Abstract: An MPO connector includes a pin configuration with an elongated shaft extending along an axis A. A first portion proximate a first end of the shaft includes a tool surface feature for engagement by a tool to impart a rotation to the shaft. A second portion proximate a second end of the shaft is cylindrical and centered on an axis B, offset relative to the axis A. A method of minimizing insertion loss between mating channels of mated MPO connectors includes inserting light into a channel of a first MPO connector, then measuring an intensity of light output from a channel of a second MPO, mated to the first MPO connector. A pin associated with one of the mated MPO connectors is rotated to a point where the measured light output from the channel of the second MPO connector is approximately maximized.

Abstract: A device may include a first substrate. The device may include an optical source. The optical source may generate light when a voltage or current is applied to the optical source. The optical source may be being provided on a first region of the first substrate. The device may include a second substrate. A second region of the second substrate may form a cavity with the first region of the first substrate. The optical source may extend into the cavity. The device may include an optical interconnect. The optical interconnect may be provided on or in the second substrate and outside the cavity. The optical interconnect may be configured to receive the light from the optical source.

Abstract: A fiber optic cable comprises a core subassembly comprising at least one optical fiber and a tube surrounding the optical fiber. A multi-layered jacket surrounds the core subassembly, wherein the jacket comprises an inner layer comprising a flame retardant (FR) material and an outer layer comprising a non flame retardant material having a lower coefficient of friction than the flame retardant material. A method of manufacturing an optical fiber cable includes providing a core subassembly and co-extruding a multi-layered jacket around the core subassembly, wherein the multi-layered jacket includes an inner layer comprising a flame retardant (FR) material and an outer layer comprising a non flame retardant material having a lower coefficient of friction than the flame retardant.

Abstract: Tubing encapsulated cable consists of one or more electrical conductors and possibly one or more fiber optic cables sheathed in a corrosion resistant metallic alloy. However, pumping during the installation of tubing encapsulated cable is required to overcome the capstan effect of the tubing encapsulate cable inside the coil tubing as the tubing encapsulated cable travels through the coiled up wraps of coil tubing. In an embodiment of the invention the tubing encapsulated cable consists of one or more electrical conductors and possibly one or more fiber optic cables sheathed in a fiber reinforced composite sheath. Because there is little drag between the fiber encapsulated cable and the coil tubing, conventional pumping operations used to install braided wireline into coil tubing may not be required when installing fiber encapsulated cable into coil tubing.

Abstract: The present invention is directed to a device for receiving an object in a reproducible manner, comprising: —a substantially rigid housing comprising an opening configured to receive therein the object to be reproducibly received; —first elastic engaging means comprising a first set of elastic flexure elements which are configured, when the object to be reproducibly received is situated in an engaging state received in the opening, to engage on the circumferential form of the object to be reproducibly received present at that position; —second engaging means which are configured, when the object to be reproducibly received is situated in an engaging state received in the opening, to engage on the circumferential form of the object to be reproducibly received present at that position; and —wherein the first elastic engaging means and the second engaging means are arranged some distance from each other in the opening. Furthermore, the invention is related to a method for manufacturing such a receiving device.

Abstract: There is provided an optical module, which includes a substrate; one or more optical devices disposed on the substrate; an integrated circuit (IC) device disposed on the substrate for driving the one or more optical devices; one or more optical fibers in optical communications with the one or more optical devices, respectively; an optical bench that attaches to the substrate and concentrates a direction of the light transmitted between the one or more optical devices and the one or more optical fibers; and a cover that attaches to the optical bench with the one or more optical fibers fixed therebetween. The optical bench changes a direction of the concentrated light.

Abstract: A method for compensating for a wavelength shift in a wavelength selective switch (WSS), and a device therefor. The device comprises a fixed seat (301) as well as a rotation beam (304) and a compensation block (302) that have different thermal expansion amounts, the rotation beam (304) and the compensation block (302) being fixedly adhered to the fixed seat (301). In the method, a combined structure of the rotation beam (304) and the compensation block (302) with different thermal expansion amounts is adopted; the combined structure rotates by means of different expansion amounts generated by the rotation beam (304) and the compensation block (302) at the same external temperature, and further drives an optical element of the WSS to rotate, hence compensating for a wavelength shift of the WSS. The method is safe and reliable; the device has a simple structure, and is convenient to encapsulate, is applicable to various WSS optical paths, and does not affect advantages of the optical path structure of the WSS.

Abstract: A 2-dimensional grating generates multi-mode light from two or more single-mode inputs. One or more waveguides couple the light from the single-mode inputs to the 2-dimensional grating. The 2-dimensional grating couples and transmits the generated multi-mode light to an optical fiber configured to support multiple modes.

Abstract: A liquid crystal includes first and second substrates, the first substrate including intersecting data lines and scan lines. A liquid crystal layer is sandwiched therebetween. Also, a plurality of sub-pixels districted by data lines and gate lines, and arranged along the long-axis and the short-axis directions in a matrix. A pixel electrode in the sub-pixels includes a central portion. A common electrode including linear electrodes arranged along the data lines and disposed with gaps therebetween. Sub-pixels are bent at the center portion, such that the linear electrodes or the gaps in both sides of the sub-pixels are inclined in opposite directions with respect to the long-axis direction. At least one of the linear electrodes or at least one of the gaps has a bent portion at the central portion of the respective pixel electrode. The common electrode is provided on liquid crystal layer side over the pixel electrode.

