Abstract: An optical ferrule assembly includes a hybrid optical ferrule having a glass portion assembled to a polymeric portion. The polymeric portion includes a groove for receiving and supporting an optical fiber having opposing open front and back ends. A light redirecting member includes an input surface for receiving light from the optical fiber and a light redirecting side. The open back end of the groove and the input surface define a recessed region therebetween. The glass portion includes an optically transparent glass insert disposed in the recessed region conforming in shape to an internal shape of the recessed region. An optical fiber is received and supported in the groove. The optical fiber includes a fiber end laser welded to the glass insert so that a central light ray from the optical fiber propagates through the glass insert before being received and redirected by the light redirecting side.

Abstract: An optical assembly includes stacked planar lightwave circuit (PLC) members each having a plurality of waveguides in a respective plane, to provide optical connections to two-dimensional arrays of external optical waveguides (e.g., optical fiber cores), with one array including non-coplanar groups of waveguides having group members that are alternately arranged in a lateral direction. An optical assembly may provide optical connections between array of cores having a different pitch and/or orientation to serve as a fanout interface. Methods for fabricating an optical assembly are further provided.

Abstract: A predistorter for an electro-optical converter includes a plurality of low noise RF amplifiers distributed along a transmission line that receive an RF input. Second order intermodulation injection (IM2) circuitry includes an inductively-degenerated frequency doubler to square and filter IM2 products of the RF input. A Mach-Zehnder Modulator (MZM) is used for electro-optical conversion. Feed forward circuitry injects IM2 to independently propagate RF intermodulation components with velocity matching to the MZM. At least one driver injects the RF input and RF intermodulation components into the MZM.

Abstract: An optical cable includes a main body and a termination segment extending from an end of the main body. The main body includes middle portions of optical fibers. The termination segment includes end portions of the optical fibers and multi-fiber connectors attached to the end portions of the optical fibers. The multi-fiber connectors are staggered along a length of the termination segment.

Abstract: Fiber optic connectors comprising multiple footprints along with 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. The fiber optic connector may be converted from a first footprint to a second footprint by a conversion housing that fits about a portion of the housing. The optical connectors disclosed may be tunable for improving optical performance and may also include a spring for biasing the ferrule to a forward position as desired.

Abstract: A multi-chip photonic assembly includes first and second photonic integrated circuits having first and second waveguides vertically stacked such that first vertical dimensions of the first and second waveguides occupy different horizontal planes in the stack. At least one of the first and second waveguides has a region that has a second vertical dimension that is larger than the first vertical dimension and either horizontally overlaps the other waveguide and/or vertically contacts the other waveguide. Light moving through one of the waveguides from the first vertical dimension to the other vertical dimension changes modes vertically so that the light moves from one waveguide to the other.

Abstract: A fiber optical connector assembly with a crimp tube assembly improves tensile load on the optical fiber cable or microduct jacket when the connector assembly is used as part of an optical network that is secured between towers spaced apart 1,000 meters or more. The crimp tube assembly has one or more crimp zones, and the crimp tube assembly has a lip formed on an inner surface of the crimp right assembly to improve tensile strength when the crimp tube assembly is secured to a back post of a first fiber optic connector assembly that is air blown or push through a duct or conduit. An epoxy resin may be injected into a cavity between the cable jacket and the crimp tube assembly to improve tensile load strength.

Abstract: The present invention provides an optical connector comprising an optical receptacle, a coupling terminal, and a coil structure, wherein the optical receptacle has an accommodation space and a positioning structure, the coupling terminal is arranged into the accommodation space, and the coil structure has a first fixing coil and an elastic coil wherein the coupling terminal is inserted into the elastic coil and the first fixing coil is arranged onto the positioning structure.

Abstract: Fiber optic connectors comprising multiple footprints along with 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. The fiber optic connector may be converted from a first footprint to a second footprint by a conversion housing that fits about a portion of the housing. The optical connectors disclosed may be tunable for improving optical performance and may also include a spring for biasing the ferrule to a forward position as desired.

