Abstract: Techniques for aligning each of a plurality of optical fibers for coupling to a photonic integrated circuit (PIC). Transmission is detected from each respective optical fiber to the PIC using a probe, and the respective optical fiber is aligned based on the detected transmission. Each of the plurality of optical fibers is coupled to the PIC using at least one of: (i) laser splicing, (ii) laser spot welding, or (iii) arc welding.

Abstract: An optical assembly includes a hermaphroditic cassette comprising a hood that includes a narrower section and a wider section. The narrower and wider sections are separated by slots such that the narrower section fits at least partially within a wider section of an identical mating hood of a mating optical assembly and the wider section receives a narrower section of the mating hood. The hood has first and second stop features configured to engage with second and first stop features of the mating hood. The first stop feature comprises a mating end of the narrower section of the hood and the second stop feature comprises a stop surface disposed within the wider section of the hood. Engagement of the stop features of the hood with stop features of the mating hood is configured to stop relative translational movement of the hood and the mating hood along the mating axis during mating.

Abstract: An optical cable includes an optical fiber having a fiber core and a fiber cladding, and an output coupling plug at an output coupling-side fiber end of the optical fiber. The output coupling plug comprises at least one cladding light sensor arranged behind the output coupling-side fiber end and configured to measure cladding light that exits frontally from the fiber cladding at the output coupling-side fiber end.

Abstract: A fusion splicer includes an irradiation unit to irradiate an optical fiber with first wavelength light and second wavelength light; a light receiving unit; a processing unit to extract first feature data from first luminance information based on the first wavelength light and to extract second feature data from second luminance information based on the second wavelength light; a determination unit to determine whether the first feature data and the second feature data are within a predetermined range; and a drive unit to move one optical fiber on the basis of the luminance information from which the feature data is extracted so as to arrange the axes of the optical fibers in a predetermined positional relationship when the feature data is determined to be within the predetermined range. The processing unit extracts the second feature data when the first feature data is not within the predetermined range.

Abstract: A high absorption photovoltaic material and method of making the material for use in a solar cell are disclosed. The photovoltaic material includes a surface modified with a layer of repeating photonic crystal structures. The photonic crystal structures are approximately inverse conically shaped and have a curved sidewall that has an approximately Gaussian shape. The photonic crystal structures generally have a high vertical depth and sidewall angle. The structures also have a gradient refractive index profile and exhibit the parallel-to-interface refraction light trapping effect. An anti-reflective coating is disposed over the photonic crystal structure layer. The photovoltaic material exhibits near unity light absorption over a broad range of visible and near infrared wavelengths and incidence angles, even at reduced thicknesses.

Abstract: A mounting structure for an optical module includes a light emitting element, a submount board on which the light emitting element is mounted, a main board on which the submount board is mounted, a light guide member provided on the main board, and a diffraction grating optical coupler provided on the main board and connected to the light guide member. The submount board and the main board are bonded to each other on a surface of the submount board different from a surface on which the light emitting element is mounted.

Abstract: The present disclosure relates to fiber optic components and structures for use in building fiber optic networks using an indexing architecture. In certain examples, fan-out structures are used.

Abstract: A holder configured for use with a fiber optic cable connector body is disclosed. The holder includes, as an improvement, an integral stop. The integral stop includes a wall located adjacent a first end portion of the connector holder. The plurality of substantially semicylindrical recesses are located between the first end portion and a second end portion spaced from the first end portion. The wall is located between two adjacent recesses of the plurality of recesses. The wall includes a base oriented along a longitudinal axis. The wall has a first exterior surface, and a second exterior surface spaced from the first exterior surface. The first and second exterior surfaces each extend from the base and are oriented transverse to the longitudinal axis.

Abstract: A hollow-core photonic crystal fiber (HC-PCF) (10) for guiding at least one mode of a light field (1) along a mode guiding section (11) of the HC-PCF (10), comprises an outer jacket (12), an inner cladding (13) and a hollow core (14), which extend along the HC-PCF (10), wherein the inner cladding (13) is arranged on an interior surface of the outer jacket (12) and comprises anti-resonant structures (15) surrounding the hollow core (14), and the hollow core (14) has a mode guiding core diameter (d) provided along the mode guiding section of the HC-PCF (10), and wherein at least one fiber end (16) of the HC-PCF (10) has a light field coupling section (17) in which the hollow core (14) is tapered over an axial coupling section length from a fiber end core diameter (D) at the at least one fiber end (16) to the mode guiding core diameter (d). Furthermore, methods of using the HC-PCF and manufacturing the HC-PCF are described.

Abstract: An adapter holder assembly supports one or more optical adapters. The adapter holder includes first and second holding members spaced from each other. Inner sides of the holding members define one or more mounting channels each having a corresponding latching arm. The optical adapters mount to the holder assembly by sliding over the latching arms towards stop surfaces defined by the holding members. In certain implementations, the optical adapter is releasable by applying sufficient force to the optical adapter along a slide axis away from the respective stop surface.

