Abstract: An object of the present invention is to provide an optical device, in which a stress applying on ridge sections caused by the difference of thermal expansion between a metal film of which a ground electrode is formed and a substrate is reduced. In order to achieve this, in the optical device of the present invention, the ratio of the volume of a ground electrode portion formed at the position of other groove to the area of opening part of the other groove is smaller than the ratio of the volume to the area of a ground electrode portion formed at the position except the other groove.

Abstract: A cable system and method including a cable or a microduct provided within the groove extending vertically into, but not through, a pavement. The cable has a central strength member, at least one buffer tube stranded around the central strength member, an outer jacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. Provided within the microduct is a microduct cable including at least one transmission element. A cable including a central strength member, at least one buffer tube stranded around the central strength member, an outer jacket surrounding the buffer tube and central strength member, and at least one transmission element provided within said at least one buffer tube. The cable has a longitudinal thermal expansion force due to a change in temperature from 20° C. to 70° C. of less than 305 lbs when constrained.

Abstract: An optical receptacle with low transmission loss, which is connectable with an optical plug, is provided. The optical receptacle includes a photoelectric conversion module having the capability of making photoelectric conversion between light signals and electrical signals, and a module housing. The photoelectric conversion module is a molded interconnect device (MID), which is provided with a module body having a post, an optical device mounted on the post, and an electrical circuit mounted on the module body. The module housing has a tubular projection, into which an end of the optical fiber supported by the optical plug can be inserted. When the optical plug is connected with an optical receptacle, the end of the optical fiber is positioned in the tubular projection so as to be in a closely opposing relation to the optical device mounted on the post.

Abstract: Is provided a method of forming a polymer waveguide for passive alignment to an optical fiber in an optical module. A groove mounting an optical fiber thereon is formed on a substrate, and a shielding layer pattern is formed to selectively shield the groove. Polymer layers for an optical waveguide, which extend to the shielding layer pattern, are formed on the substrate, and the layers are patterned, thereby forming a polymer waveguide. The shielding layer is removed, and the groove is exposed. An optical fiber aligned to the optical waveguide is mounted on the exposed groove.

Abstract: A self-contained fiber optic cartridge (300) includes a body (310) with a bore (342) that receives a fiber optic cable (30) and which is then bonded by epoxy (340) to the cable, with the body then installed in a passage (343) of a frame (304). The body has a rear part that forms fingers (314) with flanges (324) that are inwardly compressed during rearward (R) insertion and then spring out to abut a rearwardly-facing shoulder (326) of the frame, to prevent the body from falling forwardly (F) out of the frame.

Abstract: An object of the invention is to provide a Mach-Zehnder type optical modulator that can reduce wavelength chirp occurring in a modulated light, and also can reduce an optical loss with a small sized configuration. To this end, according to the present Mach-Zehnder type optical modulator, in a configuration where optical waveguides and a coplanar electrode are formed on a substrate having an electro-optical effect, a polarization inversed region is formed in a part of an interaction portion of the substrate, and a signal electrode is arranged above one of parallel waveguides in a polarization inversed region and is arranged above the other parallel waveguide in a non-inversed region. Furthermore, a surface area of the substrate positioned on both sides of each of the parallel waveguides is lowered to provide a ridge structure section, and a buffer layer is formed on a ridge side face thereof.

Abstract: An optical module that may be used in small-form factor pluggable applications includes a delatching/latching mechanism. The optical module may be an optical transceiver, for example, and the delatching/latching mechanism may allow for improved insertion and removal of the optical module from a cage in a computer board assembly. A latching assembly that assists in latching and delatching may include a latching member having a slotted mating element that is in contact with, and rotates relative to a substantially-fixed pivot element. Rotation may be achieved via a rotatable actuator having a cam engaging a cam follower. Numerous example biasing apparatuses are described to bias the latching assembly to its latched position and to promote contact between the mating element and the pivot element.

Abstract: A variable optical attenuator comprises a portion of a waveguide through which optical energy can propagate having a side surface through which optical energy can be extracted; a layer of thermo sensitive material having controllable optical properties, covering the side surface of the portion; a helicoidal heating element wrapped around the waveguide and covering at least the layer. The helicoidal heating element can be used to control the optical properties of the material by inducing a thermal transfer profile on the material using the heat dissipation of the heater through the material; wherein a wave propagation in the waveguide is influenced by the optical properties of the material controlled by the heating element.

Abstract: Embodiments of the invention generally provide an optical component configured to minimize reflectance. The component generally includes an optical housing having a device receiving end, a fiber receiving end, and an intermediate portion, wherein a bore connects the fiber receiving end to the device receiving end via the intermediate portion. The component further includes a split sleeve assembly press fitted into the intermediate portion, and a fiber stub press fitted into the split sleeve assembly, the fiber stub being positioned proximate a terminating end of the split sleeve.

