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8,726 terms

Photonics Dictionary

mirek

microreciprocal kelvin

mirek (also mired) -> microreciprocal degree

An approximated measure of the smallest change in color temperature detectable by the human eye, defined as the reciprocal of the color temperature times 106. Also called mired or reciprocal...

MIROS

modulation-inducing retrodirective optical system

mirror

A smooth, highly polished surface, for reflecting light, that may be plane or curved if wanting to focus and or magnify the image formed by the mirror. The actual reflecting surface is usually a thin...

mirror blank

A mirror blank refers to the initial piece of material from which a mirror is made. It is typically a flat or slightly curved piece of glass or other substrate that serves as the starting point for...

mirror coating

One or more thin-film layers of optical material deposited on a mirror blank/substrate in order to enhance the way that substrate reflects light. For example of optical materials/optical coatings...

mirror lens

An image-forming system having curved mirrors in place of transparent glass components. Mirror lenses are commonly used for astronomical purposes as well as cheap solutions for very long focal length...

mirror mount

A mirror mount is a mechanical device used to secure and precisely position mirrors in optical systems. Mirrors are essential components in optical setups for reflecting light or redirecting laser...

mirror substrate -> mirror blank

mirror testing

The observation and measurement of the flatness of a mirror surface by contacting an optical flat with the mirror. The process generally is done before coating so as not to damage the delicate coated...

MIRT

molecular infrared track

MIS

metal insulator semiconductor

misalignment loss -> angular misalignment

Angular deviation from the optimum alignment of source to optical waveguide, waveguide to waveguide, or waveguide to detector, resulting in a loss of optical power.

mist -> hackle

A defect in the cleaved end face of an optical fiber, defined as multiple surface irregularities across the fiber surface. A less serious imperfection of the same nature is known as mist.

MITI

Ministry of International Trade and Industry (Japan)

mitochondria

Mitochondria are organelles found in the cytoplasm of eukaryotic cells, which are cells that have a membrane-bound nucleus and other organelles. They are often referred to as the powerhouses of the...

mixed crystal

A homogeneous solid solution with crystal lattice sites occupied, at random, by the molecules or ions of two or more separate compounds

mixed reflection

The simultaneous occurrence of specular and diffuse reflection.

mixed transmission

The simultaneous occurrence of direct and diffuse transmission.

mixed-signal oscilloscope

A mixed-signal oscilloscope (MSO) is a type of electronic test instrument that combines the capabilities of both a traditional oscilloscope and a logic analyzer. It is designed to capture and display...

mixing

Combining light beams, usually of unlike frequencies, to form a single beam with a frequency that is equal to the frequency sum or difference of the original beams. The resultant 'beat' frequency is...

mks

meter-kilogram-second

millilambert; milliliter

modelocked

MLAR

multilayer antireflection coating

MLC

multilayer ceramic

multimode

millimeter

MMC

multimedia controller

MMI

man-machine interface

MMIC

monolothic microwave integrated circuit

MMLD

multimode laser diode

MMR

maximum metal reflector

MMU

mass memory unit

MNOS

metal nitride oxide semiconductor

MNS

metal nitride semiconductor

master oscillation; magneto-optic

MOCVD

metallorganic chemical vapor deposition

MOD

minimum object distance

modal bandwidth

Modal bandwidth is a crucial parameter in optical fiber communication systems, particularly in multimode fiber (MMF) systems. It quantifies the ability of a fiber optic link to transmit data at high...

modal dispersion

Synonym for multimode distortion. Also called mode dispersion.

modal noise

In an optical system, noise created by mode-dependent optical losses and variations in the distribution of radiant power among the modes or relative phases of the modes. Also known as speckle noise.

mode

1. The characteristic of how light propagates through a waveguide that can be designated by a radiation pattern in a plane transverse to the direction of travel. 2. The state of an oscillating system...

mode 1 (and mode 2)

In compact disc systems, the two principal frame formats for data storage. Mode 1 devotes 2048 bytes to user data, reserving 288 bytes for error detection and correction over and above the CIRC...

mode beating

In optics, "mode beating" refers to an interference phenomenon that can occur in laser systems with multiple longitudinal modes. Longitudinal modes are specific electromagnetic field patterns that...

mode coupling

In an optical waveguide, the exchange of power/energy among modes.

mode dispersion

Synonym (regarded by some as erroneous) for multimode distortion, which see.

mode 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...

mode field diameter

For a single-mode fiber, the measurement of the irradiance distribution at the fiber's end face.

mode filling factor

In a laser, the fraction of plasma volume used by a particular transverse mode of oscillation, a determinant of the gain available to the mode.

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Photonics Dictionary

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