Optical Phase Shifters

Optical Phase Shifters

Optical phase shifters are devices that can modify the phase of an optical signal. The phase of an optical signal refers to the position of the peaks and troughs of the wave relative to a reference point. By changing the phase of the signal, it is possible to manipulate the way that the signal interacts with other optical devices, such as amplifiers, filters, and modulators. There are several different types of optical phase shifters, including electro-optic, acousto-optic, and magneto-optic devices. Electro-optic phase shifters use an electric field to change the refractive index of a material, which in turn changes the phase of the optical signal passing through it. Acousto-optic phase shifters use sound waves to create a periodic modulation in the refractive index of a material, which causes the phase of the optical signal to shift. Magneto-optic phase shifters use a magnetic field to change the polarization of the light, which can also change the phase of the signal. Optical phase shifters are used in a variety of applications, including in fiber optic communications, where they are used to compensate for changes in the length of the fiber due to temperature or mechanical stress. They are also used in interferometry, where they can be used to measure small changes in the phase of a signal caused by changes in the environment or the presence of a target. In summary, optical phase shifters are devices that can modify the phase of an optical signal, and they are used in a variety of applications in fiber optic communications, interferometry, and other areas of optics.

electro-optic, acousto-optic, magneto-optic, fiber optic communications, interferometry

— Christopher Green

CITATION : "Christopher Green. 'Optical Phase Shifters.' Design+Encyclopedia. https://design-encyclopedia.com/define/optical-phase-shifters?E=379376 (Accessed on October 13, 2026)"