optical-龙8国际

optical-electric-field-sensor

概述

optical-electric-field-sensor

optical e-field sensors perform signal measurement including accurate measurement of electric field intensity distribution and broadband frequency, which were not possible under conventional methods. in addition to applications mostly in research and product development, optical e-field sensors are used for identifying and resolving the causes of emc problems.

产品资料下载

please refer to the next page for more information.

the oefs provides extremely accurate measurements of e-field strength distribution /signals, including wideband frequencies. this is possible because the technology uses almost no metal, lithium niobate wafers, an optical signal, and a measuring principle called "pockels effect", so the sensor is electrically "invisible" during measurements. the main uses of this instrument are for " research and development" and "investigation/measurements" of various emi related issues. now, major cost reductions can be achieved becaue the oefs validates various theories and simulated models of emc design during the design and modeling phase, both internal and external of the eut.

e-field strength distribution measurementst in the cabin of a car.

horiuchi et al., : comparisons of simulated and measured electric field distributions :icice trans.commun., vol.e90-b. no.9 september 2007

esd e-field waveform measurement(air discharge)

e-field strength distribution measurements in a microwave

fukushima : electromagneticanalysis and electric field intensity distributions in microwave oven., jemea symposium 2010

mimo antenna pattern measurements

mimo(2ch) antenna phase caracteristics

◆standard goods

・isotropic e‐field sensor head： measurements of the orthogonal 3 axis e‐field component.

sh‐03ex isotropic e‐field sensor head（high sensitivity type）

item	specification
frequency	100k～3ghｚ
e-field strength	0.002～100v/m
isotropy	±1db typ.
size	φ30㎜×90㎜
material	foam

sh‐10ex isotropic e‐field sensor head（broadband type）

item	specification
frequency	100k～10ghｚ
e-field strength	0.01～500v/m
isotropy	±1db typ.
size	φ40㎜×90㎜
material	form

・optical probe head：passively receives rf power from small antennas and modulates the rf into an optical signal.

item	model	specification
frequency	ph-0255	300k～2ghｚ
	ph-0455m	300k～4ghｚ
	ph-0655	300k～6ghｚ
loss	ph-0255	5db±5db typ.
	ph-0455m	10db±5db typ.
	ph-0655	15db±5db typ.
size(metal parts)	10ｘ10ｘ20mm

◆customized sensors

we welcome unique applications and requirements. custom specifications can be determined based on requirements.

・sh‐10el miniaturized isotropic e‐field sensor head

this is the isotropic optical e‐field sensor head for high e‐field measurements such as inside of the microwave

item	specification
frequency	100k～10ghｚ
e-field strength※	0.5～25000v/m
isotropy	±0.5db typ.
size	φ12㎜×80㎜
material	abs

※long period, high power cw radiation can damage the sensor.

・nld(noiseleak detector) head

ultra‐compact 1‐axis optical e‐field sensor head.

e‐field measurements in narrow/small spaces, such as inside a metal enclosure.

item	model	specification
frequency	100k～10ghｚ
e-field strength※	cs-1403	0.5～25,000v/m
	cs-1210	0.01～500v/m
size	6ｘ6ｘ24mm
material	acrylic resin

※long period, high power cw radiation can damage the sensor.

・optical voltage probe‐

because there is no currents or voltages used in the probes, exact waveforms can be measured . additionally, the probes can be used on circuit boards during esd testing, so actual waveforms can be witnessed and esd can be traced through a system.