All-optical frequency encoded 2-bit comparator using dibit-based logic and reflective semiconductor optical amplifier Online publication date: Mon, 24-Oct-2022
by Surajit Bosu; Baibaswata Bhattacharjee
International Journal of Nanoparticles (IJNP), Vol. 14, No. 2/3/4, 2022
Abstract: In the last decade, photon emerges as a transporter of information at ultra-high speed. This leads to optical devices attracting the attention of the research community. Therefore, researchers have developed different types of digital devices in the all-optical domain. In this paper, a design of a frequency encoded dibit-based 2-bit comparator is devised using reflective semiconductor optical amplifier (RSOA) and add/drop multiplexer (ADM). Encoding of a signal is necessary for long-range transmission. So we have adopted frequency encoding because it has been proven to be efficacious in long-range transmission. The dibit-based concept encourages a high degree of parallelism. The proposed design achieves the qualities such as high switching speed, low noise, high gain, and low power consumption because of RSOA. This design has been simulated in MATLAB (2018a) and the simulated outputs accurately compare the dibit-based 2-bit input data.
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