Dual Concentric-Ring-Core Fiber With Four Zero-Dispersion Wavelengths for Bey…

Orbital angular momentum (OAM) beams, featuring with unique spatial field distributions, have been extensively investigated and applied into a wide range of fields. In most applications, OAM beams …

Highly Dispersive Optical Fiber for Orbital Angular Momentum Modes

Orbital angular momentum (OAM) modes, featured by the unique properties of the helical phase front and annular intensity profile, have shown enormous potential for a wide range of applications. Opt…

InGaAsP/InP Geiger-Mode Avalanche Photodiode Towards Sub-kHz Dark Count Rate …

Geiger-mode InGaAsP/InP single photon avalanche photodiode (SPAD) with a low dark count rate (DCR) of 870 Hz at a photon detection efficiency (PDE) of 20% at 1064 nm is achieved for a 40 micron dia…

The Noise Lower-Bound of Rayleigh-Scattering-Pattern-Based Distributed Acoust…

As a Rayleigh-scattering-pattern-based distributed sensing scheme, recently coherent optical time-domain reflectometry (COTDR) exhibits high performance in distributed acoustic sensing, particularl…

Multi-Ring-Air-Core Fiber Supporting Numerous Radially Fundamental OAM Modes

Orbital angular momentum (OAM) multiplexing technology is expected as one of the prospective candidates for sustaining the further increment of data-transmission capacity in the optical communicati…

Highly Dispersive Germanium-Doped Coupled Ring-Core Fiber for Vortex Modes

In this work, we propose and design a germanium-doped highly dispersive coupled ring-core fiber (HD-CRF) with two concentric high-index rings for vortex modes. By using a full-vector finite-element…

Distributed Optical Fiber Sensing Assisted by Optical Communication Techniques

The development of optical fiber technology has facilitated the technological innovation in optical fiber communication and sensing systems over the past decades. Among all the fiber sensing techno…

On-Chip Mode-Division Multiplexing Transmission With Modal Crosstalk Mitigati…

We experimentally demonstrate on-chip modal crosstalk mitigation over two mode-division multiplexing (MDM) integrated circuits supporting four and eleven waveguide modes employing low-coherence mat…

Investigation of the Temperature Compensation of FBGs Encapsulated with Diffe…

Effectively Reconfigure the Optical Circuit Switching Layer Topology in Data …