Abstract: A connector includes a first light transmission part and a second light transmission part, and when the connector is connected to an optical component, observing, by using the first light transmission part and the second light transmission part on an equipment room side, a detection light to identify the connector, and identifying an output port through which a user-side optical network unit (ONU) is connected to an equipment-room-side splitter.

Abstract: Provided are (i) a fiber-optic cable having a cable sheath that enables significant changes in the cable's cross-sectional shape when the cable is bent and (ii) a raceway that can be used to deploy such a fiber-optic cable.

Abstract: A terminal closure to enclose a drop connection. A closure base and a closure cover mate to define an interior space of the terminal closure. A movable cap is located on the closure cover. While in a closed position, the cap and an associated portion of the closure cover bound a volume. A grommet is located within the volume. The grommet includes an internal bore to receive a plug or a drop cable. The grommet has an outer periphery boundary that is at least as large as the volume bounded by the cap and the portion of the closure cover such that the grommet is sealingly engaged by the cap and the portion of the closure cover when the cap is in the closed position. There may be a plurality of port openings arranged in rows, each row being at a respective, different distance from a mount side wall.

Abstract: Fiber optic connectors comprising compact footprints along with 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. The optical connectors disclosed may be tunable for improving optical performance and may include a spring for biasing the ferrule to a forward position as desired.

Abstract: A hermetic optical fiber alignment assembly includes a ferrule portion having a plurality of grooves receiving the end sections of optical fibers, wherein the grooves define the location and orientation of the end sections with respect to the ferrule portion. The assembly includes an integrated optical element for coupling the input/output of an optical fiber to the opto-electronic devices in the opto-electronic module. The optical element can be in the form of a structured reflective surface. The end of the optical fiber is at a defined distance to and aligned with the structured reflective surface. The structured reflective surfaces and the fiber alignment grooves can be formed by stamping.

Abstract: An object of the present invention is to provide a versatile optical fiber lateral output device that can deal with various types of optical fiber core wires. An optical fiber input-output device according to the present invention includes: a first jig 11 including a recess portion 22 and an optical input-output means 51; a second jig 12 including a projection portion 23 and a guide groove 24; and a pressing unit 14 configured to apply a pressing force in a direction in which the recess portion 22 of the first jig 11 and the projection portion 23 of the second jig 12 approach each other so as to bend an optical fiber core wire 100. Letting R1 be a curvature radius of the recess portion 22 of the first jig 11, ?1 be a central angle of the recess portion 22, R2 be a curvature radius of the projection portion 23 of the second jig 12, and ?2 be a central angle of the projection portion 23, R2?R1 and ?2??1 are satisfied.

Abstract: In a connector for terminating a cable, a connector housing has a rear end portion including a first shoulder. An inner connector assembly is received in the connector housing. The inner connector assembly includes at least one ferrule exposed and a back body with a back post. At least one strength member is secured to the back post. A rear bracing member is received in the connector housing. The rear bracing member has a front end portion and a rear end portion spaced apart along the longitudinal axis. The front end portion of the rear bracing member is configured to engage the back body and the rear end portion of the rear bracing member is configured to engage the first shoulder of the connector housing such that the rear bracing member substantially braces the back body against rearward displacement along the longitudinal axis relative to the connector housing.

Abstract: An optical multiplexing circuit capable of accurately monitoring light of a plurality of wavelengths is provided.

Abstract: A fiber optic connector has at least two optical fibers therein have end faces that are positioned such that they are directed in different directions. The end faces can be oriented relative to a key that is provided on a fiber optic connector housing that has a central opening in the main body of the fiber optic connector.

Abstract: An object is to provide a highly versatile local-light detection apparatus for an optical fiber capable of supporting various types of coated optical fibers.

Abstract: An adapter block assembly includes an adapter block, a circuit board arrangement, and a cover attached to the adapter block so that the circuit board arrangement is held to the adapter block by the cover. Contact assemblies can be disposed between the adapter block and the circuit board arrangement. The cover can be latched, heat staked, or otherwise secured to the adapter block. Each component of the adapter block assembly can include one or more parts (e.g., multiple adapter blocks, multiple circuit boards, and/or multiple cover pieces).