Abstract: A cable arrangement includes first and second optical fiber ribbons both having first ends terminated at a first multi-fiber optical connector. The first ribbon includes a drop fiber routed to a drop interface and indexed fibers having ends indexed at a first row of a second multi-fiber connector. The second ribbon includes fibers having ends terminated at the second multi-fiber connector (e.g., at a second row of the second multi-fiber connector).

Abstract: Techniques for generating an arbitrary target electromagnetic signal with a nonlinear material, include determining a time varying target amplitude and target phase and an order n of a nonlinear material. For each time, a first set of nth roots of the target amplitude and a second set of nth roots of the target phase are determined. An input amplitude based on one value from the first set and an input phase based on one value from the second set is determined at each time. A difference between temporally successive values of phase is minimized. An electromagnetic signal is modulated to impose the input amplitude and phase to produce a modulated electromagnetic input signal that is introduced into the nonlinear material to produce a target electromagnetic signal.

Abstract: A telecommunications module defines an interior with separate right and left chambers. An optical component is housed within the left chamber. Signal input and output locations are exposed to the right chamber. The right chamber allows excess fiber to accumulate without bending in a radius smaller than a minimum bend radius. A dual-layered cable management structure is positioned within the right chamber that defines a lower cable-wrapping level and a separate upper cable-wrapping level. The upper cable-wrapping level is defined by a removable cable retainer mounted on a spool defining the lower-cable wrapping level. Cabling carrying the input and output signals are passed between the right and left chambers before and after being processed by the optical component.

Abstract: A ferrule with fiber holes includes: a resin-molded portion molded by a resin; and a reinforcement member embedded in the resin-molded portion and that has a smaller linear expansion coefficient than the resin-molded portion. The reinforcement member includes fiber insertion portions that are parallel to the fiber holes. The fiber holes are formed by the resin that entered the fiber insertion portions.

Abstract: A frequency conversion device, including a source of a pump beam of electromagnetic radiation of a first wavelength, and an array of mutually spaced semiconductor islands including at least one III-V semiconductor compound and configured so that the pump beam of electromagnetic radiation of the first wavelength incident upon the semiconductor islands and electromagnetic radiation of a second wavelength incident upon the semiconductor islands cause the semiconductor islands to emit electromagnetic radiation of a third wavelength different to the first and second wavelengths by at least one of a sum frequency generation process and a difference frequency generation process, wherein the semiconductor islands are supported by a transparent support such that the support is substantially transparent to radiation of the third wavelength, wherein at least the radiation of the third wavelength passes through the transparent support.

Abstract: Optical analytical devices and their methods of use are provided. The devices are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices include optical waveguides for illumination of the optical reactions. The devices further provide for the efficient coupling of optical excitation energy from the waveguides to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices of the invention are well suited for miniaturization and high throughput.

Abstract: In one embodiment, a waveguide includes an upstream portion, a downstream portion, and an intermediate portion between the upstream portion and the downstream portion. A first band is disposed on an insulating layer, the first band oriented along a first direction. A first lateral strip and a second lateral strip are disposed on either side of the first band, the first lateral strip and the second lateral strip being thinner or interrupted along the intermediate portion.

Abstract: Various implementations of epoxy transitions for fiber optic modules are disclosed. As disclosed herein, a fiber optic module system may include a fiber optic module holding a plurality of multi-fiber adapters at a front of the fiber optic module, a multi-fiber cable, and an epoxy transition to transition the multi-fiber cable to a plurality of individual optical fibers inside the fiber optic module. The epoxy transition may be filled with an epoxy to secure the individual optical fibers inside the epoxy transition.

Abstract: Described examples include a display having a first light source configured to provide a first light and a second light source configured to provide a second light. The display also having a spatial light modulator configured to produce a first modulated light by modulating the first light and configured to produce a second modulated light by modulating the second light. The display also having a first diffractive optical element configured to receive the first modulated light and configured to provide a first image having a first characteristic to display optics; and a second diffractive optical element configured to receive the second modulated light and configured to provide a second image having a second characteristic to the display optics.

Abstract: An object is to provide, for example, an optical wavelength conversion device capable of highly efficient wavelength conversion on the surface of, or inside, the main body of any of various shapes, such as a bulky shape and a fiber shape. The optical wavelength conversion device includes a main body configured to allow light to propagate therein, and a plurality of crystal regions arranged inside the main body along a propagation direction of the light. The plurality of crystal regions each have a spontaneous polarization oriented along the propagation direction (i.e., spontaneous polarization having a polarization orientation coinciding with the propagation direction).

Abstract: A method of generating an m photon entangled state includes inputting a photon into each of a first plurality of modes including first and second pairs of modes. The first plurality of modes is coupled with a second plurality of modes. Zero or more photons are detected in the second plurality of modes. The method includes, when more than m photons remain in the first plurality of modes: detecting zero or more photons in a third plurality of modes coupled with the first plurality of modes; determining, based on a number of photons detected, whether the photons remaining in the first plurality of modes are in the entangled state. The method includes, when the photons remaining in the first plurality of modes after the second detection operation are in the entangled state, outputting the photons remaining in the first plurality of modes.

