Now showing items 11-20 of 132
Improved location algorithm for multiple intrusions in distributed Sagnac fiber sensing system
An improved algorithm named “twice-FFT” for multi-point intrusion location in distributed Sagnac sensing system is proposed and demonstrated. To find the null-frequencies more accurately and efficiently, a second FFT is ...
Refractive index sensor based on θ-shaped microfiber resonator and Vernier effect
A compact refractive index (RI) sensing probe with controllable sensitivities based on a θ-shaped microfiber resonator and Vernier effect is reported. By cascading the θ-shaped microfiber resonator with a fiber Fabry-Perot ...
Programmable bandwidth-variable optical temporal differentiator based on linearly chirped fiber bragg grating and digital thermal controller
We experimentally demonstrate an all-fiber structured bandwidth variable second-order optical temporal differentiator based on linearly chirped fiber Bragg grating and digital thermal controller. The bandwidth can be ...
Single-wall carbon nanotubes and graphene oxide-based saturable absorbers for low phase noise mode-locked fiber lasers
Low phase noise mode-locked fiber laser finds important applications in telecommunication, ultrafast sciences, material science, and biology, etc. In this paper, two types of carbon nano-materials, i.e. single-wall carbon ...
Low-timing-jitter mode-locked fiber laser based on graphene oxide pva thin film as saturable absorber
We demonstrate a mode-locked fiber laser based on graphene oxide saturable absorber at 1550nm. The laser has a timing jitter of 53fs (100Hz to 100kHz). The contribution from the slow saturable absorber is also investigated.
Design of plasmonic nanopore platforms for single-molecule detection
In this letter, we proposed and numerically demonstrated a novel plasmonic nanopore platform for single-molecule detection. Bowtie nanoantennas and photonic cavities were studied to obtain Raman enhancement at single-molecule ...
Using nonlinear optical networks for optimization: primer of the ant colony algorithm
Using nonlinear Erbium doped optical fiber network we have implemented an optimization algorithm for the famous problem of finding the shortest path on the map for the ant colony to travel to the foraging area.
Sensitivity-controllable refractive index sensor based on reflective θ-shaped microfiber resonator cooperated with Vernier effect
In this paper, we report a sensitivity-controllable refractive index (RI) sensor based on a reflective θ-shaped microfiber resonator cooperated with Vernier effect. The θ-shaped microfiber resonator is a reflective all-fiber ...
Application of coupled optoelectronic oscillator on optical sampling
A coupled optoelectronic oscillator (COEO) with a polarization-maintaining-fiber based laser cavity is constructed and demonstrated. The mode-locking process and the interaction between the intra cavity power and dispersion ...
Investigation of temperature sensitivity under the influence of coupling strength between a silica core and a satellite waveguide in a photonic crystal fiber with selective infiltration of glycerin
In this report, we carry out simulation and experimental investigations of directional coupler structures with different separations between the glycerin selectively infiltrated channel and silica core of a large mode area ...