Patent
Radially non uniform and azimuthally asymmetric optical waveguide fiber
TLDR
In this article, a single mode waveguide and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core are presented.Abstract:
Disclosed are a single mode waveguide fiber and a multimode waveguide fiber which have a radially non-uniform and azimuthally asymmetric core, and methods of making such a waveguide fiber. This asymmetry provides additional degrees of freedom for use in forming a waveguide having particular performance characteristics.read more
Citations
More filters
Patent
Polarisation preserving optical fibre
TL;DR: A micro-structured optical fiber has a cladding comprising a number of elements having a non-circular cross-section, each element has at least one part extending outside a circle having the same cross-sectional area as the element as discussed by the authors.
Patent
Optical fibre filter
Paolo Vavassori,Alessandro Iommi +1 more
TL;DR: In this article, a dual-mode optical fiber is used to produce a power transfer between a first and a second propagation modes (LP01, LP11) of the optical signal.
Patent
Optical fiber, optical fiber filter, and optical amplifier
Paolo Vavassori,Alessandro Iommi +1 more
TL;DR: In this article, an optical fiber filter consists of a pair of first coupling regions and a phase-shift region, which are formed in the optical fiber, at a predefined mutual distance, for producing power transfer between first and second propagation modes of the optical signal.
Patent
Spindle for polishing polymer preforms for microstructured fibres, a method of polishing polymer preforms for microstructural fibres as well as a polymer microstructural fibre made using a polished spindle preform
TL;DR: In this article, a spindle for polishing polymer preforms for microstructural fibres that improve the optical properties of drawn fibres is presented, and a method of polishing air channels in preforms making use of the spindle as well as a polymer micro-structural fibre drawn from the preform, whose air channels were polished.
References
More filters
Patent
Circularly birefringent optical fibre
TL;DR: In this paper, a single mode circularly birefringent optical fiber having a central core and a surrounding cladding is described, where the core (10) contains four symmetrically disposed core regions (12 to 15) each having an average refractive index greater than that of the surrounding portions of the core and each of which follows a helical path.