Abstract: Provided is an optical multiplexing circuit. The waveguide width of each waveguide is set such that the effective refractive index of a first optical waveguide with a first light beam in the 0-th order mode is equal to the effective refractive index of a MM conversion waveguide with the first light beam in the higher order mode and that the effective refractive indexes of the MM conversion waveguide with second and third light beams in the higher order mode are not equal to the effective refractive indexes of a second optical waveguide with the second and third light beams in the 0-th order mode.

Abstract: An optical fiber holding device may comprise a first track and a second track. The first track may be configured to hold and guide a first optical fiber from a first track input location to a first track output location, wherein the first track is configured to allow the first optical fiber to connect to a first optical component and a first optical communication point. The second track may be configured to hold and guide a second optical fiber from a second track input location to a second track output location, wherein the second track is configured to allow the second optical fiber to connect to a second optical component and a second optical communication point.

Abstract: An imaging waveguide for a visual display includes a substrate for guiding image light therein by total internal reflection (TIR). An input grating is supported by the substrate for coupling the image light into the imaging waveguide. An output grating is supported by the substrate and spaced apart from the input grating for coupling the image light guided in the substrate out of the imaging waveguide for observation by a user. A gap filling overcoat is formed on and within the output grating, but not on or within the input grating. The material is characterized by a refractive index between 1.40 and 1.80 at 500 nm, absorption between 0% and 1% in the visible region of the electromagnetic spectrum, and % haze between 0% and 0.2% in the visible region of the electromagnetic spectrum.

Abstract: Methods, systems, and apparatus for generating Kerr frequency combs. The system includes a continuous-wave pump laser to provide a master comb pump. The system includes a microresonator that generates a master Kerr frequency comb using the master comb pump. The system includes a splitter that splits the master Kerr frequency comb into multiple CW comb lines including a first comb line used to transmit a data signal and a second comb line used as a slave comb pump. The system includes a combiner that is configured to combine the first comb line and the second comb line to produce a combination of a data channel and CW comb line. The system includes a second demultiplexer that extracts the second comb line that is used as the slave comb pump. The system includes another microresonator that uses the second comb line and generates a slave Kerr frequency comb.

Abstract: The present disclosure relates to a re-enterable enclosure for a fiber optic network. The enclosure can include features such as a low compression-force perimeter gasket, cable seals constructed to seal effectively seal triple points, multi-function port size reducer plugs and multi-function blind plugs.

Abstract: This disclosure provides a PSR-PWM technique for high power active front-end inverters to damp a specific inter-harmonic that may cause relative sub-synchronous resonance in power system. Due to the strong interaction between wind power converters, photovoltaic converters, FACTS devices and HVDC transmission, low-frequency oscillations occur from a few Hz to dozens of Hz, or even high-frequency oscillations ranging from about 300-2000 Hz. Meanwhile, low-frequency oscillations ranging from 0.6 Hz to 7 Hz occur in the power supply systems of many electric locomotives. Even in the case of large-scale train outage, low-frequency oscillation will lead to abnormal locomotive dispatching system; in addition, the power grid voltage disturbance and flicker caused by a large number of high-power are furnaces and other nonlinear loads in the industrial field with a passband inter-harmonic frequency ranging from 0.05 Hz-90 Hz and so on are detected.

Abstract: A optical fiber connecting device includes a hollow main body and a dust-proof unit. The hollow main body includes a first hollow inserting portion for insertion of a fiber optic connector, a second hollow inserting portion oppositely of the first hollow inserting portion, and a flange between the first and second hollow inserting portions. The second hollow inserting portion has a threaded outer surface. The dust-proof unit includes a dust-proof sleeve that has a threaded inner surface. The dust-proof sleeve is removably sleeved around the second hollow inserting portion by an inter-engagement of the threaded inner and outer surfaces.

Abstract: A pre-terminated end of a fiber optic cable has a protective cap that protects the optical fiber and the ferrule assembly at the terminal end. The protective cap has an attachment feature enabling a pull cord to attach to the protective cap. The protective cap has a body including an exterior surface and a receptacle formed in the body and configured to receive a portion of the fiber optic cable, and the attachment feature. The attachment feature includes a cavity formed in a tip of the body and at least two openings formed in the exterior surface of the body and connected to the cavity.

Abstract: Reconfigurable electro-optic frequency shifters are provided. In various embodiments, the optical frequency shifter comprises a continuous optical spectrum medium; a discrete optical spectrum medium optically coupled to the continuous optical spectrum medium; and a tunable element operably coupled to the discrete optical spectrum medium, wherein: the discrete optical spectrum medium has N optical modes (I:{i1 . . . iN}), said optical modes being ordered and equidistant in a frequency domain, wherein N is an integer equal to or greater than 3, each of the optical modes (in?I) having a coupling constant ?e,n with respect to the continuous optical spectrum medium, wherein at least one of the coupling constants ?e,n is different from the other coupling constants, the optical modes (I) having a coupling constant ? with respect to one another, wherein the tunable element is configured to control the coupling constant ?.