An optical network consists of multiple nodes interconnected via optical fibers. A laser beam is used to carry digital data between adjacent nodes.
Laser
A laser is a device that emits coherent monochromatic light at a single wavelength. Lasers emit electromagnetic radiation at a specific wavelength within the visible spectrum.
Modulator
A modulator is a device that changes the amplitude, phase, or polarization of a continuous waveform. In other words, it alters the intensity of the output light.
Photodetector
A photodetector is a device that detects the presence of photons. It measures how much power is reflected from the surface of the detector.
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