Abstract: The invention relates to an optical communication bundle (10) comprising one layer (1), said layer (1) including at least three parallel optical fibers (2) which together define a first side of the layer (1) and a second side of the layer (1) opposite the first side, and a weft yarn (3) interlaced with the optical fibers (2) in order to maintain the optical fibers (2) relative to one another, said weft yarn (3) extending alternately on the first side and on the second side of the layer (1), passing through the layer (1) from the first side to the second side and from the second side to the first side. According to the invention, the layer (1) has a position in which it is wound about itself so as to form a bundle in which the optical fibers (2) are non coplanar; and the interlacing between the weft yarn (3) and the optical fibers (2) is adapted to allow the sheet (1) to pass from the wound position into an unwound position in which the optical fibers (2) are coplanar.

Abstract: A dust plug for a fiber optic connector includes a plug wall, an alignment member and a ferrule protector. The plug wall includes a first side and a second side. The plug wall may or may not be part of a housing. The alignment member may extend from the first side of the plug wall wherein the alignment member is configured to engage with and be disposed within an adapter. The ferrule protector may extend from the second side of the plug wall wherein the ferrule protector may be configured to receive a ferrule of a fiber optic cable. The ferrule protector, the plug wall, and the alignment member may be configured to block a signal from the ferrule when the ferrule is disposed within the ferrule protector and when the member is inserted into the adapter.

Abstract: The present disclosure relates to laser treatment of an optical fiber to secure the optical fiber within a ferrule bore. In particular, the laser treatment modifies the physical structure of the optical fiber to aid in securing the optical fiber within the ferrule bore and to correct core-to-ferrule eccentricity errors.

Abstract: A system, method, and photonic chip for an optical circulator are described. The system includes a first polarization splitter, a first optical circuit, and a first controller. The first polarization splitter receives, at a first port of the first polarization splitter, a first optical signal. The first optical circuit is optically coupled to the first polarization splitter. The first optical circuit includes a first plurality of phase shifters. The first optical circuit receives, at a first port of the first optical circuit, a second optical signal. The first controller adjusts the first plurality of phase shifters such that the first optical circuit outputs the first optical signal at a second port of the first optical circuit and such that the first polarization splitter outputs the second optical signal at the first port of the first polarization splitter.

Abstract: A ferrule includes a ferrule body and at least one fiber. The fiber is inserted into a through hole axially disposed in the ferrule body, a first end of the fiber is located inside the through hole, an end face of the first end of the fiber is below a plane on which a connection end face of the ferrule body is located, and a first preset distance is a vertical distance between the end face and the plane. The first preset distance causes two abutted ferrules to have a gap between the fibers.

Abstract: Embodiments herein describe a pluggable module that includes a ROADM implemented in a photonic integrated circuit (PIC). By implementing the ROADM in a PIC, the ROADM can be placed on smaller, pluggable modules (e.g., a Small Form-factor Pluggable (SFP) which can be a hot-pluggable network interface module).

Abstract: An MCF of one embodiment combines the adoption of a plurality of cores with different refractive indices with suppression of manufacturing costs. The MCF has a glass optical fiber having a plurality of cores and a cladding, and a resin coating. The plurality of cores includes a first core with a high refractive index and a second core with a low refractive index. On a cross-section of the MCF, an arrangement of centers of a plurality of portions has no rotational symmetry about the cross-section center, the portions having a refractive index higher than that of the cladding. Furthermore, a mode leakage adjustment structure is provided to reduce a difference between a cutoff wavelength of a residual higher-order mode in the second core and a cutoff wavelength of a residual higher-order mode in the first core.

Abstract: An image display apparatus capable of achieving uniform image quality while improving the use efficiency of incident light, including: an image forming unit that emits image light and converts the image light into parallel light for an angle of view; a light guide plate that allows the image light converted by the image forming unit to enter, to travel inside the light guide plate, and to be emitted outward from the light guide plate; a first diffraction grating in the light guide plate that diffracts the image light and causes the image light to travel inside the light guide plate; a second diffraction grating in the light guide plate that diffracts the image light traveling inside the light guide plate and emits the image light outward from the light guide plate; and a recycler diffraction grating that diffracts and recycles the image light emitted from the second diffraction grating.

Abstract: A multicore optical fiber including four cores arranged in a linear configuration, the centerline of each core being spaced from the centerline of an adjacent core by a distance x of about 30 microns or less, and each core having a relative refractive index ?1. A cladding surrounding each of the four cores, the cladding including an inner cladding region with a relative refractive index ?2, a depressed-index cladding region with a relative refractive index ?3, and an outer cladding region with a relative refractive index ?4, wherein ?1>?2>?3 and ?1>?4>?3. Furthermore, each core of the four cores has a mode field diameter, at a wavelength of 1310 nm, of about 8.1 microns or less, and cross talk between adjacent cores is about ?18 dB or less at wavelengths of 1310 nm and 1550 nm per 2 km fiber length.

Abstract: Provided is a light guide plate which, when used as a light guide plate of a glasses-type device such as a wearable device for AR/MR, is capable of enhancing color reproducibility of an image. A light guide plate 10 includes a glass plate 1, and a resin layer 2 formed at a main surface of the glass plate 1. The difference in Abbe number ?d between the glass plate 1 and the resin layer 2 is less than 10. The refractive indices nd of the glass plate 1 and the resin layer 2 are 1.7 or greater and the difference between the refractive indices nd is 1.0 or less.

