PowerPhotonic Ltd. - Light Forge LB 8/24

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Ohara Corp. - Optical Glass, Polish substrates 10-23

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Photonics Dictionary

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fiber optic guided missile

A weapon launched from a ground-based platform and controlled by a two-way fiber optic data link. The fiber is payed out from a bobbin in the back of the missile.

fiber optic gyroscope

A fiber optic gyroscope (FOG) is a type of gyroscope that uses the interference of light waves to detect changes in orientation or rotation. It operates based on the principle of the Sagnac effect,...

fiber optic illuminators -> fiber optics

The use of thin flexible glass or plastic fibers as wave guides — or "light pipes" — to channel light from one location to another. Fiber optics is based off of the principle of total...

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

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...

fiber optic preform

A fiber optic preform is a cylindrical glass rod or tube used as the starting material for manufacturing optical fibers. It serves as the precursor from which optical fibers are drawn. The process of...

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 scanner

A scanner in which a fiber optic assembly replaces a lens system.

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 sensor

A fiber optic sensor is a device that uses optical fibers to detect and measure physical, chemical, biological, or environmental parameters. Unlike traditional electrical sensors, fiber optic sensors...

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 optic transceiver

A fiber optic transceiver, often simply referred to as an "optical transceiver," is a device used in fiber optic communications to transmit and receive data over optical fibers. It integrates both a...

fiber optic window

The face of a cathode-ray tube (CRT) that has a fiber optic sheet attached to its surface. The sheet's fibers are at right angles to the face, allowing the transmittance of the fluorescent trace...

fiber optics

The use of thin flexible glass or plastic fibers as wave guides — or "light pipes" — to channel light from one location to another. Fiber optics is based off of the principle of total...

fiber photometry

An optical recording technique that uses light source(s), a beamsplitting cube, light detector(s) and an optical fiber chronically implanted in animal brain to deliver excitation light to neurons...

fiber undercut

The distance between the surface of a ferrule and the surface of a fiber end, provided that the ferrule extends above the fiber end. If the fiber end extends above the ferrule surface, the difference...

fiber-based confocal luminescence microscope

A microscope in which laser light is delivered through single-mode fibers that replace the pinhole usually used in confocal microscopy. When the Gaussian mode is imaged from the fiber output onto the...

fiber-coupled LED

A fiber-coupled LED (light-emitting diode) refers to an LED device that is optically coupled to an optical fiber for the purpose of efficient light transmission. In this configuration, the LED serves...

fiber-coupled photoconductive antenna

A fiber-coupled photoconductive antenna (FCPA) is a type of optoelectronic device that combines a photoconductive antenna with optical fibers for the purpose of generating or detecting terahertz...

fiber-lens fusing

A method of terminating optical fibers by forming a lens directly on the end of the fiber, eliminating the need for precise end-to-end placement or epoxy sealing in fiber connections.

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...

fiberdyne

fiber optic self-homodyne

fiberless optics -> free-space optics

Free-space optics (FSO), also known as optical wireless communication or optical wireless networking, refers to the transmission of data using modulated beams of light through free space (air or a...

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.

Fick's law

Relation between a material's transport rate and the material's concentration gradient and the diffusion coefficient.

fiducial point

One or more spots placed in the field of view of an optical system to provide a means of reference.

field

1. In raster scan television, one of the two scans that are interlaced to make up a frame. 2. See field of view.

field curvature -> curvature of field

A lens aberration that causes a flat object surface to be imaged onto a curved surface rather than a plane.

field effect transistor photodetector

A photodetector employing photoregeneration of carriers in the channel region of an FET structure to provide photodetection with current gain.

field emission display

An X-Y electrically addressable series of arrays with individual electron emitters bombarding a phosphor-coated transparent plate. The phosphor is induced into luminescence, similar to traditional...

field emission microscope

An image-forming instrument in which a strong electrostatic field causes cold emission of electrons from a sharply rounded point or from an object that is located on that point. The electrons are...

field frequency -> field repetition rate

The number of fields scanned per second in a television system. The US standard is 60. Also called field frequency.

field glass

A handheld binocular telescope that is commonly of the Galilean type.

field ion microscope

An extremely powerful microscope that renders individual ionized atoms visible by using an electric field to propel the ions to a fluorescent screen where they are magnified.

field lens

1. A lens situated at or near the plane of an internal image to project the aperture of a previous objective or erector upon the aperture of a following lens. 2. A lens at or near the plane of a...

field of collimator

An expression of the tolerance of decentration of a laser diode from the optical axis: the region around the axis in the focal plane of the collimator in which the facet can be located and still...

field of view

The field of view (FOV) refers to the extent of the observable world or the visible area that can be seen at any given moment through a device, such as an optical instrument, camera, or sensor. It is...

field pattern

Intensity of emission as a function of direction in a given plane.

field repetition rate

The number of fields scanned per second in a television system. The US standard is 60. Also called field frequency.

field stop

An aperture located at an image plane of an optical system that determines the size and shape of the image.

field tilt

The angle measured between the focal surface containing the image and a plane normal to the optical axis.

fifth-order aberrations

Secondary aberrations remaining after the primary (Seidel) aberrations have been corrected.

figure tolerance

The allowable departure from the given figure or geometrical form. It may be described in terms of fringes or wavelengths.

figure

In optics, the geometrical form of an optical surface.

figuring

The process whereby the shape of an optical surface is altered by polishing.

filament emission

The freeing of electrons from a filament in an electron tube as the result of the filament being heated by an electric current.

filament transformer

A transformer that is designed to regulate the amount of current that passes through an electron tube's filament.

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