All-Optical Regenerative OTDM Add-Drop Multiplexing at 40 Gb/s using Monolithic InP Mach-Zehnder Interferometer

摘要

We present a novel method for all-optical add/drop multiplexing having regenerative capability for 40 Gbit/s optical time-division multiplexed (OTDM) data using a semiconductor optical amplifier (SOA) based, monolithic Mach-Zehnder interferometer. Simultaneous dropping of one 10 Gbit/s channel out of 40 Gbit/s OTDM data and perfect clearing of the corresponding time slot in the remaining 3x10 Gbit/s data stream is demonstrated. Bit error rate measurements shov a low penalty of 2 dB for each 10 Gbit/s channel. No extra penalty was observed introducing a 10 Gbit/s add channel through the device into the cleared time slot.