Abstract: Embodiments disclosed herein include optoelectronic systems and methods of forming such systems. In an embodiment, an optoelectronic system comprises a first substrate, a second substrate over the first substrate, and a micro-ring resonator (MRR) over the second substrate. In an embodiment, a heater is integrated into the MRR, a cladding is over the MRR, and an opening is through the first substrate and the second substrate to expose a bottom surface of the MRR.

Abstract: Disclosed herein are embodiments of a glass composition including SiO2 in an amount in a range from 53 mol % to 84 mol %, Al2O3 in an amount in a range from 0.3 mol % to 20 mol %, Na2O in an amount in a range from 3 mol % to 16 mol %, and at least one of Cs2O or Rb2O in an amount in a range from 0.05 mol % to 8 mol %. The glass composition has a first silver ion diffusivity at 110° C. of 5×10?19 m2/s or less, and the glass composition has a second silver ion diffusivity at 350° C. of at least 5×10?17 m2/s at 350° C. The glass composition is particularly suitable for use as a glass substrate of a photonic chip package.

Abstract: A device is disclosed that features a hybrid electro-photonic integrated circuit devices that include an electronic circuit layer mounted on a photonic circuit layer. In one aspect, a device includes a photonic circuit layer including a first surface, a second surface opposite the first surface, and photonic circuit portions tiled together to provide the photonic circuit layer. The photonic circuit layer includes electro-optical transceivers, one or more optical couplers, and waveguides. The waveguides include boundary-crossing waveguides that each extend across a boundary between adjacent photonic circuit portions. Each boundary-crossing waveguide includes an optical connection at the boundary. The optical connection has a width larger than a width of the waveguide away from the boundary. A first photonic circuit layer portion includes first and second electro-optical transceivers and first and second waveguides.

Abstract: The present disclosure is directed to various embodiments of methods for making an optical fiber. The methods may include drawing an optical fiber from a hollow-core preform. The hollow-core preform may include an annular support structure with an inner surface defining an interior cavity. The interior cavity may include a tube in direct contact with the inner surface of the annular support structure. The tube may include a wall defining an internal opening, the internal opening having a sealed end. The drawing may include regulating a pressure of the internal cavity to a predetermined pressure.

Abstract: A panel system includes a front door attached to a chassis by a living hinge. In certain examples, the door also is pivotally attached to the living hinge. The living hinge components can snap-fit to the front door and/or to the chassis. The panel system also may have a mounting bracket that attaches to the chassis without tools to hold the chassis at a rack. The mounting bracket may be mounted at any of multiple predetermined positions along the depth of the chassis.

Abstract: The present disclosure provides a micro sheath buffer tube with rollable optical fiber ribbons for optical fiber cable to reduce the overall cable diameter. The buffer tube indicates one or more subunits, a micro sheath layer and a plurality of water swellable yarns. The one or more subunits encloses a plurality of optical fiber ribbons. Each optical fiber ribbon of the plurality of optical fiber ribbons includes 12 optical fibers. Further, each of a plurality of optical fibers is a colored optical fiber. In addition, the micro sheath layer surrounds the one or more subunits. Furthermore, the one or more subunits has a coating layer of low smoke zero halogen material.

Abstract: The present disclosure relates to a fiber optic cable breakout assembly that includes a transition body made from a moldable material having an inlet end and an opposite outlet end. The moldable transition body includes a centering element positioned therein and an internal splice positioned within the centering element to splice a plurality of breakout fibers to at least one cable. The centering element is configured to center the splice, the at least one cable and the plurality of breakout fibers prior to molding the transition body. The transition body is adapted to protect the splice and fibers such that no other external protection is needed.

Abstract: A very small form-factor (VSFF) fiber-optic connector has two latch assemblies, one on each side of the connector and being non-removable from the connector. The latch assemblies are movable between a forward active position and a rearward inactive position parallel to a longitudinal axis, and when the first latch assembly is in the forward active position, the second latch assembly is in the rearward inactive position for a first polarity configuration of the VSFF fiber-optic connector, and vice-versa for a second polarity configuration of the VSFF fiber-optic connector.

Abstract: A method of making chalcogenide based polymeric materials and converting those materials into optical fiber preforms and polymeric optical fibers. The preforms and fibers comprise chalcogenide elements and crosslinking moieties. These fibers can be used as optical waveguides at infrared wavelengths where other polymer fibers do not operate. The optical waveguides are ideally suitable for applications requiring the transmission of low-power infrared light, but may also be useful for transmitting high-power light at visible or infrared wavelengths.

Abstract: An optical connector ferrule is a member in which an optical fiber is fixed inside a body section, and the distal-end side thereof forms a connection end surface for the optical fiber. An internal space in which the optical fiber is accommodated is formed inside the body section. The internal space runs through from the rear end to the distal end of the body section. An adhesive injection window that is open to the outside is formed in the upper surface of the body section. The adhesive injection window and the internal space are communicated inside the body section via a reduced-diameter section. In plan view, the area (area of the smallest section) of the reduced-diameter section is smaller than the open area of the adhesive injection window.