Publications de Sida Xing | EPFL Graph Search

Development of coherent mid-infrared source using chalcogenide photonic crystal fibers

Many molecule bonds have vibration frequencies in the mid-infrared band. Thus, this band is of great interest to molecular spectroscopy, material processing and medical applications. However, many optical materials typically used for laser sources experien ...

EPFL2019

Linearly chirped mid-infrared supercontinuum in all-normal-dispersion chalcogenide photonic crystal fibers

Camille Sophie Brès, Jianqi Hu, Svyatoslav Kharitonov, Sida Xing

2018

Fiber fuse in chalcogenide photonic crystal fibers

Camille Sophie Brès, Jianqi Hu, Svyatoslav Kharitonov, Sida Xing

We observe fiber fuse in tapered GeAsSe photonic crystal fibers (PCF) at around 7 MW∕cm2 of intra-core intensity. Vertically cleaved facets from the un-tapered regions and the tapered regions were imaged. The images show shallow voids of different shapes c ...

2018

Stable 2.1 μm near 100% polarized Ho-doped all-fiber laser based on a polarizer-free cavity scheme

Camille Sophie Brès, Davide Grassani, Jianqi Hu, Svyatoslav Kharitonov, Sida Xing

A highly polarized Ho-doped truly all-fibre laser was demonstrated without in-cavity polarizer. Utilizing PM-FBG and loop mirror, maximum 0.5W output power with 30% slope efficiency, 70dB ASE suppression and 99.997% degree of polarization was recorded at 2 ...

2017

Mid-infrared continuous-wave parametric amplification in chalcogenide microstructured fibers

Camille Sophie Brès, Davide Grassani, Svyatoslav Kharitonov, Sida Xing

The persistent growth of interest in the middle infrared (MIR) is stimulating the development of sources and components. Novel waveguides and fibers for the efficient use of nonlinear effects in the MIR are being intensively studied. Highly nonlinear silic ...

2017

Narrow linewidth polarizer-free 2.1μm Ho-doped fiber laser with 45dB polarization extinction ratio

Camille Sophie Brès, Davide Grassani, Sida Xing

2017

MIR supercontinuum in all-normal dispersion Chalcogenide photonic crystal fibers pumped with 2μm femtosecond laser

Camille Sophie Brès, Davide Grassani, Jianqi Hu, Svyatoslav Kharitonov, Sida Xing

We demonstrate mid-infrared supercontinuum generation in an all-normal dispersion Chalcogenide PCF pumped by fiber laser. The -20dB bandwidth is 1.7~2.7μm dominated by self-phase modulation and optical wave breaking. Tapering is proposed to improve perform ...

OSA2017

Broadband Dispersion Characterization of Chalcogenide Tapered Photonic Crystal Fiber

Camille Sophie Brès, Svyatoslav Kharitonov, Sida Xing

Group-velocity dispersion of birefringent GeAsSe tapered PCF is directly measured over 1900-2300nm range using all-fiber Mach-Zehnder interferometer. We experimentally prove that zero-dispersion wavelength of chalcogenide PCFs can be shifted to thulium/hol ...

2017

All-fibered chalcogenide based continuous-wave parametric amplification in the mid-infrared

Camille Sophie Brès, Davide Grassani, Svyatoslav Kharitonov, Sida Xing

We demonstrate parametric amplification around 2 μm in a dispersion engineered tapered microstructured chalcogenide fiber. Almost 5 dB of signal amplification was achieved by 125 mW coupled power from a thulium-doped fiber pump laser. ...

OSA Publishing2017

Generation of high-brightness spectrally flat supercontinuum in 1900-2450 nm range inside a small core thulium-doped fiber amplifier

Camille Sophie Brès, Davide Grassani, Svyatoslav Kharitonov, Sida Xing, Thibault Emmanuel North

We demonstrate the generation of high-brightness supercontinuum inside thuliumdoped fiber amplifier in 1950-2450nm spectral range with 1.7W output power and 32% slope efficiency, seeded by tunable 2000nm mode-locked laser and assisted by 3H4-3H5/3F4-3H6 th ...

OSA Publishing2016