Abstract: An optical waveguide is provided and includes: a core forming layer with a high refractive index; and a first clad layer with a low refractive index, bonded to a first main surface of the core forming layer. The core forming layer is provided in its plane direction with a core portion, lateral clad portions each having one side adjacent to a corresponding side of the core portion, and high refractive index portions each adjacent to the other side of a corresponding one of the lateral clad portions. The core portion is provided in its plane direction with a central region, and GI regions in each of which a refractive index continuously decreases from the central region toward an interface with the corresponding one of the lateral clad portions. The lateral clad portions each include a region having a constant refractive index.

Abstract: A method of transfer printing. The method comprising: providing a precursor photonic device, comprising a substrate and a bonding region, wherein the precursor photonic device includes one or more alignment marks located in or adjacent to the bonding region; providing a transfer die, said transfer die including one or more alignment marks; aligning the one or more alignment marks of the precursor photonic device with the one or more alignment marks of the transfer die; and bonding at least a part of the transfer die to the bonding region.

Abstract: An optical module includes a housing; an optical adapter arrangement disposed at the housing; a cable inlet leading from an exterior of the housing to the interior of the housing; and a splice location disposed within the interior of the housing. Optical pigtails extend from the optical adapter arrangement to the splice location. Certain types of modules have a removable splice tray having a bend radius limiting arrangement surrounding multiple splice channels. Certain types of modules have first and second chambers separated by a wall defining a pass-through aperture.

Abstract: An integrated photonics optical gyroscope fabricated on a silicon nitride (SiN) waveguide platform comprises a first silicon nitride (SiN) waveguide layer that constitute a rotation sensing element; and, a second SiN waveguide layer with additional silicon nitride (SiN) waveguide-based optical components that constitute a front-end chip to launch light into and receive light from the rotation sensing element. The two SiN waveguide layers can be stacked together to have a multi-layer configuration vertically coupled with each other. External elements (e.g., laser, detectors, phase shifter) may be made of different material platform than SiN and can be hybridly integrated to the SiN waveguide platform. The phase shifters can be made of lithium niobate or other electro optic material.

Abstract: An optical communication module separating the input and output of light signals by birefringence includes first and second planar optical waveguides with a birefringent crystal connected to both. An optical fiber is adjacent to the second planar optical waveguide. An output beam from a transmitter passes through the first planar optical waveguide, the birefringent crystal, and the second planar optical waveguide in sequence, and enters into the optical fiber. An incoming beam from the optical fiber passes through the second planar optical waveguide, the birefringent crystal, and the first planar optical waveguide in sequence, and then falls onto a receiver.

Abstract: An intermittent tape core wire (140) of an optical fiber cable is assembled into a cable core so that in a k core wire, an l core wire, and an m core wire composed of a multi-core optical fibers continuously adjacent in the width direction of the intermittent tape core wire (140), a difference ? between a core wire twisting direction D2km of the k core wire at a bonding portion (142) connecting the k core wire and the l core wire and a core wire twisting direction D2kl of the k core wire at a bonding portion (142) connecting the k core wire and the m core wire is different from when manufactured.

Abstract: An optical subassembly includes an eyelet including a first through-hole penetrating from a first surface through a second surface; a first lead terminal, which is to be inserted into the first through-hole, and is configured to transmit an electric signal; a dielectric material, which is filled in a space between the first through-hole and the first lead terminal; a device mounting substrate, on which an optical device is to be mounted, and which includes a first conductor pattern configured to transmit the electric signal to the optical device; a metal block having mounted thereon the device mounting substrate; a temperature regulator placed between the metal block and the eyelet; a relay substrate including a second conductor pattern, which is configured to transmit the electric signal to the optical device; a seat, which protrudes from the first surface in a direction extended from the first through-hole, and has a third surface mounting the relay substrate; and a spacer interposed between the third surfa

Abstract: The present disclosure relates to a splice arrangement. The splice arrangement may include an elongate splice protection housing that defines a channel that extends lengthwise through the elongate splice protection housing from a first end of the splice protection housing to an opposite second end of the splice protection housing. The splice arrangement may also include a first fiber optic cable and a second fiber optic cable. First optical fibers of the first fiber optic cable and second optical fibers of the second fiber optic cable may be coupled together at a splice location positioned within the channel of the elongate splice protection housing.

Abstract: Present disclosure provides a method for grouping of a plurality of optical fibers using first coating layer and magnetic coating layer. The method of the present disclosure includes the step of coating of each of the plurality of optical fibers with a first coating layer and the step of coating of each of the plurality of optical fibers with a magnetic coating layer. Further, the method includes the step of applying magnetic field over the plurality of optical fibers for grouping of the plurality of optical fibers in a predefined manner. Furthermore, the first coating layer serves as a shock absorber to protect the plurality of optical fibers from physical damage.

Abstract: An optical fiber cable including a central strength member, a first plurality of tight-buffered ribbon stacks, a binder film, and a cable sheath. The central strength member extends along a longitudinal axis of the optical fiber cable. The tight-buffered ribbon stacks are SZ-stranded around the central strength member. An interstitial space is provided between adjacent tight-buffered ribbon stacks. A binder film continuously and contiguously surrounds the first plurality of tight-buffered ribbon stacks along the longitudinal axis. The binder film includes first portions and at least one second portion. Each of the at least one second portion of the binder film extends into one of the interstitial spaces of the first plurality of tight-buffered ribbon stacks. The cable sheath continuously and contiguously surrounds the binder film along the longitudinal axis, and the cable sheath is coupled to the first portions of the binder film.

