Optical communication lines

Abstract

The transmission of signals through parallel paths is a key aspect of modern communication lines, especially those involving the use of optical fibers. Spatial parallelism, a fundamental concept in this field, plays a crucial role in increasing the capacity and efficiency of fiber optic communication networks. By simultaneously transmitting signals through multiple spatial channels, spatial parallelism significantly enhances transmission speed and data throughput. This approach allows for the simultaneous utilization of different paths within the optical fiber, effectively increasing the available bandwidth and improving the overall network performance. Through careful analysis, it becomes evident that the parallel factor, representing the number of spatial channels created through multiplexing, is a key determinant for optimizing spectral efficiency and aggregate data transmission speed. It is emphasized that the role of spatial multiplexing is to efficiently and as uniformly as possible couple light from a bundle of single-mode fibers onto the cores of a multi-core fiber or the modes of a few-mode, multi-mode, or coherent-core fiber, and vice versa. In the case of multiplexing for single-mode multi-core or coherent fiber, the connection mechanism is straightforward, reflecting an array of single-mode input beams onto an array of single-mode output beams. The work provides insights into the role of spatial parallelism in modern optical fiber communication systems. It examines how transmitting signals through parallel paths enhances transmission speed and data throughput. The article quantitatively evaluates the contribution of spatial multiplexing to data transmission speed and spectral efficiency. It highlights the importance of spatial multiplexing techniques such as polarization, spectral, modal, and core multiplexing in optimizing network performance. Overall, the abstract emphasizes the significance of spatial parallelism in improving the efficiency and capacity of optical fiber communication networks.