IQ Modulator Series: What is a Optical modulator?
Optical modulator?are often used to manipulate the properties of light beams, such as laser beams. The device can manipulate the properties of the beam, such as optical power or phase. Modulator according to the nature of the modulated beam is called?intensity modulator,?phase modulator, polarization modulator, spatial Optical modulator, etc. Different types of modulators can be used in different applications, such as fiber optic communications, display devices, Q-switched or mode-locked lasers, and optical measurement.
Optical modulator type
There are several different types of modulators:
1. Acousto-optic modulator is a modulator based on acousto-optic effect. They are used to switch or continuously adjust the amplitude of the laser beam, change the light frequency, or change the direction of space.
2. The?electro-optic modulator?utilizes the electro-optic effect in the bubble Kerrs box. They can modulate the polarization state, phase, or beam power, or be used for pulse extraction as mentioned in the section on ultrashort pulse amplifiers.
3. An electrical absorption modulator is an intensity modulator used on a data transmitter in optical fiber communication.
4. Interference modulators, such as Mach-Zehnder modulators, are usually used in photonic integrated circuits for optical data transmission.
5. Fiber optic modulators can be based on a variety of principles. It can be a true fiber optic device, or it can be a body component containing fiber pigtails.
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