Definition of slot modulator

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Photonics Dictionary

slot modulator: In photonics, a slot modulator refers to a type of optical modulator that operates based on the principle of modifying the optical properties of a slot waveguide.

A slot modulator is an optical device where modulation of light occurs through changes in the properties of a slot waveguide. The slot waveguide typically consists of a nanoscale gap between two closely spaced dielectric materials, such as semiconductors or insulators. By applying an external electric field or by varying the refractive index in this slot region, the device can modulate the phase, amplitude, or polarization of light passing through it.

Slot modulators are particularly significant in integrated photonics due to their potential for compact size, low power consumption, and high-speed operation. They find applications in telecommunications, optical data processing, and sensing technologies where precise control and modulation of light are crucial.

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