Now showing items 11-20 of 137
Pulse shape tuning for 1064 nm nanosecond MOPA fibre laser
For a high power 1064 nm nanosecond MOPA pulse fibre laser, the seeding pulse shape is distorted after amplified by pre-amplifier and power-amplifier stages under the effect of gain saturation. As the pulse shape is crucial ...
Pixelated-core large pitch optical fibre design
This paper is reporting design and simulation of a pixelated-core large pitch optical fibre. With this new design, existence of higher order modes, mode instability at high power levels, mode shrinking and gain reduction ...
Programmable Fiber-based in-band OSNR Monitoring for Flexgrid Coherent Optical Communication System
With the rapid development of ultra-dense large capacity coherent WDM optical communication networks, the monitoring of in-band optical signal-to-noise ratio (OSNR) plays an essential role to ensure signal qualities. ...
Terabit WSDM Optical Access Network Using Multicore Fibers and Advanced Modulation Formats
We proposed a hybrid wavelength-space division multiplexing (WSDM) optical access network architecture utilizing multicore fibers (MCFs) with advanced modulation formats. As a proof of concept, we experimentally demonstrated ...
Fano resonance enhanced surface plasmon resonance sensors operating in near-infrared
In the phase-sensitivity-based surface plasmon resonance (SPR) sensing scheme, the highest phase jump usually happens at the darkness or quasi-darkness reflection point, which results in low power for detection. To overcome ...
64 Core ultra dense multicore fiber design for optical fronthaul systems
To make the most of spatial efficiency, we design 64-core trench-assisted multi-core fiber with the maximum crosstalk less than -14dB/20km, which is appropriate for the optical wireless fronthaul systems with inherent MIMO ...
Efficient edge coupler for higher order mode fiber-to-chip coupling
An edge coupler composed of two tapered waveguides and a Y-branch for LP11-TE1 mode coupling and mapping is proposed on silicon-on-insulator platform. An average 3 dB coupling loss can be acquired within 100 nm bandwidth.
A passively mode-locked erbium-doped fiber laser based on a single-wall carbon nanotube polymer
We demonstrate a simple, compact and low-cost mode-locked erbium-doped fiber laser (EDFL) using a single-wall carbon nanotube (SWCNT) poly-ethylene oxide (PEO) composite as a passive saturable absorber (SA). The composite ...
Highly sensitive strain sensor based on helical structure combined with Mach-Zehnder interferometer in multicore fiber
Optical fiber sensors for strain measurement have been playing important roles in structural health monitoring for buildings, tunnels, pipelines, aircrafts, and so on. A highly sensitive strain sensor based on helical ...
M-OTDR sensing system based on 3D encoded microstructures
In this work, a quasi-distributed sensing scheme named as microstructured OTDR (M-OTDR) by introducing ultra-weak microstructures along the fiber is proposed. Owing to its relative higher reflectivity compared with the ...