A magnetic field sensor is proposed based on the combination of magnetic fluid (MF) and an optical microfiber mode interferometer (MMI). It is measured that the MMI is highly sensitive to ambient refractive index (RI) with ...

We report a highly sensitive fiber-optic sensor based on two cascaded intrinsic fiber Fabry-Perot interferometers (IFFPIs). The cascaded IFFPIs have different free spectral ranges (FSRs) and are formed by a short section ...

We demonstrate a new type of Mach-Zehnder interferometer by combining a nonadiabatic microtaper with a long period grating in the same stage of all solid photonic bandgap fibers. Meanwhile, the mode-coupling caused by the ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...