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Mode division multiplexing (MDM) has the potential of increasing the capacity of optical fiber transmission system. However, primary impaired factor mode-dependent loss (MDL) poses fundamental performance limitations. Recently MIMO space time coding technique has provided a potential solution to mitigate the MDL and hence started receiving considerable interests. In this paper, orthogonal space time...
We experimentally demonstrate simultaneous selective detection of xylene and trichloroethylene using photonic crystal waveguide. Sensitivity is improved by slow light effect of PC to 1ppb (v/v) for xylene and 10ppb (v/v) for TCE in water.
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