Journal ArticleDOI
Theory and fabrication of 4 × 4 single-mode fused optical fiber couplers
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The theory, fabrication, and performance of monolithic 4 x 4 single-mode fused couplers is reported, and measurements show that the device exhibits excellent coupling uniformity and low excess loss.Abstract:
The theory, fabrication, and performance of monolithic 4 × 4 single-mode fused couplers is reported The field coupling matrix is derived and used to show that a device having equal coupling between the four fibers may be obtained The fabrication of such a device is described, and measurements show that the device exhibits excellent coupling uniformity and low excess loss The wavelength response of a device designed for equal coupling at 153 μm is shown between 12 and 16 μmread more
Citations
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Journal ArticleDOI
Nonlinear switching in multiple-core couplers.
TL;DR: Power-controlled switching between any output ports of different multiple-core nonlinear directional couplers is predicted and a second conservation law has been found in addition to the power conservation law.
Patent
Broadband MXN optical fiber couplers and method of making
TL;DR: In this paper, a broadband optical fiber coupler comprising at least three continuous optical fibers fused at a region of coupling, at least one of the continuous optical fiber being dissimilar to others of the optical fibers in the region of couplings, the region being of length and the dissimilarity being of a degree to provide broadband response over a predetermined range of wavelengths.
Journal ArticleDOI
Power splitting of 1 × 16 in multicore photonic crystal fibers
Dror Malka,Aaron Peled +1 more
TL;DR: In this article, a 1 × 16 power splitter based on a variable multicore photonic crystal fiber (PCF) structure is described, where the input optical signal at a wavelength of 1.55μm inserted into the central core was divided into sixteen output cores, each with 6.25% of the total power.
Patent
Optical mimo processing
TL;DR: In this article, a technique for an optical multiple input multiple output (MIMO) processing system is provided for optical MIMO systems, which includes an interface to a multi-mode fiber at the first end of the optical processing system; M first single-mode waveguides coupled to the interface; and an optical processing core arranged to transform the first optical signals into the second optical signals using a plurality of optical couplers.
Journal ArticleDOI
Coupling Characteristics of Multicore Photonic Crystal Fiber-Based 1 $\,\times\,$ 4 Power Splitters
TL;DR: In this article, a new design of multicore photonic crystal fibers (PCFs) is proposed and investigated through full-vectorial finite element method and finite-element beam propagation method.
References
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Journal ArticleDOI
Coupled-Mode Theory for Optical Fibers
TL;DR: In this paper, a set of coupled-mode equations is derived to describe mode propagation in uniform and slightly nonuniform cylindrical optical-fiber systems, and the coupling between fibers of an array made up of n identical fibers each at the vertex of a polygon and one at the center, which is not necessarily the same as its n neighbors, is determined.
Journal ArticleDOI
Passive optical local networks for telephony applications and beyond
TL;DR: In this article, a new digital telephone system using a passive optical network is described, where downstream transmission is broadcast and optical time-division, multiple access (OTDMA) is used in the upstream path.
Journal ArticleDOI
Wavelength-flattened fused couplers
TL;DR: In this article, a low-loss, stable, single-mode 2×2 port coupler has been fabricated using this technique, which has 50/50% coupling at both 1.3 and 1.52 μm.
Journal ArticleDOI
Hierarchic and combinatorial star couplers.
TL;DR: An interconnection method for transmissive stars is presented that permits the fabrication of arbitrarily large stars from elementary ones, being free from multiple-path interference, and particularly well suited for single-mode stars.
Journal ArticleDOI
Possible fused fibre in-phase/quadrature measuring multiport
Arl Travis,John Carroll +1 more
TL;DR: In this article, the structural properties required for a four-fibre fused coupler to give a passive in-phase/quadrature multiport are outlined, where the coupler can be used for both passive and active communication.