A green annular beam preheats copper while an infrared center beam melts it, improving weld quality with independent wavelength and power control.
Marker-first alignment lets multi-core fibers be rotated and translated precisely before core matching and fusion splicing.
A concentric center-and-ring laser beam with multi-wavelength output stabilizes penetration and reduces spatter and porosity in welding.
A dual-density laser beam heats spatter roots on coated workpieces to limit adhesion and preserve pierced-hole quality.
A periodic fibre-squeezing mechanism varies beam quality on demand, improving laser cutting speed and edge roughness across metal thicknesses.
A dual-core fiber combines bright and broad laser modes to cut and weld thick materials with less seam hardening, deformation, and cleaner cuts.
A concentric center-and-ring laser beam with wavelength spread stabilizes the melt pool and reduces porosity, spatter, and seam irregularity.
Independent center and annular beam ramping controls keyhole contraction and cooling to prevent weld-end cracking in high-strength alloys.
Independent center and annular beam ramping prolongs keyhole contraction and anneals the weld end to prevent cracking in high-strength alloys.
Adjacent cores use different refractive indexes and controlled halogen ratios to cut crosstalk while keeping 1550 nm loss highly uniform.
Shared trench regions in the cladding isolate densely packed cores, cutting crosstalk while preserving mode field diameter and core density.
Adiabatic tapering of waveguide spacing and core width cuts insertion loss and undesired mode radiation while supporting broader-band optical coupling.
Rotational fiber holders and butt-coupling shorten multi-core optical fiber measurement by avoiding fusion splicing while maintaining alignment.
Adiabatic tapering of waveguide spacing and core width cuts free-space and undesired-mode loss, enabling broader bandwidth and higher-Q resonators.
An asymmetric cladding with different surface curvatures improves side-view rotational alignment and suppresses spherical aberration.
By joining rectangular optical fibers with sub-diameter core spacing, this case enables uniform multi-line illumination with low light leakage.
Quadrant relocation of mixed-index fiber elements balances thermal expansion, reducing bowing, noise, and image sharpness variation.
Larger-core lead-in fibers relax alignment tolerances while small-core sensing fibers retain bend insensitivity and single-mode operation.
Separate output and input ports measure backscattered light across multicore-fiber cores, avoiding coupler leakage and signal mixing.
Separate output and input ports remove directional-coupler leakage, enabling precise crosstalk measurements across multicore optical fibers.
Orthogonal deformation correction portions help a multicore fiber retain a circular cross-section while improving PMD characteristics.
This optical measurement approach uses modulation and paired detection to exclude output-member loss from multi-core measurements.
A multicore fiber uses a low refractive index portion in the cladding to enhance mode coupling among closely spaced cores.
A multi-core optical fiber uses a trench-type refractive index distribution to confine light within individual cores.
Optimized core geometry and tapered combiner maximize pump absorption while minimizing crosstalk in space-division multiplexing networks.
Asymmetric core spacing prevents crosstalk accumulation in multicore fibers, enabling higher capacity without complex real-time control systems.
Spacing control between beam source and multicore optical fiber compensates lensing effect variations across core regions.
Intermediary multimode fibers position sensor bulk away from cover glass, reducing optical crosstalk while maintaining measurement precision.