Abstract: Configurations for an optical coupler that includes waveguides that provide asymmetric mode confinement. The optical coupler may include first and second rib waveguides, and the width of the shoulder of at least one rib waveguide may taper to provide the asymmetric mode confinement. In some instances the shoulders of one or both rib waveguides may have different heights in a central region of the optical coupler.

Abstract: An optical coupler includes a first waveguide including a first multi-mode waveguide section having a cross-section characterized by a first height and a first width that is greater than the first height and a second waveguide including a second multi-mode waveguide section having a cross-section characterized by a second height and a second width that is greater than the second height. The first multi-mode waveguide section is positioned adjacent to the second multi-mode waveguide section at least partially above or below the second multi-mode waveguide so that light entering the first multi-mode waveguide section is coupled from the first multi-mode waveguide section to the second multi-mode waveguide section. Methods for coupling light between waveguides with the optical coupler and optical devices that include the optical coupler are also described.

Abstract: There is set forth herein a method including building a first photonics structure using, wherein the building the first photonics structure includes fabricating one or more photonics device.

Abstract: An adapter main body is formed by an upper wall plate portion, and a plurality of side wall plate portions vertically placed between both ends of and between the upper wall plate portion. A lower end of each of the side wall plate portions in the adapter main body is fixed to an upper surface of a front end of a bottom plate in a case main body portion of the cassette case, thereby forming a multiple type adapter in which a plurality of adapter single bodies are continuously provided in the upper surface of the bottom plate, the adapter single body having an approximately quadrangular tubular shape in a front view, and a cable accommodating portion of an optical fiber is formed in the cassette case main body portion at the rear of the adapter main body. Therefore, the compact and lightweight adapter can be easily formed.

Abstract: An optical fiber connector with a connector housing that holds a ferrule includes a retractable shutter having a shutter plate and a shutter actuator. The shutter actuator is slidably connected to the connector housing for movement relative to the connector housing between a front position and a rear position. The shutter actuator is configured to engage the mating interface as the optical fiber connector is plugged into the mating interface whereby the shutter actuator moves relative to the connector housing from the front position to the back position. The shutter plate is connected to the shutter actuator such that the shutter actuator is configured to drive the shutter plate to move between an extended position and a retracted position. In the extended position, the shutter plate is located to shield the ferrule. In the retracted position, the shutter plate is located expose the ferrule.

Abstract: An optical circuit board of the present disclosure includes a wiring board and an optical waveguide located on the wiring board. The optical waveguide includes a lower cladding layer, a core located on the lower cladding layer, an upper cladding layer located on the lower cladding layer and covering the core, a first cavity extending from the upper cladding layer to the lower cladding layer and dividing the core, and at least two second cavities extending from the upper cladding layer to the lower cladding layer and located with the core therebetween in plan view. The first cavity has a first opening portion located on the upper cladding layer side and a first bottom portion located on the lower cladding layer side. The second cavities each include a second opening portion located on the upper cladding layer side and a second bottom portion located on the lower cladding layer side.

Abstract: An optical fiber alignment assembly may comprise an alignment fixture including a groove configured to engage first and second optical fiber ferrules, a first clamping mechanism configured to selectively apply a force on the first optical fiber ferrule to constrain motion of the first optical fiber ferrule within the groove, and a second clamping mechanism configured to selectively apply a force on the second optical fiber ferrule to constrain motion of the second optical fiber ferrule within the groove.

Abstract: Methods and systems that can be used for aligning and positioning of an optical fiber are provided herein. For example, an optical fiber alignment and positioning system including a vacuum stage may be provided. The vacuum stage may include a vacuum inlet operable to be in fluid communication with a vacuum source and one or more passages extending through the vacuum stage. The vacuum stage may include an optical fiber channel. A plurality of vacuum ports may pass through the optical fiber channel. The optical fiber channel may include a directional friction surface. The directional friction surface may include a first friction factor in a first direction and a second friction factor in a second direction. The directional friction surface may contact a portion of the optical fiber and may allow movement in the second direction but resist movement of the optical fiber in the first direction.

Abstract: In one embodiment, an optical transceiver includes: a photonic integrated circuit (PIC) formed on a semiconductor die having a first side and a second side opposite the first side, where the first side includes a first optical circuit and a second optical circuit and the second side is to electrically couple with a substrate. The PIC may further have one or more through silicon vias (TSVs) formed through the semiconductor die to electrically couple the first side with the second side, where at least one of the TSVs is to enable electrical coupling between a first other die adapted to the first side and a second other die. Other embodiments are described and claimed.

Abstract: In the field of measuring physical parameters with a multimode optical fiber, a system for measuring P physical parameters at one or more measurement points has one or more multimode optical fibers. The system includes: a light source generating a source optical signal, a multimode measurement optical fiber transporting optical signals in at least M distinct second predetermined propagation modes, M being an integer greater than or equal to P, the measurement optical fiber including a measurement section reflecting the optical signals with a wavelength variable according to physical parameters to be measured, a detection device measuring wavelengths of the optical signals reflected by the measurement section, and an optical module generating M signals from the source optical signal, the M signals each being injected into the measurement optical fiber to propagate in one of the modes, the optical module also transferring the optical signals reflected toward the detection device.

