Numerical analysis of the performance of a Mach–Zehnder interferometer based on acousto-optic filter for signal regeneration

• Published in: Optical and quantum electronics 2020-05, Vol.52 (5), Article 264
• Main Authors: de Sousa, Fabio B., de Sousa, Fiterlinge M., de Oliveira, Jorge E., Paschoal, Waldomiro, Costa, Marcos B. C.
• Format: Article
• Language: English
• Subjects: Acousto-optics; Characterization and Evaluation of Materials; Communications systems; Computer Communication Networks; Computer simulation; Crystal fibers; Electrical Engineering; Figure of merit; Four-wave mixing; Lasers; Mach-Zehnder interferometers; Numerical analysis; Optical Devices; Optics; Photonic crystals; Photonics; Physics; Physics and Astronomy; Q factors; Regeneration; Schrodinger equation
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-020-02389-3

In this work we performed a numerical analysis of the performance of an all-optical 3R regenerator based on four wave mixing through a communication system Mach–Zehnder interferometer (MZI) with acousto-optic filter (AOF) and photonic crystal fiber. The frequency difference between the input signal and the pump was used as a figure of merit for comparing minimum bit-error-rate (min. BER), maximum quality factor (max. Q-factor) and optical spectrum results. In this case the non-linear Schrödinger equation was solved by the split step Fourier method. Simulation and performance analysis of the 3R-MZI-AOF regenerator were performed using OptiSystem software for systems with different frequency spacings. Therefore, with the 3R regeneration proposed here, a significant improvement in system performance was achieved, where max. Q-factor was equal to 9 and min. BER was equal to 1 × 10 −19 for the 600 GHz frequency spacing and 10 Gb/s transmission rate.