Abstract: A waveguide increases the optical path of a portion of light received from a coherent light source. The waveguide includes a first element that allows light from an exit pupil of a coherent light source to enter the waveguide, and a second element that directs some of the entered light to exit the waveguide through a first set of pupils. The waveguide includes additional elements that cause the remaining light to make an additional path through the waveguide and the second element before exiting through a second set of pupils to increase the path of the exiting light. The pupils of the first set and the second set are staggered so that light exiting a pupil does not interfere with the light exiting via the neighboring pupils.

Abstract: A circuit board with a conductor path having a recess, an implant with left, right, lower and upper edges arranged in the recess, where the implant has first and second optical layers, a second optical layer and a conductor arranged between them, the first and the second optical layer each have at least one light-conducting structure with first and second ends, where a light-conductor is arranged in a right edge of the implant, in which respective second ends of the light-conducting structures are located, such that light fed in at the first end of the optical fiber of the first optical layer is deflected to the second end of the light-conducting structure of the second optical layer such that a beam path of the light encompasses the conductor, and the circuit also includes an optical transmitter and an optical receiver with and evaluator that form a fiber optic current sensor.

Abstract: A track system for routing an optical fiber includes a track for selectively retaining the optical fiber therein, a cover piece which is mounted to the track, and a corner piece which is mounted to the track. The track is formed as an elongated member and includes a pair of legs that are spaced apart from each other to define a slot and an internal channel into which the optical fiber is received. The cover piece is mountable to the track to help retain the optical fiber in the track.

Abstract: An optical fiber with low attenuation and methods of making same are disclosed. The optical fiber has a core, an inner cladding surround the core, and an outer cladding surrounding the inner cladding. The outer cladding is chlorine-doped such that the relative refractive index varies as a function of radius. The radially varying relative refractive index profile of the outer cladding reduces excess stress in the core and inner cladding, which helps lower fiber attenuation while also reducing macrobend and microbend loss. A process of fabricating the optical fiber includes doping an overclad soot layer of a soot preform with chlorine and then removing a portion of the chlorine dopant from an outermost region of the overclad soot layer. The soot preform with the modified chlorine dopant profile is then sintered to form a glass preform, which can then be used for drawing the optical fiber.

Abstract: Back scattering in an optical waveguide at an operating wavelength is controlled by adjusting an optical phase of light propagating in the waveguide at one or more locations along the waveguide. A portion of the back scattered light is tapped off near an input port and coupled into a photodetector. A controller detects changes in the photodetector signal and adjusts an optical phase tuner configured to control the optical phase of light in the waveguide at the selected location or locations. The optical phase tuner may be configured to vary the refractive index of at least a portion of the waveguide.

Abstract: Discrete light fiber inputs for high powered image projector display systems are disclosed herein. Various embodiments disclosed herein may employ a bundle of light fiber inputs, a diffuser and reducing relay optic to convert the fiber input array into a smaller pattern of spots that may be interfaced to a projector display system that may perform light recycling. Many embodiments herein may facilitate higher power laser light for illumination and, possibly, recycling. In these embodiments, laser fibers may be individually collimated and illuminate a diffuser. The diffuser spots may be then imaged through a common path relay that can be resized to allow room for the individual lasers and collimation lenses. The diffuser spots may be imaged through holes in a mirror that is on the input side of an integration rod which recycles the light.

Abstract: The present invention generally relates to the field of fiber optics, and more particularly, to apparatuses, systems, and methods directed towards improving effective modal bandwidth within a fiber optic communication environment. In an embodiment, a multimode optical fiber in accordance with the present invention comprises a core and cladding material system where the refractive indices of the core and cladding are selected to modify the shape of the profile dispersion parameter, y, as a function of wavelength in such a way that the alpha parameter (?-parameter), which defines the refractive index profile, produces negative relative group delays over a broad range of wavelengths. The new shape of the profile dispersion parameter departs from traditional fibers where the profile dispersion parameter monotonically decreases around the selected wavelength that maximizes the effective modal bandwidth (EMB).

Abstract: A composite optical fiber assembly of quartz and plastic, an identification method and an identification device are disclosed. The composite optical fiber assembly of quartz and plastic includes a quartz optical fiber, a connector of the quartz optical fiber, at least two plastic optical fibers, and connectors of plastic optical fibers respectively corresponding to the at least two plastic optical fibers. The plastic optical fibers are laid on the quartz optical fiber. With the structure, whether the connectors at the two ends are properly connected can be intuitively inspected by eyes and displayed.

Abstract: A fiber optic connector and cable assembly includes a cable with one or more strength members secured to a connector that is connectable to both a hardened and a non-hardened fiber optic adapter. The cable can include multiple cable types with various shapes and strength member configurations. The connector includes a connector housing having a one-piece main body and a cover piece mounted thereon. The one-piece main body defines a plug portion compatible with the adapters. A ferrule assembly is mounted in the plug portion and biased outwardly by a spring. An insert within the connector housing includes a spring stop for holding the spring and a cable retention portion for securing the strength members of the cable. The spring stop and the cable retention portion can be included on a one-piece insert or they can separately be included on separate inserts.

