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optical communications Dictionary Terms

phase
In optics and photonics, "phase" refers to a property of electromagnetic waves, such as light, that describes the position...
receiver
A detector and signal demodulator used in optical communications systems to receive a signal and often to translate it into...
nonlinear optics
Nonlinear optics is a branch of optics that studies the optical phenomena that occur when intense light interacts with a...
lattice
In photonics, a lattice refers to a periodic arrangement of optical elements or structures, often on a microscopic or...
local oscillator laser
In coherent optical communications systems, a laser used at the receiving end to produce a steady wave that is combined with...
quantum noise
Noise generated within an optical communications system link that has both internal (dark current) and external (background...
mode-locked lasers
Mode-locking is a technique used in lasers to produce ultrashort pulses of light with durations on the order of picoseconds,...
averaged threshold receiver
A receiver for optical communications systems consisting of a symmetric binary, pulse-code-modulated transmitter, a...
femtosecond laser
A femtosecond laser is a type of laser that emits ultrashort pulses of light with durations on the order of femtoseconds,...
Kerr soliton
A Kerr soliton refers to a specific type of soliton, a self-reinforcing wave packet, that arises in nonlinear optical...
heterodyning
In optical communications, the translation of optical signals into radio signals, lowering their frequency in detection from...
microphotonics
The technology of manipulating light on a micro scale. In optical communications, this is usually accomplished using two or...
optical filter
An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...
holographic grating
A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...
Risley prism
A Risley prism, also known as a Risley prism pair or Risley rotating prism, is an optical device used for controlling the...
photodiode detector
A photodiode detector is a semiconductor device that converts light into an electrical current. It operates based on the...
diffraction grating
A diffraction grating is an optical component consisting of a surface with a periodic structure of equally spaced, parallel...
photonic crystal surface-emitting laser
A photonic crystal surface-emitting laser (PCSEL) refers to a type of laser diode that emits light from its surface rather...
optical communications
The transmission and reception of information by optical devices and sensors.
Bragg grating
A filter that separates light into many colors via Bragg's law. Generally refers to a fiber Bragg grating used in optical...
microlens array
A microlens array is a grid-like structure composed of numerous small lenses, typically arranged in a regular pattern. Each...
microcomb
A microcomb, short for microresonator frequency comb, is a novel photonic device that generates a precise series of evenly...

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