7 February 1989 Broadband, Isotropic, Photonic Electric-Field Meter For Measurements From 10 kHz To Above 1 GHz
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An isotropic, photonic electric-field meter (PEFM-15) having 15 cm resistively tapered dipole elements and Pockels effect electro-optic modulators is used to measure electric fields of 10 to 100 V/m from 10 kHz to beyond 1 GHz. The probe's frequency response is flat within ±3 dB from 30 kHz to 100 MHz except for a region between 1 and 10 MHz where acoustic resonances occur in the LiNbO3 modulator crystals. For a 3 kHz detection bandwidth, the noise equivalent field is approximately 7 V/m, thereby giving a calculated linear dynamic range of 68 dB in field power density. The probe's isotropic response is flat within ±2 dB, and the response of each dipole closely follows the curve predicted by theory. An optical-beam switch that connects the individual dipoles to a laser source and optical receiver is also described.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Keith D. Masterson, Keith D. Masterson, Lanny D. Driver, Lanny D. Driver, "Broadband, Isotropic, Photonic Electric-Field Meter For Measurements From 10 kHz To Above 1 GHz", Proc. SPIE 0987, High Bandwidth Analog Applications of Photonics II, (7 February 1989); doi: 10.1117/12.959699; https://doi.org/10.1117/12.959699


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