摘要:
Methods and devices for aligning an optical current transducer are provided. The aligning includes, using a novel fixture having a predetermined grooved pattern therein, mounting, in a first groove of the pattern, a first portion of a cable of the optical current transducer and a polarizer unit of the optical current transducer. Further, the aligning can include mounting, in a second groove of the pattern, a second portion of the cable and a mirror unit of the optical current transducer.
摘要:
As a result of the size of the detector elements thereof, optoelectronic detectors such as photoelectron multipliers comprising a light-entry region sealed by a protective disc can only be used with much outlay for recording an image of a diffraction-limited focus volume in a two-dimensional spatially resolved manner, even if the image is significantly magnified in relation to the focus volume. The novel detector is intended to enable the spatially resolved detection of point spread functions with little outlay and high accuracy. 2.2 For this purpose, a body made of glass or glass ceramics comprising an opening, in which one end of an optical fibre is arranged, is cemented to the cover disc in such a way that the end of the optical fibre faces the cover disc and the optical axis thereof intersects the light-entry region. Thus, the relative position of optical fibre and entry region can be provided permanently with high accuracy. Preferably, the detector includes a plurality of detection channels, in particular 32 channels, comprising a respective light-entry region and the body includes a plurality of openings comprising a respective optical fibre. 2.3 Fluorescent microscopy.
摘要:
The active optical coupling system generally has: a photonic die having a photonic integrated circuit (PIC) waveguide element disposed thereon, the PIC waveguide element having an intermediate coupling element disposed on the PIC waveguide element; a liquid crystal refractive element (LCRE) being optically coupled to the PIC waveguide element of the photonic die via the intermediate coupling element, the LCRE having a first face for receiving light, a second face opposite the first face for outputting the received light, a liquid crystal layer between the first and second faces, and an electrode system arranged to act on the liquid crystal layer; and a controller being electrically connected to the electrode system of the LCRE and being operable to actively control the propagation of the outputted light upon action of the electrode system, said active control allowing coupling of the outputted light into the PIC waveguide element.
摘要:
An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.
摘要:
According to the present invention, as a result of using a depressed or trench-assisted light-receiving waveguide in which the core is surrounded by a layer having a refractive index lower than that of a cladding as light-receiving means for receiving light outputted from a multi-core optical fiber, the layer of a low refractive index can inhibit the propagation of noise, etc. from the cladding to the core. Consequently, even in cases where the inter-core crosstalk is small, it is possible to accurately measure the inter-core crosstalk since components different from crosstalk-derived components in optical power are reduced.
摘要:
Disclosed is an optical subassembly (1) including a carrier substrate (2), a photonic integrated circuit (3) (PIC) including a first optical waveguide (4) having a first longitudinal central axis, the PIC being arranged on the carrier substrate, an external optical system (5) including a second optical waveguide (6) having a second longitudinal central axis, a component (7) for supporting the external optical system on the carrier substrate and maintaining alignment of the first and second longitudinal central axes with respect to each other, and an adhesive material (8, 9) being arranged between the component and the carrier substrate and between the component and the external optical system, the adhesive material having a total thickness of less than 10 μm. Also disclosed is an optical system (12) including such optical subassembly and a method of fabricating such optical subassembly.
摘要:
The disclosure generally relates to sets of optical waveguides such as optical fiber ribbons, and fiber optic connectors useful for connecting multiple optical fibers such as in optical fiber ribbon cables. In particular, the disclosure provides an efficient, compact, and reliable optical fiber connector that incorporates a unitary substrate combining the features of optical fiber alignment and redirection of the optical beam to a connected optical fiber.
摘要:
An optical connector includes a fiber element incorporating one or more optical fibers, the optical fiber including a plurality of cores, and an optical element including an array of optical waveguides arranged in one or more layers so as to match the geometry of the plurality of cores of the optical fiber.
摘要:
The present invention relates to an MCF with a structure for enabling an alignment work with higher accuracy. The MCF has a plurality of cores and a cladding. An outer peripheral shape of the cladding in a cross section of the MCF is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the MCF, and a cut portion. The cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion and projecting more than the bottom portion. When a side face of the MCF is viewed, the two contact portions have flattened faces and the flattened faces of the two contact portions extend along a longitudinal direction of the MCF with the bottom portion in between.
摘要:
One aspect of the invention provides an optoelectronics structure including: a substrate defining a trench on a first surface; and a VCSEL structure mounted vertically within the trench of the substrate such that the VCSEL structure emits a laser beam substantially parallel to the substrate. Another aspect of the invention provides an optoelectronics structure including: an fiber guiding substrate defining a trench on a first surface; a VCSEL structure mounted vertically within the trench of the fiber guiding substrate such that the VCSEL structure emits a laser beam substantially parallel to the substrate; and an optical fiber mounted on the fiber guiding substrate substantially coaxial with the laser beam emitted by the VCSEL structure.