Abstract: A Mach-Zehnder modulator comprises first to third semiconductor structures provided on first to third areas of a primary surface of a conductive semiconductor region, respectively. The second semiconductor structure includes a semiconductor laminate and a first contact portion thereon. The third semiconductor structure includes the semiconductor laminate and a second contact portion thereon. The first and second contact portions constitute a contact layer. The second semiconductor structure has first and second waveguide sides. The first contact portion has an edge which terminates the contact layer and extends in a direction of a first reference plane on the top of the semiconductor laminate to reach the first waveguide side. The first reference plane and a top of the second semiconductor structure intersect with each other to define a line of intersection obliquely-crossed with an upper edge of the first waveguide side at a first angle different from a right angle.

Abstract: A scanning endoscope includes: an optical fiber that guides light emitted from a light source section, and emits the light from a distal end; an actuator that expands and contracts to scan with the light emitted from the distal end of the optical fiber; a ferrule that transmits, to the optical fiber, force corresponding to the expansion and contraction of the actuator; a ferrule holding part that holds the ferrule; a lens holding part that is formed of a cylindrical member provided outside the optical fiber along the optical fiber, and holds a lens, the lens receiving the light emitted from the distal end of the optical fiber; and an absorption part that absorbs vibration, in a longitudinal direction of the cylindrical member, of at least one of the ferrule holding part and the lens holding part.

Abstract: This invention concerns an ergonomic optical see-through head mounted display device with an eyeglass appearance. The see-through head-mounted display device consists of a transparent, freeform waveguide prism for viewing a displayed virtual image, a see-through compensation lens for enabling proper viewing of a real-world scene when combined together with the prism, and a miniature image display unit for supplying display content. The freeform waveguide prism, containing multiple freeform refractive, and reflective surfaces, guides light originated from the miniature display unit toward a user's pupil and enables a user to view a magnified image of the displayed content. A see-through compensation lens, containing multiple freeform refractive surfaces, enables proper viewing of the surrounding environment, through the combined waveguide and lens.

Abstract: An optical transceiver including an optical transmitter and an optical receiver for performing a bi-directional communication over a single optical transmission fiber is provided. The optical transmitter includes a laser diode, a main body in which a receptacle part corresponding to an optical connector is formed, the optical connector to which a first optical fiber is coupled using a first supporting member, a second supporting member for supporting a portion coupled between the receptacle part and the optical connector, a plane-spring part provided in at least one of the main body and the optical connector. The optical connector has been coupled to the receptacle part. The plane-spring part is configured to provide an elasticity in a first direction to prevent an additional coupling toward the main body, the first direction is opposite toward the main body. The first optical fiber is connected to the optical receiver.

Abstract: In an L-angle type optical connector for bending an optical fiber in a right angle direction in wiring, an L-angle member which accommodates a bent portion, which is bent in a right angle direction, of the optical fiber has a cut-out spanning the entire length of the L-angle member along the inside of the bent portion, and a protrusion is formed on inner side surfaces, which sandwich the cut-out, of the L-angle member in a protruded manner. The member which accommodates the bent portion, which is bent in a right angle direction, of the optical fiber is constituted of one component.

Abstract: An optical modulator module includes: a substrate in which a plurality of optical modulators are formed; a connector configured to include a plurality of terminals to which a plurality of signals for driving the plurality of optical modulators are input; and a relay board provided between the substrate and the connector. Each of the optical modulators includes an optical waveguide, a modulation electrode formed near the optical waveguide, and a feeder electrode electrically connected to one end of the modulation electrode. The terminals are arranged in parallel to a longitudinal direction of the substrate. Positions of respective ends of the modulation electrodes at which the respective feeder electrodes are electrically connected are the same as positions at which the respective terminals are provided in the longitudinal direction. Wiring patterns are formed on the relay board so as to electrically connect the terminals to the respective feeder electrodes.

Abstract: The present invention concerns a method for constructing a light coupling system wherein a grating is manufactured on the surface of a multimode waveguide and defines the entrance of the waveguide for an incident light beam, said grating comprising a repetition of patterns. The grating is defined by a set of parameters comprising: •grating period (P), separating two adjacent patterns, •grating depth (d) between the highest and the lowest point of the pattern, •incident angle mean value (?) of the incident light with respect to the waveguide. The method comprises a step of optimization of the set of parameters to obtain an optimized second set of parameters, in order to obtain a transmission efficiency (Ce) of the incident light into said waveguide for the first or the second diffractive order exceeding 35% for unpolarized light, or exceeding 50% for polarized light, at a given wavelength of the incident light.

Abstract: Three-dimensional flexible photonic integrated circuits on silicon are fabricated in semiconductor wafer form and then transferred to Silicon-on-Polymer (SOP) substrates. SOP provides flexibility for conformal mounting with devices capable of maintaining performance when dynamically deformed to allow routing of light in x, y and z directions. Bonding a wafer or individual die of III-V semiconductor, such as Gallium Arsenide or similar photonic material, to the flexible silicon creates an active region for lasers, amplifiers, modulators, and other photonic devices using standard processing. Mounting additional photonic devices to the opposite side of a flexible photonic waveguide produces a stack for three-dimensional devices. Multiple flexible photonic waveguides may be stacked to increase functionality by transferring light between stacked waveguides.

Abstract: Flame retardant communications cables may include at least one transmission media and at least one other component, such as a separator, buffer tube, jacket, shield layer, or wrap. The at least one other component may include a body portion, and at least one cavity formed in the body portion in which an extinguishant is positioned. Additionally, the at least one transmission media is not positioned within the at least one cavity.

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 tunable optical filter utilizes a pair of diffraction gratings and a rotating mirror to achieve a broad filter passband or wavelength bandwidth. By adjusting a small angle between the two diffraction gratings, such as less than approximately 15 degrees, the wavelength bandwidth of the tunable optical filter's passband may be arbitrarily adjusted or set. The two-grating system results in a narrower angular dispersion coefficient than could be achieved through the use of a single grating with similar properties. The narrower angular dispersion in turn results in a broader filter passband or wavelength bandwidth.