Noncarrier　injection　(NCI)　mode　is　an　emerging　driving　mode　for　nanoscale　light-emitting　diodes　(LEDs).　Here,　we　demonstrate　that　a　single　light　pulse　from　NCI-LEDs　can　be　split　into　multiple　pulses　with　small　pulse　widths　that　cannot　be　obtained　by　using　traditional　driving　technology.　Light-pulse　splitting　is　achieved　by　using　a　combined　signal　that　is　a　superposition　of　a　basic　signal　and　a　signal　with　small　amplitude　and　high　frequency.　Theoretical　equations　regarding　the　conduction　current　and　current-pulse　splitting　are　provided　to　explain　light-pulse　splitting　theoretically.　Then,　light-pulse　splitting　is　experimentally　proven　with　a　capacitor-LED-capacitor　construction　that　is　used　to　simulate　the　luminescence　in　NCI　mode　physically.　Finally,　we　demonstrate　light-pulse　splitting　from　nanorod　GaN-LEDs　and　discuss　the　working　mechanisms　related　to　electron　multiple-frequency　oscillation.　This　work　can　deepen　the　understanding　of　the　NCI　mode　and　provides　a　potential　approach　for　advanced　light-pulse-based　technology.　©　1980-2012　IEEE.