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bandwidth Dictionary Terms

bandwidth
The range of frequencies over which a particular instrument is designed to function within specified limits. See also fiber...
asynchronous transfer mode
A method of data multiplexing that can provide large, instantaneous bandwidths for busy traffic while permitting slow...
baseband
The simplest method of transmission on a local area network. The entire bandwidth of the cable is used to transmit a single...
noise equivalent power
At a given modulation frequency, wavelength, and for a given effective noise bandwidth, the radiant power that produces a...
MSM photodiode
A metal-semiconductor-metal (MSM) photodiode is a type of photodetector that consists of metal electrodes on a semiconductor...
single-walled carbon nanotubes
Referred to as SWCNTs, these cylindrical nanostructures composed of a folded sheet of graphene can be used as near-infrared...
optical fiber optic switches
Optical fiber optic switches are devices used in optical fiber communication systems to selectively route optical signals...
Camera Link HS
Camera Link HS (high speed) is a standard developed for high-speed digital data transmission in machine vision and...
pulse compression
A means of achieving higher peak powers and more efficient harmonic generation by narrowing the pulse width and thus...
bandwidth-limited operation
In fiber optics, the limitation on performance imposed by the system bandwidth rather than the amplitude of the signal.
plastic optical fiber
Plastic optical fiber (POF) is a type of optical fiber made from transparent plastic, typically polymethylmethacrylate...
femtosecond laser
A femtosecond laser is a type of laser that emits ultrashort pulses of light with durations on the order of femtoseconds,...
neuromorphic vision sensor
A neuromorphic vision sensor is a type of imaging device designed to mimic the structure and functioning of the human visual...
holographic grating
A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...
optical fiber
Optical fiber is a thin, flexible, transparent strand or filament made of glass or plastic used for transmitting light...
octave
In optics, an octave typically refers to a range of frequencies or wavelengths that spans a factor of 2. In other words,...
envelope delay distortion
Distortion caused by variations in the rate of change of phase shift with frequency over the signal's necessary bandwidth.
pulsed-dye laser
A laser with a gain medium consisting of an organic dye, which is carbon-based. The dye is mixed with a solvent, allowing...
fiber optic cable assembly
A fiber optic cable assembly refers to a complete unit consisting of optical fibers, connectors, protective jackets, and...
graded index
Descriptive of an optical fiber having a core refractive index that decreases almost parabolically and radially outward...
spectral bandwidth
The wavelength interval in which radiant intensity is at least 50 percent of the maximum spectral value.
partial coherence theory
Totally coherent radiation is produced by a purely monochromatic point source. In the real world the energy will have a...
power modulation
Power modulation refers to the intentional variation of power levels in a signal, often in the context of electronic...
gain-bandwidth product
In an avalanche photodiode, the gain multiplied by the signal frequency in MHz.
broadband
Indicating a capability to deal with a relatively wide spectral bandwidth.
electro-optic modulator
An electro-optic modulator (EOM) is a device used to modulate the amplitude, phase, or polarization of light waves using an...
GigE
GigE, short for gigabit Ethernet, refers to a standard for high-speed Ethernet communication, capable of transmitting data...
injection seeding
The use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a...
fiber bandwidth
The lowest frequency at which the magnitude of the fiber transfer function decreases to a specified fraction of the zero...
picosecond pulse
A pulse having extremely short duration, about 10-13 to 10-10 s, that is produced by mode locking of wide-bandwidth lasers,...
half bandwidth
The term half bandwidth (HBW) generally refers to the width of a spectral band or frequency range at half of its maximum...
video
Referring to the bandwidth and spectrum location of the signal produced by television or radar scanning.
grating monochromator
An optical instrument used to isolate a narrow bandwidth of optical radiation using a diffraction grating as the dispersive...
high-performance parallel interface
A very high bandwidth communication line often used in fiber optics.
terahertz
Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1...
optical filter
An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...
television bandwidth
The span of frequencies within which a single channel of broadcast television must fall; in the US, it is 6 MHz.
modified chemical vapor deposition
Modified chemical vapor deposition (MCVD) is a technique used in the fabrication of optical fibers. It is a specialized form...
finesse
For a Fabry-Perot interferometer or etalon, a value for the transmission bandwidth which can be calculated as the ratio of...
advanced compatible television
A television format with enhanced vertical resolution (400 lines as compared with the standard 330) that, unlike...
communicator bandwidth
The maximum rate at which temporally disjunct optical signals can be produced or detected.
channel density
The number of channels per unit bandwidth handled by a single optical fiber.
broadband filter
A broadband filter is an electronic or electromagnetic device designed to pass a range of frequencies or signals within a...
ultrashort-pulse laser
A laser capable of generating light pulses that last only a few femtoseconds. This can be achieved by nonlinear filtering to...
modulation bandwidth
The highest frequency at which a laser diode can be driven and still be modulated acceptably that further results in the...
distributed feedback laser
A distributed feedback laser (DFB laser) is a type of semiconductor laser diode designed to emit coherent, narrow-bandwidth...

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