Abstract
We propose an ultrasensitive ion sensor based on black phosphorus coated 81º-tilted fiber grating for Pb2+ ion detection, demonstrating significant performance of ultrahigh sensitivity (8.6×10−5dB/ppb), lower detection limit (0.4ppb) and wider concentration range (0.1ppb ~1.5×107ppb).
© 2017 Optical Society of America
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