Abstract
We propose a -codoped step index multimode (SIMM) fiber having a core diameter of around with numerical aperture of around 0.21–0.22. The proposed SIMM fiber shows excellent linear radiation response behavior with sensitivity of around at a wavelength within the dose rate range of , as well as very low recovery at room temperature using a gamma radiation source. This enables its practical application in fiber optic personal dosimeters for measurement of low dose gamma radiation.
© 2011 Optical Society of America
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