Analysis of OTDM data for high speed all optical shift register

All-optical shift register is the fundamental of building modules in order to develop the ultra-high speed optical time division network. This work shows the progresses that have been made, focusing on employing of semiconductor optical amplifier (SOA) to produce the all-optical shift register at a higher data rate. Using high-speed signal causes the shift register to partially work due to the limitation imposes by the SOA. Its bandwidth is further dropped if optic-electronic-optic conversions exist in the system. Optical time division multiplexing (OTDM) is introduced as a technique to improve this limitation thus increases data transmission and also its switching capability. In this paper, we analyze the behavior of the optical shift register base on the SOA's injection currents and input powers of the OTDM channels. The analysis is conducted by varying these two parameters while observing the best output from the shift register. Alternating block of pulses `zeros' and `ones' are measured and analyzed with the optimum number of OTDM channels. The highest data speed is recorded at 100 Gb/s.