Space-division multiplexing for fiber-wireless communications

TL;DR

This paper explores optical space-division multiplexing (SDM) in fiber-wireless systems, proposing innovative fiber technologies to enhance capacity and enable adaptive radiofrequency-photonic interfaces for next-generation communications.

Contribution

It introduces two novel SDM fiber technologies: dispersion-engineered multicore fibers and multicavity devices with inscribed gratings, advancing fiber-distributed signal processing capabilities.

Findings

SDM fiber enables increased end-user capacity

Proposed fiber technologies support broadband microwave photonics

Fiber-distributed signal processing enhances fiber-wireless integration

Abstract

We envision the application of optical Space-division Multiplexing (SDM) to the next generation fiber-wireless communications as a firm candidate to increase the end user capacity and provide adaptive radiofrequency-photonic interfaces. This approach relies on the concept of fiber-distributed signal processing, where the SDM fiber provides not only radio access distribution but also broadband microwave photonics signal processing. In particular, we present two different SDM fiber technologies: dispersion-engineered heterogeneous multicore fiber links and multicavity devices built upon the selective inscription of gratings in homogeneous multicore fibers.