Architecture of Optical Fiber Loop for Efficient Optical Buffer and an Ultra-Fast Optical Switching Service

Optical data storage with fiber loop and ultra-fast optical switching with nonlinear optical loop mirror (NOLM) has been regarded as ideal all-optical processing devices, respectively. The Present article integrates these two devices to provide an efficient buffering-switching device in order to curb signal contention. Various limitations have been analyzed in utilizing the proposed device to obtain an error-free process for the maximum rounds of buffering circulations. The defects evaluated include various types of noises that cause intensity fluctuations in buffered and demultiplexed signals. Switching characteristics of the NOLM demultiplexer were analyzed. The BER vs received optical power with various loop recirculation for the buffering device and signal waveform for NOLM with negligible GVD and walk-off have been calculated. Due to the accumulation of noise from every loop of circulation, the BER increased proportionally with the number of recirculations. However, the simulated results displayed that the input signal is allowed to circulate within the buffer loop of up to one hundred rounds before being demultiplexed by the NOLM switch.