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Photonics Dictionary: O

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optical waveguide
Any structure having the ability to guide the flow of radiant energy along a path parallel to its axis and to contain the energy within or adjacent to its surface.
optical waveguide preform -> preform
A glass structure from which an optical fiber waveguide may be drawn.
optical waveguide termination
A configuration or device mounted at the end of a fiber or cable that is intended to prevent reflection.
optical wireless -> 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...
optical work
The degree to which the surface of a lens causes an incident ray of light to bend, or the amount of convergence or divergence that the surface contributes to a wavefront passing through it.
optical-grade silicon
The element that resembles a lightweight metal, but when very pure, has a very high electrical resistance and is transparent to the infrared between about 0.5 and 15 µm.
optically active material
A material that can rotate the polarization of light that passes through it. An optically active material exhibits different refractive indices for left- and right-circular polarizations (circular...
optically biaxial crystal
One of a class of crystalline substances belonging to triclinic, monoclinic and orthorhombic systems that have two optic axes. Two polarizations are allowed for any given direction of propagation,...
optically compensating zoom system
A variable focal length lens system that retains the object in focus as one or more lenses move as a unit along its optical axis.
optically coupled isolator -> optoisolator
An optical coupling device that uses light to bridge the gap between incompatible wire communications systems. It contains an input amplifier, a light-emitting diode, a photodiode and an output...
optically isotropic crystal
A transparent crystalline substance that displays the same optical properties (i.e. refractive index) in all directions such that all light rays behave the same in all directions of propagation and...
optically pumped laser
A laser in which stimulated emission is triggered by the absorption by electrons of light from an auxiliary source such as a flash lamp, or another laser. See optical pumping.
optically uniaxial crystal
A transparent crystalline substance in which the refractive index of the optic axis (extraordinary axis) is different from the other two crystal axes. Two polarization directions are allowed for any...
optics
Optics is the branch of physics that studies the behavior and properties of light, including its interactions with matter and its manifestation as both particle and wave phenomena. It encompasses the...
optics of material
The area of optics that deals with the interaction of light with a given material. The optical properties of material are generally described by the absorption, transmission, reflection, and...
optoacoustic
Optoacoustic, or photoacoustic, refers to a phenomenon and related techniques that involve the generation of acoustic waves in a material induced by the absorption of light. The term "optoacoustic"...
optocoupler -> optoisolator
An optical coupling device that uses light to bridge the gap between incompatible wire communications systems. It contains an input amplifier, a light-emitting diode, a photodiode and an output...
optoelectronic
Pertaining to a device that responds to optical power, emits or modifies optical radiation, or utilizes optical radiation for its internal operation. Any device that functions as an...
optoelectronic integrated circuit
A monolithic device containing both photonic and electronic sources, detectors, modulators, etc., on a single semiconductor substrate.
optoelectronic isolator -> optoisolator
An optical coupling device that uses light to bridge the gap between incompatible wire communications systems. It contains an input amplifier, a light-emitting diode, a photodiode and an output...
optoelectronic shutter -> electro-optic shutter
A device used to control or block a light beam by means of the Kerr electro-optical effect.
optoelectronic transistor
A transistor that uses an electro-luminescent source, a transparent base and a photoelectric collector.
optoelectronics
Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light and its interactions with different materials. The term "optoelectronics" is...
optofluidics
Optofluidics is an interdisciplinary field that combines principles from optics and fluidics to create devices and systems that integrate the manipulation of light and fluids. This field focuses on...
optogenetic defibrillation
An optogenetic technique that embeds genetically-engineered proteins to the heart to aid in terminating arrhythmias. After the proteins are embedded in the heart, it can be defibrillated by pulses of...
optogenetics
A discipline that combines optics and genetics to enable the use of light to stimulate and control cells in living tissue, typically neurons, which have been genetically modified to respond to light....
optoisolator
An optical coupling device that uses light to bridge the gap between incompatible wire communications systems. It contains an input amplifier, a light-emitting diode, a photodiode and an output...
optomechanical
Optomechanical refers to the integration of optical and mechanical systems or components. In optomechanical systems, optics (related to the manipulation of light) and mechanics (related to the...
optometer
An instrument designed to measure the refractive power and range of accommodation of the eye. See ophthalmic instruments.
OR
outside radius
orange peel
In the context of imaging, particularly digital imaging and printing, "orange peel" refers to a texture or visual distortion that resembles the surface of an orange peel. This texture can result from...
ORD
optical rotary dispersion
ordinary ray
The ray that has an isotropic speed and maintains a uniform polarization in all propagation directions when traveling in a doubly refracting (birefringent) crystal. It obeys Snell's law upon...
ORFE
optical receiver front end
organic dye
Any organic substance, that when dissolved in appropriate liquid based solvents will absorb and emit electromagnetic radiation in the near ultraviolet, visible and near infrared spectral regions....
organic dye laser
A laser having a lasing material that is a fluorescing organic dye. Depending on the dye used, it can produce emission in any part of the visible spectrum into the near-infrared and ultraviolet, and...
organic light-emitting diode
An organic light-emitting diode (OLED) is a type of light-emitting diode (LED) technology that utilizes organic compounds to produce light. OLEDs are commonly used in display technologies, such as...
organometallic chemical vapor deposition -> metallorganic chemical vapor deposition
A method of growing single crystals in which atoms and molecules from gaseous organic compounds interact and form a layer on a single-crystal substrate.
oriented crystal
A crystal having the axes of its grains aligned so that they have directional magnetic characteristics.
oriented lenticular screen
A lenticular screen having the lenticules tipped about 20° to compensate for off-normal projection.
ORMOSILS
organically modified silicates
ORP
oxidation-reduction potential
ORRAS
optical research radiometrical analysis system
orthicon
A television camera tube in which a low-velocity electron beam scans a photoactive mosaic that has been created by an optical image. Once scanned by the electron beam, the electrical storage capacity...
orthochromatic film
Black and white film that is sensitive to green, blue and violet light but not to red light.
orthographic camera
A camera designed with a telecentric optical system and a narrow field of view; the telecentric optical system (placement of the system's stop at its focal point) ensures that the principal image...
orthonormalization
Optimization method used in optical design computer programs that employs a variable-by-variable approach to construct new variables that are orthogonal. This technique can uncover solutions that...
orthorhombic
Having three unequal angles perpendicular to each other.
orthoscopic
Corrected for distortion.
orthoscopic eyepiece
A telescopic eyepiece that produces a field of view between 40° and 50°. The eyepiece consists of a single element eyelens that is normally plano convex, and a cemented triplet that is...

Photonics DictionaryO

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