Abstract: Disclosed are an optical waveguide platform with integrated active transmission device and monitoring photodiode. The optical waveguide platform with hybrid integrated optical transmission device and optical active device includes an optical waveguide region formed by stacking a lower cladding layer, a core layer and an upper cladding layer on a substrate; a trench region formed by etching a portion of the optical waveguide region; and a spot expanding region formed on the core layer in the optical waveguide region, in which the optical transmission device is mounted in the trench region and the optical active device is flip-chip bonded to the spot expanding region. The monitoring photodiode is flip-chip bonded to the spot expanding region of the core layer of the optical waveguide, thereby monitoring output light including an optical coupling loss that occurs during flip-chip bonding.

Abstract: A fiber holder is provided which includes first and second holder plates having first and second main surfaces, respectively. The first holder plate includes a first channel insert including a first fiber channel configured to receive a fiber therein, and a first insert channel disposed on the first main surface such that the first insert channel extends through a length of the first main surface and is configured to receive the first channel insert. The second holder plate includes a second channel insert including a second fiber channel configured to receive the fiber therein, and a second insert channel disposed on the second main surface such that the second insert channel extends through a length of the second main surface and is configured to receive the second channel insert. The first and second channel inserts are disposed within the first and second insert channels, respectively.

Abstract: An optical module which includes a housing having a placing portion and an optical input-output portion facing an optical input-output surface of a ferrule; a first fixing portion for fixing the ferrule to the housing in the direction of the Z-axis perpendicular to the placing portion; and a second fixing portion for fixing the ferrule to the housing in the direction of the Y-axis perpendicular to the optical input-output surface, wherein the second fixing portion can change states from the first state to the second state; the first fixing portion fixes the ferrule in the direction of the Z-axis, and does not fix the ferrule in the Z-axis direction when the first fixing portion is at a second position; and the first fixing portion moves from the second position to the first position when the second fixing portion changes its state to a specific state.

Abstract: An adapter includes a housing with opposed openings for receiving a first connector that is mechanically and optically mateable with a second connector to form one or more optical signal communication links. The housing is arranged with a slot for receiving a flexible material having an index of refraction that approximates the index of refraction of aligned pairs of optical fibers. The flexible material is appropriately sized to cover the fibers from each of the connectors. The optical fiber ends of a respective connector can be cleaned by inserting the connector in the adapter and advancing the flexible material. Once the optical fiber ends of both connectors have been cleaned and the flexible material further advanced, the connectors can be reinserted in the adapter to establish an optical signal link between the optical fibers.

Abstract: An optical module has a circuit board, a photoelectric conversion element mounted on a mount surface of the circuit board, an optical coupling member for holding an optical fiber and optically coupling the optical fiber and the photoelectric conversion element, a semiconductor circuit element mounted on the mount surface of the circuit board and electrically connected to the photoelectric conversion element, and a plate-shaped supporting substrate arranged to sandwich the optical coupling member between the supporting substrate and the circuit board. An electrically conductive metal foil which extends in a thickness direction of the supporting substrate is provided integrally with a side surface of the supporting substrate, and the metal foil is connected at one end thereof to an electrode provided on a non-mount surface of the circuit board.

Abstract: In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.

Abstract: A conductor packaging assembly for packaging a plurality of conductors is provided. The assembly includes a housing and a plurality of connectors organized in the housing. The housing includes a first half and a second half hingedly attached with each other at one ends thereof and configured to removably attach with each other at their other ends to allow an open and closed position of the housing. Further, an inner strip is attached to the first half and/or the second half, a connector organizer is removably attached to the inner strip, and the connector organizer includes a plurality of connector mounting portions for removably attaching the plurality of connectors to the plurality of connector mounting portions.

Abstract: Waveguide apparatuses and methods are provided. A waveguide method (700) can include stacking (710) a plurality of layers (110) to form a plurality of waveguides (120). Each of the plurality of layers can include at least one waveguide surface (140). The method can further include aligning (720) the plurality of layers using at least one alignment device (160). The method can also include trapping (730) the aligned, stacked plurality of layers between a first member (170) and second member (180).

Abstract: An electro-optic modulator includes a substrate, a waveguide lens, a Y-shaped waveguide, and electrodes. The waveguide lens and the Y-shaped waveguide are formed in the substrate. The Y-shaped waveguide connects the waveguide lens and includes a first section dedicated for transmitting TE mode and a second section dedicated for transmitting TM mode. The electrodes are configured to modulate outputs of the waveguide lens, the first section, and the second section.

Abstract: A method and structure for reinforcing a fusion splice part where optical fiber cores extending from sheaths of a pair of optical cables are spliced to each other, wherein a reinforcing member is provided along the fusion splice part so that both ends of the reinforcing member overlap with each of the sheaths of the optical cables; an adhesive tube covers the periphery of the fusion splice part provided with the reinforcing member so that both ends of the adhesive tube overlap with each of the sheaths of the optical cables, and is contracted; and a protective tube covers the periphery of the adhesive tube so that both ends of the protective tube overlap with each of the sheaths of the optical cables, the adhesive tube is outwardly projected in the length direction, and is contracted.