Abstract: A waveguide includes a partially transparent incoupling portion, having a decoupling portion spaced apart therefrom in the lateral direction, having a substantially transparent base body outside the incoupling and outcoupling portions. The transparent base body has front and rear sides, the wave guide having a diffractive incoupling structure in the incoupling portion and a decoupling structure in the decoupling portion, the diffractive incoupling structure configured to diffract radiation coming from an object and incident on the incoupling portion only in part such that the diffracted part propagates to the decoupling portion by reflections in the base body as incoupled radiation, The decoupling structure deflects part of the incoupled radiation such that the deflected part exits the base body in the decoupling portion via the front or rear side as decoupled radiation, and the diffractive incoupling structure has a diffractive efficiency which continually decreases toward one edge of the incoupling portion.

Abstract: Aspects of the present disclosure describe optical phased array structures and devices in which hyperbolic phase envelopes are employed to create focusing and diverging emissions in one and two dimensions. Tuning the phase fronts moves focal point spot in depth and across the array. Grating emitters are also used to emit light upward (out of plane). Adjusting the period of the gratings along the light propagation direction results in focusing the light emitted from the gratings. Changes in the operating wavelengths employed moves the focal spot along the emitters.

Abstract: A waveguide structure (IOO) for a photonic integrated circuit, comprising: a substrate; an active region (102) comprising a diode junction, the active region comprising: a light emission portion (102a) to emit light in a first direction and a second direction perpendicular the first direction; and a light absorption portion (102b) to absorb light emitted from the light emission portion (102a) in the second direction; a first contact corresponding to the light emission portion (102a); and a second contact corresponding to the light absorption portion (102b).

Abstract: An optoelectronic device comprising an optical waveguide formed in a silicon device layer of a silicon-on-insulator wafer. The optical waveguide including a semiconductor junction comprising a first doped region of semiconductor material and a second doped region of semiconductor material. The second doped region containing dopants of a different species to the first doped region. A first portion of the first doped region extends horizontally on top of the second doped region, a second portion of the first doped region extends vertically along a lateral side of the second doped region and a third portion of the first doped region protrudes as a salient from the first or second portion of the first doped region into the second doped region.

Abstract: The present disclosure relates generally to ferrule-less fiber optic connectors, systems, and methods for enhancing the physical contact or connection interface between a first plurality of optical fibers and a second plurality of optical fibers after a cleaving process. The present disclosure is directed at ensuring proper alignment and performance of mated optical fibers by controlling the orientation of major flared sides relative to a connector keying feature.

Abstract: A light emitting device includes a light source and a waveguide structure. The light source emits light having a directionality. The waveguide structure includes an optical waveguide and an exterior part. The optical waveguide has an incident end surface and an emission end surface, converts a wavelength of the light incident from the incident end surface, and emits the light from the emission end surface. The exterior part is optically transparent and covers the optical waveguide such that the incident end surface and the emission end surface are exposed from the exterior part. The optical waveguide is elongated in a length direction. The length direction of the optical waveguide is inclined at a predetermined angle with respect to an optical axis of the light in a predetermined plane including the length direction of the optical waveguide and the optical axis of the light.

Abstract: A cabinet includes a first compartment coupled to a second compartment with a sealed cable port arrangement separating the two compartments. The second compartment is more robustly sealed than the first compartment. A sealed splice enclosure is disposed in the first compartment. The splice enclosure is more robustly sealed against water intrusion than the second compartment.

Abstract: A fiber optic distribution box includes a box unit, a protective shield unit pivotally mounted on the box unit, and a plurality of mounting units detachably installed to the box unit for accommodating a plurality of adapters. The box unit includes a box body defining an interior space and a plurality of base brackets disposed on the box body and accommodated in the interior space. Each mounting unit includes a flanged seat and a tubular portion extending obliquely upwardly from the flanged seat.

Abstract: A photonics package may include a substrate, a hanging connector, and a fast-axis collimator (“FAC”). The hanging connector is typically affixed to a side of the substrate other than the side through which a light output is emitted. The hanging connector may be L-shaped in cross-section, having a base section and an extended section projecting from the base section. The base section affixes to the substrate while the extended section affixes to the FAC, so that the FAC extends downward along the emitter surface of the substrate; a vertex of the FAC is coplanar with an emitter outputting the light output.

Abstract: An opto-electric hybrid board that sequentially includes an optical waveguide and an electric circuit board toward one side in a thickness direction. The electric circuit board includes a metal supporting layer, an insulating base layer disposed on a one-side surface in the thickness direction of the metal supporting layer, a plurality of conductive layers sequentially disposed at one side in the thickness direction, and an intermediate insulating layer disposed between the conductive layers. At least one layer selected from the group consisting of the metal supporting layer and the conductive layers is electrically insulated from the other layers.