Abstract: A method, apparatus, and system are disclosed for increasing light extraction efficiency in a light guide optical system. The light guide optical system may comprise a light emitting source. The light emitting source may be, for example, a light-emitting diode (LED) or plurality of LEDS. The light guide optical system may also comprise a light guide plate (LGP). The LGP may include light extraction features located on surfaces of the LGP. The LGP may also include a shaped injection surface on an input surface of the LGP. The shaped injection surface may be angled to deviate near-parallel light emitted from the LED to enable the near-parallel light emitted from the LED to be extracted from the LGP via the light extraction features. The shaped injection surface may be a split edge (i.e. a V-groove) or a curved edge.

Abstract: An optical fiber connector assembly comprises at least one connector having a latching arm for coupling to an adapter, and a remote release tab having a protrusion configured to cooperate with the adapter to depress said latching arm when the remote release tab is pulled relative to the adapter. The optical fiber connector assembly may further be configured to allow reversing its polarity.

Abstract: An optical connection component includes: a plurality of types of optical fibers; a plurality of high relative refractive-index difference optical fibers in each of which a relative refractive-index difference between a core and a cladding is larger than a relative refractive-index difference in each of the plurality of types of optical fibers and which are fusion spliced to the plurality of types of optical fibers; and a fixing member having a plurality of V-shaped grooves that receive the high relative refractive-index difference optical fibers with coating removed, the fixing member being configured to fix relative positions of the high relative refractive-index difference optical fibers and an optical element when optically coupling the high relative refractive-index difference optical fibers, which have been fusion spliced to the plurality of types of optical fibers, to the optical element. The high relative refractive-index difference optical fibers are of the same type.

Abstract: An electronic device includes a housing and a display. The housing defines an interior cavity and includes an optically-transmissive housing component. The display is disposed in the interior cavity and is viewable through the optically-transmissive housing component. An optoelectronic component is disposed in the interior cavity. An optical fiber extends between a first end positioned adjacent the optoelectronic component and a second end positioned adjacent the optically-transmissive housing component. The optical fiber defines a non-linear optical path between the first end and the second end. At least a portion of the optical fiber is laterally offset from a lateral edge of the display.

Abstract: A fiber optic tray system includes a tray. The tray includes a tray body, the tray body extending along a longitudinal axis between a front and a rear and extending along a lateral axis between a first side and a second side. The tray further includes a plurality of alignment rails, each of the plurality of alignment rails protruding from the tray body along a transverse axis. The tray further includes a plurality of retainer features disposed at the rear of the tray body. The fiber optic tray system further includes a fiber optic module, the fiber optic module including an outer housing and at least one retainment feature. The at least one retainment feature is interfaced with at least one of the plurality of retainer features to retain the fiber optic module on the tray.

Abstract: An optical fiber connector assembly comprises at least one connector having a latching arm for coupling to an adapter, and a remote release tab having a protrusion configured to cooperate with the adapter to depress said latching arm when the remote release tab is pulled relative to the adapter. The optical fiber connector assembly may further be configured to allow reversing its polarity.

Abstract: A push-pull connection includes a push-pull boot connector and an adapter, which are connected together and retained with a latching mechanism. The push-pull boot connector includes a connector housing and a remote release push-pull strain relief boot. The connector housing, when pulled away from the mating face of the adapter, via the strain relief boot, will detach the latching mechanism.

Abstract: A connector closure for fiber optical cables includes a base portion having first and second compartments. One of the first and second compartments is designed to have a cover or door that allow selective access, while the other compartment signed for only authorized access. The connector closure features universal mounting arrangements, e.g., aerial, surface/wall, pedestal, or vault arrangements. Further, the closure may incorporate a splice enclosure.

Abstract: Embodiments of the present disclosure are directed to techniques for manufacturing an eyepiece (or eyepiece layer) by applying multiple, different diffraction gratings to a single side of an eyepiece substrate instead of applying different gratings to different sides (e.g., opposite surfaces) of the substrate. Embodiments are also directed to the eyepiece (or eyepiece layer) that is arranged to have multiple, different diffraction gratings on a single side of the eyepiece substrate. In some embodiments, two or more grating patterns are superimposed to create a combination pattern in a template (e.g., a master), which is then used to apply the combination pattern to a single side of the eyepiece substrate. In some embodiments, multiple layers of patterned material (e.g., with differing refraction indices) are applied to a single side of the substrate. In some examples, the combined grating patterns are orthogonal pupil expander and exit pupil expander grating patterns.

Abstract: An optical module that has a structure ensuring reduction in size. The optical module has a structure where a part of a fiber block is protruded from a housing. By including a thin plate, this optical module can avoid entering of dust in the housing, allows a position shift of the fiber block due to a mounting position error of an optical component in the housing, a position shift of an opening portion due to a dimensional error of the housing, or a displacement due to a temperature change, and can reduce the coupling loss due to the optical axis misalignment.