Abstract: In aligning ends of optical fibers, e.g. for performing a prealignment of ends of large mode area double-clad fibers (LMA-DCFs) in order to thereafter perform a core alignment process, in a fiber optic fusion splicer a best, optimum or near optimum position or setting of the optical system for observing the self-focusing effect is first determined and then the very alignment operation may be performed using the determined setting. The very alignment process may then be performed by adjusting stepwise the offset distance between the observed fiber ends by e.g. using a cascade technique.

Abstract: A fiber optic assembly includes a connector and a cover bonded to an end face of the connector. The connector includes a ferrule, where an optical fiber extends through the ferrule and to the end face of the connector. An end of the optical fiber is polished proximate to the end face. The cover is bonded directly to the end face of the connector, and overlays the polished end of the optical fiber such that the cover protects the optical fiber, limits access of dust to the end face of the connector, and draws loose particulates from the end face upon removal of the cover.

Abstract: A fiber optic sensing method and apparatus for determining location and direction information of disturbances occurring in the environment of a sensor optical fiber are provided. The method comprises launching optical pulses into at least one polarisation eigenmode of a polarisation maintaining fiber as the sensor optical fiber, detecting temporal speckle patterns of light backscattered from the at least one polarisation eigenmode of the fiber, comparing the temporal speckle patterns to determine the location and direction information of a disturbance in the environment of the sensor optical fiber. The location information may be a distance along the fiber, and the direction information may be a direction radially from the axis of the fiber. The apparatus or instrument may be used to detect disturbance over long distances such as pipes, pipelines, or wells. Other applications include detecting intruders entering a controlled area.

Abstract: An optical switch (10) includes a light input (12a), a plurality of light outputs (12b) and at least one light pathway movable from a first position where a light communication path is formed between a light input (14a) and a first light output (14b) and a second position where a light communication path is formed between the light input and a plurality of light outputs. Multiple light pathways are configured within the switch and selectable by rotation of a switch housing part enabling sequential selection of light communication paths. The switch can be used on a surgical device to control illumination of the surgical field during a procedure.

Abstract: An optical fiber link suitable for use in a mode division multiplexing (MDM) optical transmission system is disclosed. The link has a first optical fiber having a core which supports the propagation and transmission of an optical signal with X LP modes at a wavelength of 1550 nm, wherein X is an integer greater than 1 and less than or equal to 20, the first fiber having a positive differential mode group delay between the LP01 and LP11 modes at a wavelength between 1530-1570. The link also has a second optical fiber having a core which supports the propagation and transmission of an optical signal with Y LP modes at a wavelength of 1550 nm, wherein Y is an integer greater than 1 and less than or equal to 20, said optical fiber having a negative differential mode group delay between the LP01 and LP11 modes at a wavelength between 1530-1570.

Abstract: There is provided an integrated wide viewing film including: a first film having an optical axis located in-plan; and a second film having an optical axis located in a thickness direction thereof, and inclined at a predetermined angle in an in-plane direction. The IPS-LCD employing the integrated wide viewing film can be significantly improved in a contrast ratio in a diagonal direction.

Abstract: A liquid crystal display device includes a pair of substrates of which one substrate is provided with a plurality of scanning lines and a plurality of common wirings, a first insulation film covering the scanning lines, the common wirings, and the one substrate, a plurality of signal lines provided on the first insulation film, a thin film transistor provided near an intersection part of the scanning lines and the signal lines, a lower electrode formed below the first insulation film and connected to the common wirings, a second insulation film formed on surfaces of the thin film transistor, the signal lines, and the first insulation film, and an upper electrode formed on the second insulation film and having a slit, a display region in which the liquid crystal layer is driven by an electric field, and a non-display region that is formed outside the display region.

Abstract: An optical grating comprising a grating layer and two surface layers, the layers being arranged with the grating layer between the surface layers. The grating layer comprises a set of multiple, discrete, elongated first grating regions that comprise a first dielectric material and are arranged with intervening elongated second grating regions. The bulk refractive index of the dielectric material of the first grating regions is larger than the bulk refractive index of the second grating regions. The first surface layer comprises a first impedance matching layer, and the second surface layer comprises either (i) a second impedance matching layer or (ii) a reflective layer. Each said impedance matching layer is arranged to reduce reflection of an optical signal transmitted through the corresponding surface of the grating layer, relative to reflection of the optical signal in the absence of said impedance matching layer.

Abstract: A photoelectric converter for optical signals includes a laser diode for emitting the optical signals, an optical transmission module for transmitting the optical signals, and a photo diode for converting the optical signals to electrical signals. The optical transmission module includes lenses oriented at ninety degrees from each other, with total internal reflection between the lenses, and optical fibers coupled with the lenses. The photoelectric converter has a high coupling precision between the lenses and the optical fibers, and the loss of optical signals is minimized.

Abstract: A computing system includes an optical transmission media to propagate a single-mode signal and a multimode signal, and support mode matching with the single-mode signal and multimode signal. A lowest-order mode of the optical transmission media is to couple the single-mode signal, and at least one higher-order mode of the optical transmission media is to couple the multimode signal. The optical transmission media is to enable extraction of the single-mode signal from the optical transmission media independently of the multimode signal.