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Electromagnetically induced transparency is observed in rubidium-filled kagome structure hollow-core PCF with polymer-coated core. We show that the 6 MHz transparency linewidth is below that expected from a bare fiber.
Microscopic density characterization of transparent material with depth resolution is achieved with four-wave mixing microscopy. The density change inside a bent optical fiber with a curvature radius of 3.4 mm is successfully detected.
We have proposed a new kind of ultra-narrow dual-bandpass fiber Bragg gratings. Based on the proposed grating, an ultra-narrow dual-channel filter is designed. Our filter has the same bandwidth and the even strength, as well as the ultra-narrow bandwidth as small as <1 pm.
We report the characteristics of a wavelength swept laser with a scanning fiber Fabry-Perot filter in the 1300 nm. We investigate the dependence of the scanning frequencies of the conventional and Fourier domain mode-locked (FDML) wavelength swept laser. In the FDML swept laser, the transient intensity profiles and the tuning bandwidths were investigated according to the injection currents and detuning...
We demonstrate a pair of strongly-coupled, stacked monolithic silicon nitride microdisk resonators coupled to a tapered optical fiber. High-frequency optomechanical interactions between the two microdisks are induced by both optical force and photothermal effects.
We demonstrate the observation of saturated absorption in several molecules in HC-PBFs. Characteristics of these molecular reference lines are discussed and the locking of fiber lasers to the molecular absorption lines is demonstrated.
We show that gap solitons self-average fluctuations in random gratings. The soliton trapping inside the grating is explained. The correlation functions of the force and the potential acting on the gap soliton are found.
An all-fiber capillary electrophoresis system is presented. It enables sensitive in-line electrophoresis separation and fluorescence detection. As a proof of concept, a biological sample (FITC-BSA) is electrokinetically separated and analyzed.
We present an all-fiberreg pump combiner with 32 ports. This device is designed to provide high isolation providing intrinsic pump protection. We demonstrated that over 200 W of pump power can be deliver in 20/400 mum fiber.
We demonstrate a three-fold phase accuracy improvement in optical pulse reconstruction based on Hilbert transform temporal interferometry using a feedback-control for minimizing the phase errors associated with instabilities in the fiber-based interferometer.
We examine the properties of a new type of hollow-core fiber with a rib-waveguide geometry. Based on photonic band-gap fibers, these new designs offer intriguing possibilities for gas and liquid sensing.
A powder-filling technique was used to fabricate a variety of biodegradable microstructured polymer optical fibers using poly(epsiv-caprolactone) and cellulose derivatives. These fibers hold potential for light delivery and sensing.
We report on all-fiber coherent combining of 1.55 mum Er-doped single mode amplifiers achieved by means of active phase control that specifically employs the refractive index changes in Yb-doped fiber induced by 980 nm laser diode.
We generate radially polarised beams, attractive for many scientific and technological applications, as stable eigenmodes in an optical fiber. This yields a new class of fibers that are polarization-maintaining even though they are strictly cylindrically symmetric.
We report a novel fibre taper facility that allows tapering in the intermediate range of lengths of both standard and microstructured optical fibres. In particular, we examine issues related to the diameter fluctuations during tapering.
The transmission performances of a novel high numerical aperture polymer made multimode fiber are presented. The suspended core structure offers a low propagation loss in the visible and enables microfluidic capabilities.
We propose the use of large bandwidth mid-IR supercontinuum coupled with machine learning algorithms could provide a solution to non-invasive glucose detection. The SC uses millimeters of non-linear optical fiber, lowering costs and enhancing compactness.
We investigate the potential of four-wave mixing for VUV pulse generation in hollow waveguides with unprecedented short pulse durations and predict the generation of a 2.5 fs pulse at 160 nm using a 10 fs, 800 nm idler.
We present a technique for improving the pulse-delay performance of stimulated Brillouin scattering (SBS) based slow-light system by combining it with a fiber Bragg grating (FBG) under distortion and system resource constraints.
We report a novel mechanism of localization and frequency up-conversion of light pulses with spectra in the normal GVD range of optical fibres, due to the inertial force acting on pulses from the accelerating solitons.
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