Protecting confidential high speed optical signal transmission at the lowest physical layer is
a critical challenge for modern fiber-optic communication systems. In this paper, we …

To guarantee information security from the lowest level of optical networks, it is essential to
provide physical layer security in fiber-optic communication systems. However, it is …

High capacity and low latency of optical connections are ideal for supporting current and
future communication services, including 5G and beyond. Although some of those services …

In this paper, a novel secure communication scheme based on temporal spreading and dual-
phase perturbation is proposed to improve security at the physical layer. For one thing, the …

We propose a novel all-optical encryption technique that shuffles spectral slices of multiple
wavelength-division multiplexing (WDM) channels. In particular, we investigate the …

We propose a novel digital signal processing (DSP) technique that encrypts multiple
baseband signals by dividing them into several spectral slices, which are then shuffled …

A recent proposed physical layer encryption technique uses an all-optical setup based on
spatial light modulators to split two or more wavelength division multiplexed (WDM) signals …

Point-to-multipoint architecture poses serious security problems to passive optical networks
(PONs). In this paper, we propose the use of a new digital signal processing (DSP)-based …

In this work, we propose a strategy for encrypting dual polarisation optical signals. The
scheme is based on shuffling the spectral samples of baseband signals that further …

Optical communication systems (OCSs) are prone to a myriad of security threats, such as
fiber cutting, tapping, and jamming. However, OCSs also provide appropriate conditions for …