Abstract: A single-mode optical fiber having an automatic control heat source specifically produced for hydraulic seepage measurement, sequentially includes a single-core optical fiber, an inner protective elastic layer, a heat insulation steel ring, an inner-layer filling protection ring, an elastic hard ring, and an anti-seepage heat insulation hard sleeve ring arranged from inside to outside.

Abstract: An optical module includes a first optical block, a second optical block, and a metal part. In a state that the metal part is assembled with the first optical block, the second optical block is sandwiched between the first optical block and the metal part. The metal part includes two spring pieces. The two spring pieces are along both lateral surfaces of the first optical block. Locking parts which are formed on both lateral surfaces of the first optical block are hooked on the two spring pieces. The second optical block is pressed against the first optical block in a direction, in which the metal part is assembled with the first optical block, by a spring force which is generated when the two spring pieces are hooked on the locking parts.

Abstract: An optical cable is provided. The optical cable includes a tubular, elongate body having an inner surface defining a cavity extending between first and second ends of the elongate body and an optical transmission element located with the cavity. The optical cable includes a coupling or bonding structure non-permanently and non-rigidly joining the outer surface of the optical transmission element to the elongate body at a plurality of periodic contact zones such that relative movement between the optical transmission element and the elongate body is resisted.

Abstract: An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light therein, and a diffractive optical element optically coupled to the waveguide. The diffractive optical element includes a plurality of first ridges protruding from a surface of the waveguide. Each of the plurality of first ridges has a first height and a first width. The diffractive optical element further includes a plurality of second ridges. Each of the plurality of second ridges protrudes from a respective first ridge and has a second height greater than the first height and a second width less than the first width. The diffractive optical element is configured to diffract a first portion of the light propagating in the waveguide toward the eye, and to diffract a second portion of the light propagating in the waveguide away from the eye.

Abstract: The present disclosure provides an optical fiber connector, comprising an integrated ferrule assembly and an integrated outer housing assembly, the ferrule assembly being adapted to be fitted into the housing assembly. The ferrule assembly at least comprises an inner housing, a spring, a multi-hole ferrule, a multi-fiber optical cable, a sleeve and a thermal shrinkable tube. The housing assembly at least comprises an outer housing, an outer tail tube and an outer protection cap.

Abstract: Forming an optical device includes growing an electro-absorption medium in a variety of different regions on a base of a device precursor. The regions include a component region and the regions are selected so as to achieve a particular chemical composition for the electro-absorption medium included in the component region. An optical component is formed on the device precursor such that the optical component includes at least a portion of the electro-absorption medium from the component region. Light signals are guided through the electro-absorption medium from the component region during operation of the component.

Abstract: A polarization scrambler based on Faraday magneto-optic effect is disclosed. A polarization control unit (2) is connected between a first rotator unit (1) and a second rotator unit (3). The first rotator unit (1) includes a first optical fiber circle (11) and a first wire coil (12). The second rotator unit (3) includes a second optical fiber circle (31) and a second wire coil (32). ACs with two frequencies f1 and f2 are respectively introduced into the first wire coil (12) and the second wire coil (32), such that the ACs in the two wire coils are changed to control the polarization angle in the two optical fiber circles to independently change within the range of +/?90°. The polarization control unit (2) can ensure motion trajectories of outputted light polarization pointsare in two orthogonal directions, thus achieving uniform polarization disturbance.

Abstract: A fiber optic ferrule includes on a rear surface thereof a pair of spring pads, each of the pair of spring pads having an engagement surface facing away from the fiber optic ferrule to engage a spring to eliminate off-axis moments. A fiber optic connector is also provided that uses the fiber optic ferrule. The engagement surface could be flat or rounded.

Abstract: A display includes a cover having a front face that defines a normal of the display and further having a sidewall that meets the front face to define an edge of the display, and a display module disposed behind the cover. The display module includes a substrate and a plurality of pixels supported by the substrate. The substrate includes a curved portion along the edge, the curved portion bending rearward such that peripheral pixels of the plurality of pixels are disposed laterally between the substrate and the sidewall. The display further includes edge compensation means for compensating for a curvature of the curved portion to direct light from the peripheral pixels toward the normal of the display. An extent to which the edge compensation means compensates for the curvature varies in accordance with lateral position of the peripheral pixels along the curved portion.

Abstract: An optical fiber includes an optical transmission medium having a core and a cladding; a primary resin layer disposed in contact with the optical transmission medium to coat the optical transmission medium; and a secondary resin layer coating the primary resin layer, wherein the primary resin layer comprises a cured product of an ultraviolet light curable resin composition comprising a urethane (meth)acrylate oligomer, a monomer and a photopolymerization initiator, and a compound containing phosphorus and tin as constituent atoms; and a Young's modulus of the primary resin layer is 0.5 MPa or less at 23° C.

Abstract: A reduced diameter composite microcable of low weight that is capable of withstanding a tensile load of at least 300 pounds with less than 0.6% fiber strain, is capable of operation between ?40 C and 70 C with less than 0.1 dB/km attenuation change at 1550 nm, and whose outer diameter is less than 15 mm is provided. The microcable includes at least one buffer tube, at least one electrical power conductor, at least one rigid strength member cabled together into a multi-unit core, wherein a plurality of optical fibers are placed within the at least one buffer tube.