Optical waveguide structures can make the state-of-the-art micro- and nanofabricated devices faster and less energy consuming. However, on-chip optical components must be placed at relatively large distances from each other, on the order of the wavelength 𝜆, to eliminate the. Abstract—This paper presents the results of a crosstalk anal-ysis of four optical wavelength division multiplexed (WDM) cross-connect (OXC) topologies. An optimal set of parameters is determined to reduce the total crosstalk. The scalability of the topologies is presented in terms of wavelengths. One promising method to increase the bit-rate capacity of optical fibers is the use of Multi-Core Fibers (MCFs). However, the close proximity of the cores can lead to data interference due to crosstalk between them. It is demonstrated that. Microring modulators have emerged as fundamental building blocks in silicon photonics, offering compact footprints, low power consumption, and high-speed modulation capabilities essential for modern optical communication systems. We put forward a scheme comprising double-stage semiconductor optical amplifiers (SOAs) for wavelength-preserving. An optical system which consists of a transmitter array, a fiber array, and a receiver array, experience some signal loss and crosstalk as the signals travel from the transmitter to the receiver. A crosstalk suppression of 14 dB is experimentally achieved by exploiting the gain contrast between received signal and transmitted-signal-induced crosstalk using selective phase-sensitive.