Abstract: An optical fiber unit includes: a first optical fiber ribbon that intermittently connects a first plurality of optical fibers; a second optical fiber ribbon that intermittently connects a second plurality of optical fibers; and interlayer connection parts that intermittently connect the first optical fiber ribbon and the second optical fiber ribbon in a length direction while the first optical fiber ribbon and the second optical fiber ribbon are layered and arranged. The first optical fiber ribbon and the second optical fiber ribbon are layered and arranged such that optical fibers having a same fiber number of the first optical fiber ribbon and the second optical fiber ribbon are aligned in a up-down direction perpendicular to the length direction.

Abstract: An optical switching device (20) includes a substrate (39) and first and second optical waveguides (23, 25) having respective first and second tapered ends (62, 64), which are fixed on the substrate in mutual proximity one to another. A pair of electrodes (36, 38) is disposed on the substrate with a gap therebetween. A cantilever beam (32) is disposed on the substrate within the gap and configured to deflect transversely between first and second positions within the gap in response to a potential applied between the electrodes. A third optical waveguide (21) is mounted on the cantilever beam and has a third tapered end (60) disposed between the first and second tapered ends of the first and second waveguides, so that the third tapered end is in proximity with the first tapered end when the cantilever beam is in the first position and is in proximity with the second tapered end when the cantilever beam is in the second position.

Abstract: A scanner is provided with a plurality of elementary scanners each able to scan a different surface by means of a light beam. Each elementary scanner comprises a beam, for example a vibrating beam, on or in which a phase-controlled array is formed, intended to extract, at a face of the beam, a light beam able to be emitted by a light source. At least one beam of one of the elementary scanners, referred to as the first scanner, has, at rest, a deflection different from that of the beams of the other elementary scanners. This arrangement enables the first scanner to scan a surface, referred to the first surface, different from that scanned by the other elementary scanners. The optical scanner according to the present invention makes it possible to cover a relatively large surface while keeping appreciable compactness.

Abstract: Examples described herein relate to an optical device having a photonic-crystal lattice structure. In some examples, the optical device may include a substrate having a photonic-crystal lattice structure. The optical device may further include an optical waveguide formed in the photonic-crystal lattice structure and a defect cavity formed in the photonic-crystal lattice structure and optically coupled to the optical waveguide. Furthermore, the optical device may include a refractive index tuning structure adjacent to the defect cavity in the photonic-crystal lattice structure.

Abstract: Optical splitting adaptors and associated methods of manufacturing are provided. An example optical splitting adaptor includes a first connector housing that interfaces with a first optical transceiver having a first data rate, and the first connector housing accommodates a first type multi-fiber ferrule of a first number of fibers. The example optical splitting adaptor also includes a second connector housing that defines dual receptacles for interfacing with a second optical transceiver and a third optical transceiver, and the dual receptacles receive respective multi-fiber ferrules. The example optical splitting adaptor further includes a plurality of fibers operably connecting the first connector housing and the second connector housing such that, in operation, the plurality of fibers perform optical splitting between the first type multi-fiber ferrule of the first connector housing and the multi-fiber ferrules received by the dual receptacles of the second connector housing.

Abstract: A waveguide apparatus, comprises: disposed in at least one layer: an input coupler; a first fold grating; a second fold grating; an output coupler; and a source of light optically coupled to the waveguide providing at least first and second polarizations of the light and at least one wavelength. The input coupler is configured to cause the first polarization light to travel along a first total internal reflection (TIR) path and the second polarization light to travel along a second TIR path.

Abstract: A multi-section optical modulator and related method are disclosed wherein two waveguide arms traverse a plurality of successive modulating sections. A differential drive signal is applied separately to each waveguide arm of each modulating sections in synchronism with the transmission of light along the waveguide arms, effecting a dual differential driving of each section. By suitably selecting the number of modulating sections and the section length, a high modulation bandwidth and a high modulation efficiency may be achieved simultaneously for a given peak-to-peak voltage swing of the drive signal.

Abstract: An optical connector assembly having a connector housing with a first and second end. First end accepts a ferrule assembly, and second end accepts a retention assembly. There is a longitudinal bore from a distal to proximal end of connector. Bore accepts a POF optical fiber therein at distal end and fiber is inserted proximally until fiber bottoms-out at proximal end of ferrule. Retention body accepts one or more retention caps, or retention body contains at least one retention wing set to secure fiber to connector.

Abstract: There are provided an optical receptacle having an optical fiber including a first portion on another end surface side, a third portion on one end surface side, and a second portion between the first portion and the third portion; a core diameter at the first portion is smaller than the core diameter at the third portion; the core diameter at the second portion increases from the first portion side toward the third portion side; a first elastic member is provided between the optical fiber and an inner wall of a through-hole; a holder holds the another end surface side of a fiber stub; and the sleeve holds the one end surface side of the fiber stub.

Abstract: An interference filter module comprises two optical fiber collimators arranged on an optical axis so as to be opposed to each other, interference filters, and a casing including a main body portion and filter holding portions to be mounted into the main body portion, which are configured to hold the interference filters. Two interference filters including a kth filter when counted from a front end and a k-th filter when counted from a rear end are determined as a k-th set. The two interference filters of the k-th set are accommodated in two filter holding portions, each of which is a k-th holding portion when counted from the front end and the rear end, respectively. The two filter holding portions have rotation axes in directions orthogonal to a fore-and-aft direction and are rotatably held by the casing. The rotation axes of the filter holding portions are orthogonal to each other.