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14 terms
Photonics Dictionary: M
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magnetic rotation spectrum
The absorption spectrum of an element influenced by a magnetic field in the same direction as the transmitted light, which is then exposed to the Faraday effect.
Manufacturing Automation Protocol
A computerized token-passing local area network (LAN) configuration adopted by General Motors for real time control over the mediation of interconnected devices from multiple manufacturers over the...
mask spectrometer
Instrument that uses absorption spectroscopy to detect gases in planetary atmospheres. Dispersed incoming radiation is transmitted to one or more sampling elements, or masks, before reaching the...
maximum luminous transmittance
The greatest luminous transmittance possible for a specified chromaticity.
microphotometer
An instrument capable of measuring the transmitted or reflected luminance from a very small area seen under a microscope. Microphotometers are the fundamental tools of microphotometry and are also...
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...
modem
Modulator/demodulator. An electronic device that modulates and demodulates signals transmitted over communications lines.
modulated grating hologram
A computer-generated, phase-and-amplitude, off-axis hologram made by a multi-exposure technique that uses three computer generated transmission masks. Each mask controls one fixed-phase component of...
modulator
A modulator is a device or component that modifies a carrier signal in order to encode information for transmission over a communication channel. The process of modulating involves varying one or...
monochromatic filter
A filter that transmits a single spectral line emitted by a line source.
monochromatic illuminator
->
monochromator
A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of light. The term monochromator is derived from "monochromatic," meaning...
monochromator
A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of light. The term monochromator is derived from "monochromatic," meaning...
monoscope cathode-ray tube
A character generation CRT that functions on the principle of secondary emission. The target holds a set of aluminum characters, select characters being scanned by the electron beam. The secondary...
multimode group delay
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differential mode delay
Differential mode delay (DMD) is a parameter used to characterize the propagation characteristics of optical fibers, particularly in multimode fiber optic systems. It refers to the difference in...
Photonics Dictionary
M
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