Abstract: Optical alignment between an optical waveguide device and an optical connection part is realized easily and at low cost. An optical circuit in which optical waveguides to be connected to optical fibers are formed includes: an alignment optical waveguide configured to be opposed to, on an optical waveguide edge face to which an optical connection part having guide holes for insertion of core wires of the optical fibers is to be fixed, a guide hole into which an alignment optical fiber is to be inserted; and a light path changing member configured to change a path of light to a vertical direction with respect to the optical axis direction of the core of the alignment optical waveguide.

Abstract: An integrated tunable waveguide element includes: a cladding. A high k dielectric layer is disposed within the cladding. At least one waveguide is disposed adjacent to the high k dielectric layer. At least one two dimensional monolayer pad is disposed on or in the high k dielectric layer adjacent to a portion of the at least one waveguide. An integrated 2×2 array element is also described.

Abstract: An embodiment optical body is provided in a propagation path of light between a Si waveguide and an optical fiber. The optical body changes a course of some of radiation mode light, which is emitted from the Si waveguide and propagates in a direction away from an optical axis thereof, to obtain waveguide mode light passing through itself. Thus, the amount of waveguide mode light incident on the optical fiber increases, and the coupling efficiency between the Si waveguide and the optical fiber is improved.

Abstract: Described herein are photonic communication platforms that permit use by multiple users in a secure way. A platform comprises a substrate, a first photonic circuit monolithically integrated with the substrate, and a second photonic circuit monolithically integrated with the substrate. The first photonic circuit is patterned with a first plurality of photonic modules, the photonic modules of the first plurality being copies of a common template photonic module The second photonic circuit is patterned with a second plurality of photonic modules, the photonic modules of the second plurality being copies of the common template photonic module. A photonic link couples the first photonic circuit to the second photonic circuit. A controller optically isolates the first photonic circuit from the second photonic circuit by optically interrupting the photonic link.

Abstract: An optical modulator includes a relay substrate having signal conductor patterns that connect signal input terminals and signal electrodes of an optical modulation element and ground conductor patterns, and a housing, in which the signal conductor pattern includes a component mounting portion including an electrical circuit element. Two ground conductor patterns sandwiching the signal conductor pattern are formed in an asymmetrical shape in a plan view within a component mounting area having a square shape in the plan view centered on the component mounting portion. A direction of a side of the component mounting area having the square shape is same as the extending direction of the signal conductor pattern and a length of a side of the component mounting area is equal to a distance from a center of the component mounting portion to a portion on an adjacent signal conductor pattern closest to the center.

Abstract: A distributed fiber-optic acoustic sensing system and a signal processing method. The distributed fiber-optic acoustic sensing system is based on a high spatial resolution distributed fiber-optic acoustic sensor. The interval between adjacent sensing units is centimeter or millimeter level. Through specific digital signal processing, signal enhancement can be realized, noise in the system and environment are suppressed, at the same time, problems such as interference fading is solved, and the sensor signal-to-noise ratio of subunits can be increased by two to three orders of magnitude. Each subunit can serve as an independent high-sensitivity sensor for sensing. The multiple subunits can form one or more new sensor arrays. The azimuth estimation and spatial orientation of signal sources can be realized by the array signal processing method.

Abstract: An outdoor optical fiber splicing box, a cable storage structure is fixed at the bottom of the inner cavity, a plurality of wiring structures are stacked on the upper side of the cable storage structure, and two sides of the wiring structure are provided with a multi-fiber supporting mechanism and a single-fiber supporting mechanism, which are fixed at the bottom of the inner cavity. The single-fiber and multi-fiber supporting mechanisms are all arranged on the side of the wiring structure. The box body is provided with a first and a second cable inlet/outlets, and the first cable inlet/outlet is provided with a single optical fiber waterproof structure. The second cable inlet/outlet is provided with a multi-fiber waterproof structure, and the waterproof effect is good. At the same time, the single-fiber and multi-fiber supporting mechanisms can protect the optical fiber cable from vibration, impact, cable stretching, and twisting.

Abstract: A package includes a photonic layer on a substrate, the photonic layer including a silicon waveguide coupled to a grating coupler; an interconnect structure over the photonic layer; an electronic die and a first dielectric layer over the interconnect structure, where the electronic die is connected to the interconnect structure; a first substrate bonded to the electronic die and the first dielectric layer; a socket attached to a top surface of the first substrate; and a fiber holder coupled to the first substrate through the socket, where the fiber holder includes a prism that re-orients an optical path of an optical signal.

Abstract: The present disclosure provides an acousto-optic device comprising an acousto-optic layer, an electromagnetic radiation source, and an acoustic source. In an embodiment, the acousto-optic layer has a substantially planar shape defining an x-y plane and functions as an optical waveguide to optical waves and as an acoustic waveguide to acoustic waves propagating in the x-y plane. In an embodiment, the electromagnetic radiation source is optically coupled to the acousto-optic layer and configured to deliver electromagnetic radiation therein. In an embodiment, the acoustic source is acoustically coupled to the acousto-optic layer and configured to deliver acoustic energy therein and is configured to adjust a wavelength of the acoustic energy. In an embodiment, the electromagnetic radiation source and the acoustic energy source are positioned to provide an intersection between the electromagnetic radiation and the acoustic energy, which at least partially scatters light from the intersection out of the x-y plane.

