Mikrovalokenttäanturi

Mikrovalokenttäanturi, also known as a micro-optical field sensor, is a type of optical sensor designed to detect and measure electromagnetic fields in the microwave frequency range. These sensors typically utilize semiconductor materials or photonic crystals to interact with the microwave radiation. When exposed to a microwave field, the material undergoes a change in its optical properties, such as refractive index or absorption, which can then be detected by a probing light beam.

The principle of operation often involves a change in the electronic band structure of the sensing material due to the applied microwave field. This change influences how light propagates through or is absorbed by the material. By measuring the modulation of the transmitted or reflected light, the strength and characteristics of the microwave field can be inferred. These sensors are often miniaturized, allowing for integration into various devices and systems.

Applications for mikrovalokenttäanturi are found in areas requiring non-invasive and sensitive detection of microwave radiation. This can include electromagnetic compatibility (EMC) testing, where precise measurement of electromagnetic emissions is crucial. They can also be used in scientific research for studying microwave-field interactions or in telecommunications for monitoring signal strengths. Their small size and potential for high sensitivity make them attractive for specialized sensing tasks where traditional detection methods might be bulky or impractical. Development continues to improve their performance in terms of bandwidth, sensitivity, and operating range.