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An ytterbium-doped mode-locked fiber laser with a microfiber-based graphene saturable absorber (GSA) was proposed. By controlling cavity parameters such as pump power level and orientations of PCs, both multiple polarization locked vector solitons (PLVSs) and polarization rotation vector solitons (PRVSs) were investigated.
Compressive sensing (CS) is a novel technology for sparse signal acquisition with sub-Nyquist sampling rate but with relative high resolution. Photonics-assisted CS has attracted much attention recently due the benefit of wide bandwidth provided by photonics. This paper discusses the approaches to realizing photonics-assisted CS.
We propose a kind of heterogeneous trench-assisted graded-index few-mode multi-core fiber (Hetero-TA-GI-FM-MCF). For each core in the fiber, absolute value of differential mode delay (| DMD |) can be smaller than 100 ps/km over C+L bands.
Slot photonic crystal cavities are of great interest for their advantages of small footprint as well as pretty high quality factors and large (Q/V) factors. A series of slot photonic crystal heterostructure cavities with resonant wavelengths in the range 1.3 µm - 1.6 µm has been designed and fabricated with Q of tens of 10000 and (Q/V) reaching 800 000. These works open perspectives for on-chip nonlinear...
High-efficiency wavelength conversion based on the quasi-phase-matching technique is proposed and simulated in a slot waveguide. Benefit from the tight light confinement and the high nonlinear material (silicon nanocrystal) filled in the slot region, a large nonlinear coefficient is achieved. With the linear phase-mismatch alternately changing between two values of the opposite signs, periodical attenuation...
Soliton self-frequency shift (SSFS) is a highly versatile technology for generating femotosecond pulses with broadband wavelength tunability. Here we review our recent progress in utilizing SSFS for various modalities of multiphoton microscopy, including both fluorescence microscopy and harmonic generation microscopy.
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