Abstract: Described herein is a detector for determining a position of at least one object. The detector includes: at least one transfer device; at least one illumination source adapted to generate at least one light beam for illuminating the object; at least one first optical receiving fiber and at least one second optical receiving fiber; at least two optical sensors; and at least one evaluation device being configured for determining at least one longitudinal coordinate z of the object by evaluating a combined signal Q from the sensor signals.

Abstract: A color-light generation system includes a light source emitting first and second area light beams, a reflective grating receiving the first and second area light beams and then generating first and second area reflected light beams, an array optical switch including first and second areas receiving the first and second area reflected light beams respectively, a light mixer including a light mixer first area and a light mixer second area receiving a light beam from the first area and a light beam from the second area respectively, and a controller electrically connected to the array optical switch and controlling the array optical switch, so that the light mixer first area outputs a first color light, and the light mixer second area outputs a second color light. A method of using the system is also provided.

Abstract: An optical element includes a first condensing lens and a plurality of second condensing lenses. The optical element is disposed so as to face an end of an optical fiber. The optical fiber includes a core, a first cladding located around the core, and a second cladding located around the first cladding. The first condensing lens is disposed at a position corresponding to the core. The second condensing lenses are disposed around the first condensing lens at positions corresponding to the first cladding.

Abstract: An optical receptacle includes a first optical surface, a second optical surface, and an annular first cylindrical part disposed to surround a second central axis of the second optical surface. The first cylindrical part includes a first inner surface with a circular shape in a cross section perpendicular to the second central axis, and a second inner surface disposed on a second optical surface side than the first inner surface and provided with a circular shape in the cross section perpendicular to the second central axis. A diameter of the first inner surface is greater than a diameter of the second inner surface, and a length of the second inner surface in a direction along the second central axis is 0.5 to 4.0 mm.

Abstract: A lightweight stacked optical waveguide using two plastic substrates having nano-structure gratings and a single glass substrate sandwiched between them. The nano-structure gratings face each other, and are each encapsulated within the optical waveguide. The two plastic substrates are each adhesively secured to the central glass substrate rather than to each other to provide sufficient securing strength and precisely establish and maintain an air gap between the substrates. The thickness of the plastic substrates and the glass substrate are selected such that the stacked optical waveguide is lightweight, but also has sufficient drop performance. The stacked optical waveguide can be efficiently manufactured as the adhesive bonds a plastic substrate to a glass substrate.

Abstract: An optical rotary joint includes a first annular portion and a second annular portion configured to rotate with respect to each other. Optical receivers on a receiver face of the second annular portion receive from optical transmit beam launchers on an emitter face of the first annular portion. The transmit beam launchers transmit optical signals to the optical receivers as the second annular portion rotates with respect to the first annular portion.

Abstract: Fiber optic connectors, cable assemblies and methods for making the same are disclosed. In one embodiment, the optical connector comprises a housing and a ferrule. The housing comprises a longitudinal passageway between a rear end and a front end, and, a part of the rear portion of the housing comprises a round cross-section and a part of the front portion of the housing comprises a non-round cross-section with a transition region disposed between the rear portion and the front portion.

Abstract: The present invention relates to a rapid optical fiber link restoration solution rapidly deployed by pulling, blowing, jetting or hanging in an aerial, on-ground, underground or inside a duct includes an optical fiber connector and an optical fiber cable. The optical fiber connector is connected at both ends of the optical fiber cable. Particularly, the optical fiber cable is dielectric and has a tensile strength 2500 N and a crush resistance of 2000 N/100 mm. Moreover, the optical fiber connector has water resistance for 1.5 meters of water-head for a maximum period of 30 minutes.

Abstract: Configurations for an optical splitter are disclosed. The optical splitter may include an input waveguide, a free propagation region, and an array of output waveguides. The input waveguide may be sufficiently narrow that the light in the free propagation region may diffract and provide the same optical intensity at far field angles across a wide wavelength range. The input waveguide may have a high V number in a vertical dimension and a low V number in a horizontal dimension. Because all of the wavelengths of light diffract at the same angle in the free propagation region, once the light reaches the output waveguides, the light may have similar optical power at each of the output waveguides. Additionally, the output waveguides may vary in width and spacing to mitigate the non-uniform optical power distribution of the phase front of light.

Abstract: An optical fiber connector is provided. A receptacle has an angled interior surface that acts to guide an optical fiber into the correct position as a jack is inserted into the receptacle.

Abstract: The present disclosure provides a connection assembly, a cable plug and a cable assembly. The connection assembly comprises: a core base, configured to fix an end of a cable and comprising a first clamping portion; and a first fixing member, arranged with at least one second clamping portion and defining a first recess in an axial direction; wherein the first recess is configured to laterally accommodate a first portion of the cable different from the end of the cable, and the at least one second clamping portion is configured to fix the core base by directly or indirectly cooperating with the first clamping portion.