Abstract: Provided are optical switches applicable to various safety apparatuses which can control an operation of a circuit by detecting a switching signal such as pathogens and toxic substances, and safety apparatuses using the optical switches. The optical switch comprises an optical irradiation unit to irradiate light; an optical interference unit which can interact with a switching signal, interferes with light irradiated from the optical irradiation unit and radiates it as interference light, and can vary the wavelength of the interference light after interaction with the switching signal; and a switching unit which is provided in the path of the interference light, detects a wavelength change of the interference light, and conducts one of activating and deactivating a circuit. The safety appatatus comprises the optical switch and a hazard evasive apparatus activating unit which activates a hazard evasive apparatus using the optical switch.

Abstract: An optical fiber having a length can include a core and at least one cladding disposed about the core, where the one cladding can comprise at least first volumetric regions having a first refractive index n1 and second volumetric regions having a second refractive index n2, different from n1, and the first and second volumetric regions in any cross-section taken through the fiber can be randomly intermingled with one another, where the random intermingling of the first and second volumetric regions changes with changes in the location of the cross-section along the length of the fiber.

Abstract: The optical control having an optical source that uses a transmission medium to deliver energy to an optical detector. Upon physical contact with the transmission medium changes in the internal reflection of the transmission medium occur and reduce the amount of energy being delivered to the detector. The change in internal reflection causes a change in the state of the optical control.

Abstract: In order to provide a metal fabric of a design which reduces or even completely compensates for the effect of darkening which is intrinsic to the metal fabric at a predetermined fabric density, a metal fabric having an optical waveguide element penetrating a core fabric area is suggested. In addition, a metal fabric having multiple optical waveguide elements and/or optical waveguide elements integrated structurally into the fabric is suggested. In addition, a method for manufacturing a metal fabric is presented.

Abstract: An optoelectronics packaging assembly is provided having a ceramic base on which is connected an optoelectronics device. The optoelectronic device is maintained in an enclosure formed by a housing, the base and/or other structures. The packaging assembly includes means for placing the base and the optoelectronics device in electrical communication with an external component, for example, a printed circuit board. The means include solder balls, J-shaped leads, bent leads, and electrical pads.

Abstract: The present invention relates to a light generating device comprising a slab light guide (1), at least one light input unit (2) arranged on at least one side (10) of said light guide (1) comprising at least one light source (20) and a light incoupling means (21) for coupling light into said light guide (1), and at least one light output unit (3) arranged on at least one side (11) of said light guide (1). In order to provide a device that provides polarized light of a high homogeneity the light output unit (3) according to the present invention comprises a polarized light emitting waveguide plate (31) for selectively coupling light of a first polarization state out of said light guide (1). The present invention further relates to a display device, in particular an LCD, comprising a light generating device according to the invention.

Abstract: Fiber Bragg gratings (FBGs) are particular suitable for measuring strain. However, a single parameter measurement is difficult to implement, since cross-sensitivity to temperature compels the use of an additional temperature reference, e.g. a strain-inactive FBG. The development of a passive athermal fiber Bragg grating strain gage is thus of particular interest since it renders optional the measurement of temperature, benefiting large scale system design and performance. In view of this need, a package for fiber Bragg gratings that enables strain measurements to be performed while canceling temperature sensitivity is disclosed. The proposed design is based on a structure composed of two parts, which can be made of the same material, having a defined length ratio that allows the adjustment of the temperature sensitivity to zero, providing athermal operation of the strain gage.

Abstract: An optical-electrical interface includes an alignment interface and an optoelectronic die. The alignment interface is mounted to a substrate and includes a waveguide port to receive an external waveguide from a first side. The alignment interface includes a conductor disposed on a second side of the alignment interface to couple to a conductor on the substrate. The optoelectronic die is mounted to the second side of the alignment interface. The optoelectronic die includes an electrical port coupled to the conductor disposed on the alignment interface, an optoelectronic device coupled to the electrical port and an optical port aligned to optically couple the optoelectronic device to the external waveguide through the alignment interface.

Abstract: An inner cladding exposure section 14 is formed by removing a part of an outer cladding 4 of an optical amplification medium fiber 10 which has a porous layer 3 between the inner cladding 2 and the outer cladding 4 in a longitudinal direction. An end surface 23 of an optical fiber 20 for the excited light incidence is cemented on an outer periphery of the exposed inner cladding 2. The excited light 24 is incident into the optical amplification medium fiber 10 from the optical fiber 20 for the excited light incidence. By doing this, it is possible to provide a method for exciting a light in an optical amplification medium fiber which can realize a superior amplitude while emitting the excited light so as to be incident into the optical amplification medium fiber highly efficiently.

Abstract: The invention relates to an indicator comprising a light-guiding layer, a cladding layer on one surface of said light-guiding layer, and a patterning layer on the other surface.

Abstract: A target illuminating system is provided for steering a scan optical beam and reducing the size of an optical output aperture. The system includes an array of scan beam outlets being selectively operative to receive and project a point source of scan beam radiation along an optical path. The system also includes a collimating element being disposed along the optical path. The collimating element is operative to receive the point source of scan beam radiation and to output the collimated scan optical beam in a desired coarse direction corresponding to a selected one of the scan beam outlets. The scan optical beam defines a scan exit pupil which is substantially coincident with the optical output aperture.