All-optical format conversion from inverse-return-to-zero to non-return-to-zero using a mach-zehnder delay interferometer

All-optical format conversion from inverse-returnto-zero (inverse-RZ) to non-return-to-zero (NRZ) Is realized by using a half-bit-delay Mach-Zehnder delay interferometer. Experimental results demonstrate that the converted NRZ signal has better receiver sensitivity than the back-to-back inverse-RZ Signal.