A new non-disturbing photonic for measuring electromagnetic (EM) power is presented. The sensing element is made of a silicon Fabry-Perot optical microcavity connected to an optical fiber for remote interrogation. Preliminary measurements have been carried out in a non-optimized prototype in the frequency range 2-18 GHz. They have shown the capability to detect minimum EM power densities of approximately 1.4 mW/cm 2, and a flat response at frequencies greater than 10 GHz. A proper calibration makes the sensor useful as an E-field probe. In this case, resolutions as low as 8 V/m have been measured. A simple theoretical analysis giving results in fair agreement with the experiments is also reported. Simulations show that wide margins of optimizations of the sensor exist.
New non-disturbing and wideband optical microsensor of electromagnetic fields
Rendina;
2000
Abstract
A new non-disturbing photonic for measuring electromagnetic (EM) power is presented. The sensing element is made of a silicon Fabry-Perot optical microcavity connected to an optical fiber for remote interrogation. Preliminary measurements have been carried out in a non-optimized prototype in the frequency range 2-18 GHz. They have shown the capability to detect minimum EM power densities of approximately 1.4 mW/cm 2, and a flat response at frequencies greater than 10 GHz. A proper calibration makes the sensor useful as an E-field probe. In this case, resolutions as low as 8 V/m have been measured. A simple theoretical analysis giving results in fair agreement with the experiments is also reported. Simulations show that wide margins of optimizations of the sensor exist.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
