

A mechanical fixture, generally a rigid tube, used to confine the stripped end of a fiber or a fiber bundle.

fiber optic faceplate

fiber optic imaging bundle

A fiber optic imaging bundle is a specialized optical device composed of multiple optical fibers bundled together. Each fiber optic strand within the bundle acts as a conduit for transmitting light....

fiber optic lightguide

A bundle of optical fibers arranged randomly for the purpose of transmitting energy, not an image.

fiber optic plate -> fiber optic faceplate

fiber optic probe

A flexible single- or multifiber cable having a bundle of glass fibers arranged to transmit an image.

fiber optic ribbon

A coherent optical fiber bundle in which the configuration is flat rather than round, giving an output in a line.

fiber optic scrambler

A device used for coding messages and having a fiber bundle that is aligned at both ends and scrambled in the middle, potted and cut. The resulting halves of the bundles serve as encoders or decoders...

fiber optic spectrometer

A fiber optic spectrometer is a device used for measuring the spectral content of light. It utilizes optical fibers to transmit light from a source to a spectrometer unit, where the light is...

fiber optic taper

A coherent fiber optic bundle made from fibers whose diameter changes gradually along its length. Used to magnify or reduce the input image.

fiber-linked array image formatter

A wide-field multiobject spectroscopy system used in astronomy, in which a bundle of low-loss optical fibers positioned on the target images is rearranged at its other end into a linear array along...

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.

flexible 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.

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.

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...

launch angle

The angle between the light input propagation vector and the optical axis of an optical fiber or fiber bundle.

lightguide -> fiber optic lightguide

A bundle of optical fibers arranged randomly for the purpose of transmitting energy, not an image.

multileg lightguide

A fiber optic bundle split along its length with the ends of the fibers extending separately to illuminate different points with a single light source.

noncoherent bundle

An assembly of optical fibers that will not transmit coherent images or information because the relationship of the fibers on either end of the assembly is random; Noncoherent fiber bundles are...

packing density

1. In a photonic interconnect, the number of detectors in a given area. Detectors spaced too closely may give rise to crosstalk. 2. In the cross section of a fiber optic bundle, the ratio of fiber...

packing fraction

The ratio of the active core area of a fiber bundle to the total area at its light-emitting or receiving end.

randomized fiber optic cable

Fiber optic cable in which the arrangement of fibers within the bundle has been made random so that output light will be uniformly distributed and not relay the image of the light source at the input...

ringlight

A circular lamp or bundles of optical fibers placed around the perimeter of an objective lens to illuminate the object field below it.

section converter

An arrangement of optical fibers in a bundle whereby the geometric configuration of the input end differs from that of the output end without changing the total area; for example, a circular bundle...

space-division multiplex

In fiber optics, the condition in which each fiber of a bundle carries a separate channel.

spot-to-line converter -> section converter

Photonics Dictionary

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