Abstract: A structured surface reduces optical reflectance at a predetermined wavelength in a first wavelength range extending from 600 nm to 1700 nm. The structured surface includes a plurality of parallel linear structures arranged along a first direction and extending along an orthogonal second direction. Each linear structure includes opposing nonlinear facets meeting at a peak extending along the second direction. An average spacing between the peaks of adjacent linear structures is less than the predetermined wavelength, such that for light having the predetermined wavelength and incident on the structured surface in a direction substantially perpendicular to the first and second directions, the structured surface has a reflectance Rx<0.5% for light polarized along the first direction and a reflectance Ry<0.5% for light polarized along the second direction, where an absolute value of Rx?Ry is less than 0.3%. An optical ferrule may have an exit surface that includes the structured surface.

Abstract: A telecommunications enclosure extender couples a first telecommunications enclosure to a second telecommunications enclosure. The extender has enlarged heads that mount at seal arrangement mounting locations of the first and second telecommunications enclosures.

Abstract: Passive optical couplers having passive optical activity indicators and methods of operating the same are disclosed. An example passive optical coupler for passively coupling first and second optical fibers includes a housing including: a first port configured to receive an end of a first optical fiber, and a second port configured to receive an end of a second optical fiber; and a passive optical activity indicator positioned at least partially within the housing, wherein a first portion of the passive optical activity indicator is exposed through the housing, and wherein the passive optical activity indicator is configured to passively illuminate in response to (i) first light propagating in the first optical fiber when the end of the first optical fiber is received in the first port, and (ii) second light propagating in the second optical fiber when the end of the second optical fiber is received in the second port.

Abstract: A fiber optic adaptor includes a main shell body and an outer cover. The main shell body has a first end portion and a second end portion. The first end portion defines a first opening and is formed with two engaging grooves. The outer cover is removably disposed on and covering the first end portion, and has a cover body portion, two locking clips, and an identifier portion. The two locking clips protrudes from the cover and respectively engage the engaging grooves. The identifier portion is disposed on the cover body portion. The locking clips are operable to be removed respectively from the engaging grooves. The cover body portion defines a port outer opening, and a port key portion.

Abstract: An optical device includes a waveguide including a first medium, which is transparent and has a first index of refraction at a target wavelength and which has mutually-parallel first and second surfaces arranged so that light at the target wavelength propagates within the waveguide by internal reflection between the first and second surfaces. A coupling layer is disposed over the first surface of the waveguide and includes a second medium having a second index of refraction at the target wavelength, which is greater than the first index of refraction, and is patterned to define a periodic array of cylinders, which have respective cylinder axes perpendicular to the first surface and have respective heights and diameters that are smaller than the target wavelength, and which are spaced apart such that a distance between each of the cylinders and a neighboring cylinder in the array is less than the target wavelength.

Abstract: Disclosed herein are systems and architecture for thermal waveguide-based phase shifters which improve thermal efficiency by having multi-pass waveguides arranged under the heating element in a serpentine fashion, with the waveguides having mismatched propagation constants. The combination allows for an increase in phase shift without increasing the length or the power consumption of the resistive heating element by increasing the total length of waveguide being heated by a singular heating element.

Abstract: An optical device includes: a base that includes a main surface; a movable unit that includes an optical function unit; and an elastic support unit that is connected between the base and the movable unit, and supports the movable unit so that the movable unit is movable along a first direction perpendicular to the main surface. The elastic support unit includes a lever, a first torsion support portion that extends along a second direction perpendicular to the first direction and is connected between the lever and the movable unit, and a second torsion support portion that extends along the second direction and is connected between the lever and the base. A torsional spring constant of the first torsion support portion is greater than a torsional spring constant of the second torsion support portion.

Abstract: A delivery fiber assembly suitable for delivering broad band light and including a delivery fiber and a connector member. The delivery fiber has a length, an input end for launching light, and a delivery end. The delivery fiber includes along its length a core region and a cladding region surrounding the core region, the cladding region includes a cladding background material having a refractive index Nbg and a plurality of microstructures in the form of inclusions of solid material having refractive index up to Ninc and extending in the length of the longitudinal axis of the delivery fiber, wherein Ninc<Nbg. The plurality of inclusions in the cladding region is arranged in a cross-sectional pattern including at least two rings of inclusions surrounding the core region. The connector member is mounted to the delivery fiber at a delivery end section of the delivery fiber including the delivery end.

Abstract: A device may provide, to a user device, a first message instructing a technician to move fiber cables and may receive a first signal based on the technician moving the fiber cables and a rest signal based on the technician stopping movement of the fiber cables. The device may calculate a distance, an average peak signal, and a baseline signal based on the first signal and the rest signal and may calculate a data collection window based on the distance, the average peak signal, and the baseline signal. The device may provide, to the user device, a second message instructing the technician to move one fiber cable at a time and may receive second signals based on the technician moving one fiber cable at a time. The device may provide, for display to the user device, the data collection window and indications of the second signals.

Abstract: A method for manufacturing a fan-in-fan-out device which does not require processing of a small-diameter hole and improves work efficiency of installation of an optical fiber, includes: arranging a first holding member in a hole of a second holding member, the hole being larger than an outer diameter of the first holding member, and holding a plurality of optical fibers between the first holding member and the second holding member respectively along a plurality of grooves formed on an outer periphery of the first holding member or an inner periphery of the hole of the second holding member; heating and integrally melting the arranged first holding member, the plurality of held optical fibers, and the second holding member in a portion including an axial end portion of the second holding member; and drawing the melted portion.

