To analyse and evaluate the physical layer performance of a U.K. national quantum network (UKQNtel) utilising COW-QKD, in O band, integrated with 500 Gb/s encrypted data, in C band, over 121 km bet…
The network architecture is crucial to shaping a new generation of cellular network. As the foundation of the system, the architecture implies what and how the network services are provided, as wel…
An Ultra-long adiabatic tapered single mode fiber (UATSMF) is proposed for the Rayleigh back-scattering enhancement and nonlinear suppression. Its Rayleigh back-scattering is enhanced by increasing…
The unique point of non-Hermitian degeneracy in an open system, known as exceptional point (EP), holds great potential in cavity quantum electrodynamics, optical signal processing, and sensing appl…
A cascade array structure and depleted layer thickness design method of uni-traveling-carrier photodetector (UTC-PD) for terahertz applications is proposed. The cascade array structure can increase…
In this paper, we propose a high-speed PIN photodiode with a composite absorption layer. It supports a 3-dB bandwidth of 43 GHz and can be used in 100 Gbit/s optical receivers. The composite absorp…
We report the phase shift of two types of photodetectors for a variation of bias voltage and optical power. One type is PIN-PD and the other is a modified uni-traveling carrier photodetector (MUTC-…