Abstract: Embodiments are disclosed for providing a silicon photonics collimator for wafer level assembly. An example apparatus includes a silicon photonics (SiP) device and a micro-optical passive element. The SiP device comprises a set of optical waveguides. The micro-optical passive element is mounted on an edge of a cavity etched into a silicon surface of the SiP device. Furthermore, the micro-optical passive element is configured to direct optical signals between the set of optical waveguides and an external optical element.

Abstract: A cassette module has three 16 fiber MPOs and four 12 fiber MPOs wherein each 16 fiber MPO has 4 fiber receiving areas with four fibers going to each fiber receiving area and each 12 fiber MPO has 3 fiber receiving areas with four fibers going to each fiber receiving area. Fibers are routed from certain areas of the 16 fiber MPOs to those of the 12 fiber MPOs in order to convert a base 12 communication system to a base 16 communication system.

Abstract: Disclosed are fiber optic assemblies for handling mini duplex connectors (MDC) including a rack-mountable chassis, independent sliding trays disposed in the chassis, and a plurality of MDC modules removably installable in the sliding trays. Each MDC module includes protruding features configured to interact with tray guides having corresponding features that permit vertical installation of the modules in the trays while preventing horizontal translation and rotational motion of the installed MDC modules. MDC modules may have various configuration, for instance MTP module, patching module and pre-terminated tailed module configurations. The assemblies and components disclosed herein maximize connections densities of MDC connectors while improving access thereto in high density applications.

Abstract: Embodiments of the disclosure provide an optical polarizer with a varying vertical thickness, and methods to form the same. An optical polarizer according to the disclosure may include a first waveguide core over a semiconductor substrate. A first cladding material is on at least an upper surface of the first waveguide core. A second waveguide core over the first waveguide core and above the first cladding material. The second waveguide core includes a first segment having a vertical thickness that varies along a length of the first segment. A second cladding material is at least partially surrounding the second waveguide core. Transfer of one of a transverse electric (TE) mode signal and a transverse magnetic (TM) mode signal from the first waveguide core to the second waveguide core occurs between the first segment of the second waveguide core and the first waveguide core.

Abstract: Fiber optic cable assemblies and methods of fabrication are disclosed. In one embodiment, a fiber optic cable assembly includes a fiber optic cable and a connector assembly. The connector assembly includes a connector body having a body passageway and a body aperture. The connector assembly further includes a crimp ring, a crimp body and a locking element. The crimp ring includes a first end, a second end, a crimp ring passageway, and a crimp ring aperture. The crimp body includes a crimp body passageway and one or more crimp features. The crimp body is crimped to the cable jacket such that the strength members wrap around the cable jacket and are disposed between the crimp body and the cable jacket. The second end of the crimp ring is crimped to the crimp body. The locking element is disposed within the body aperture and the crimp ring aperture.

Abstract: A method for terminating a fiber optic ferrule included applying a force to a fiber optic ferrule while simultaneously holding the optical fibers. The fiber optic ferrule uses epoxy to hold the optical fibers, the epoxy can be either heat or light cured. The force is applied through a pusher that engages a cap on the front end of the fiber optic ferrule.

Abstract: A fiber enclosure with an integrated enclosure mounting system includes a base, a cover, and a clamp for securing the cover to the base. The base has an end wall with through openings extending therethrough and has a fiber management mounting frame provided on an inner side of the end wall. The mounting frame is configured to receive fiber management trays and the cover is engageable over the mounting frame and into abutment with the base and is securable to the base by the clamp to fully enclose the mounting frame and fiber management trays within a cavity formed between the cover and the base. The base also includes enclosure mounting sockets formed on an outer side surface thereof. The enclosure mounting sockets are releasably engageable with complementary shaped mounting post provided on a mounting arm to releasably secure the base to the mounting arm.

Abstract: The present disclosure relates to system and method for cleaning an end face of a bare optical fiber (100). The system and methods include inserting the end face of the bare optical fiber (100) through a layer of material (500) that includes electrospun fibers.

Abstract: Driving an optical modulator is described. A control circuit generates first and second input voltages based on a target phase modulation between first and second optical waveguide arms of the optical modulator. An offset control circuit generates first and second offset signals. A linear modulator driver receives the first and second offset signals, generates a first output voltage for biasing the first optical waveguide arm using the first offset signal, and generates a second output voltage for biasing the second optical waveguide arm using the second offset signal. Feedback circuitry can feed the first and second output voltages to the offset control circuit, which can generate the first and second offset signals using the first and second output voltages. The output voltages bias the waveguide arms so the optical modulator operates close to the target phase modulation, even in the presence of manufacturing errors.

Abstract: Apparatus, circuits and methods for reducing mismatch in an electro-optic modulator are described herein. In some embodiments, a described optical includes: a splitter configured for splitting an input optical signal into a first optical signal and a second optical signal; a phase shifter coupled to the splitter; and a combiner coupled to the phase shifter. The phase shifter includes: a first waveguide arm configured for controlling a first phase of the first optical signal to generate a first phase-controlled optical signal, and a second waveguide arm configured for controlling a second phase of the second optical signal to generate a second phase-controlled optical signal. Each of the first and second waveguide arms includes: a plurality of straight segments and a plurality of curved segments. The combiner is configured for combining the first and second phase-controlled optical signals to generate an output optical signal.