Abstract: Provided is a laser device comprising a substrate, an active layer, and a current confinement layer. The current confinement layer includes an oxide layer that is formed extending from a edge of the current confinement layer in a parallel plane parallel to a surface of the substrate, toward a center of the current confinement layer along the parallel plane, and that does not have an inflection point between the edge and a tip portion formed closer to the center or has a plurality of inflection points formed between the edge and the tip portion.

Abstract: An optical module includes a first ferrule, a second ferrule that is aligned with the first ferrule via a positioning pin, a housing including a support part that supports the second ferrule, and a ferrule clip that is fastened to the housing and presses the first ferrule toward the second ferrule.

Abstract: The present invention provides a multi-channel transceiver module comprising a unitary housing having a first channel body and a second channel body. Each channel body includes a male plug end and a receptacle plug end. A bridge member is provided for joining the first and second bodies. The bridge members disposed at the receptacle end. A gap is provided between the plug ends of each channel body. The gap extends from each plug end to the bridge member to partially divide each channel so that each plug end is insertable within a separate receptacle cage.

Abstract: The disclosure is directed at a waveguide sandwich which comprises a pair of host materials, each of the host materials housing a component waveguide. The component waveguides are then placed in physical contact with each other to form a composite waveguide thereby producing a waveguide sandwich.

Abstract: A system for mounting a plurality of fiber optic cassettes includes an enclosure and angle-iron-shaped elongated members that are affixed within the enclosure and vertically spaced apart. The elongated members include shelf fastener perforations disposed at regular intervals along a mounting surface and arranged to horizontally and vertically align with fastener perforations of one of the fiber optic cassettes. The system further includes a plurality of adapter brackets. Each of the adapter brackets include first and second generally planar sections spaced apart from one another and a third section joining the first and second sections. The third section includes a bracket fastener perforation. First, second and third stabilization features protrude from the first and second planar sections and are collectively arranged to secure the adapter bracket to one of the elongated members and to simultaneously allow the adapter bracket to move in a horizontal direction without substantial resistance.

Abstract: An optical communication device includes a substrate, a first optical-electric element, a second optical-electric element, a planar optical waveguide and a fixing device. Both the first and the second optical-electric elements are positioned on the substrate. The first optical-electric element includes a light emitting surface. The second optical-electric element includes a light receiving surface. The planar optical waveguide includes a first reflecting surface and a second reflecting surface. The fixing device includes a fixing pole and a fixing ring. The fixing pole defines a through hole. The planar optical waveguide runs through the through hole and is coiled by the fixing ring. The fixing ring is fixed on the fixing pole. The planar optical waveguide is positioned above the first and the second optical-electric elements, with the first reflecting surface aligning with the light emitting surface, and the second reflecting surface aligning with the light receiving surface.

Abstract: The modulator includes a ring resonator having a phase modulator that tunes blocked wavelengths within phase modulator bandwidths. The blocked bands include blocked wavelengths at which the intensity of an output light signal is minimized. Each of the blocked bands is associated with the phase modulator bandwidth within which the blocked wavelength is tuned. A bandwidth shifting device is configured to shift a selection of wavelengths that falls within each of the phase modulator bandwidths. Electronics are configured to operate the bandwidth shifting device so as to shift the phase modulator bandwidths from a location where a first target wavelength falls within a first one of the phase modulator bandwidths to a location where a second target wavelength falls within a second one of the phase modulator bandwidths.

Abstract: A line switching device includes multiple input ports to which signals are input and that include first input ports and second input ports different from the first input ports; multiple output ports that include given output ports; a branch unit that branches first signals input from the first input ports; and a switch that selectively outputs, among second signals input from the second input ports and branched signals branched from the first signals by the branch unit, signals that are to be switched to an output port among the given ports.

Abstract: A pre-terminated optical fiber assembly with a ferrule having front and rear opposed faces and at least one fiber bore defined longitudinally therethrough includes a glass optical fiber is disposed within the at least one fiber bore with the fiber fused to the ferrule at a location at least 1 mm deep inside the bore. A method for fusing is also disclosed. The ferrule 14 is desirably composed of an inorganic composite material, the composite comprising a material gradient from at least 75% by volume of a first inorganic material to at least 75% by volume of second inorganic material in the radially inward direction, where the first inorganic material has a fracture toughness of at least 1 MPa·m1/2, and the second inorganic material has a softening point of no greater than 1000° C., desirably no greater than 900° C.

Abstract: A connector having a ferrule, and a translucent or transparent covering membrane sealingly bonded with the ferrule by a paste zone and blanking the opening of the connector. The covering membrane being detachable from the ferrule by peeling and having a strip for gripping the membrane during peeling. The covering membrane having a line defining an easy cutting path to prevent its re-installment on the ferrule after its peel off.

Abstract: An optical fiber cable comprises a plurality of optical fibers, tensile strength fibers that accommodate the plurality of optical fibers, and a sheath formed with a thermoplastic resin and covering the tensile strength resin. In this optical fiber cable, when a Young's modulus of the sheath at 0° C. is E [MPa], a cross-sectional area of the optical fiber cable is S [mm2] and an inner diameter of the sheath of the optical fiber cable is Di [mm], ES (0° C.) [N] which is the product of the Young's modulus E at 0° C. and the cross-sectional area S, and the inner diameter Di [mm] satisfy: ES ? ( 0 ? ° ? ? C .

Abstract: An optical fiber cable assembly includes an optical fiber cable, an optical fiber connector and a strain relief member. The optical fiber connector has a housing supporting a plurality of optical fibers of the cable. The strain relief member has a flexible conduit, a first section and a second section spaced from the first section. The first section is connected to a rear end of the optical fiber connector and the second section is connected to a portion of the optical fiber cable.

Abstract: A closed loop, optical feedback synchronization system provides real time feedback and control of a light emitting fiber when scanning or displaying an image. The light emitting fiber is driven by an actuator in an angular pattern to scan the image. Light reflected from a lens assembly is received by an optical synchronizer integrated circuit that includes a slot located between walls of the circuit. The reflected light is directed toward a multi-mode fiber in optical communication with the circuit. A radial position of the reflected light as it passes the slot may be used to compensate for a drift in angular velocity of the light emitting fiber.

Abstract: According to the invention, the intermediate sheath (13) is formed by assembling longitudinal elements (13A) and includes: a first optical material, the refractive index of which differs from the refractive index of the monomode core by at most 10?3; and a second optical material, the refractive index of which is lower than the refractive index of said monomode core and differs therefrom by at least 10?3.

Abstract: An optical connector comprising a connector body, an enclosure that is a slit-shaped hole formed from one surface of the connector body into the connector body and accommodates a sheet-like optical waveguide with a tip of the optical waveguide abutting against a bottom of the hole, and a pressing section that is provided on a first surface of the enclosure facing a sheet surface of the enclosed optical waveguide and presses the enclosed optical waveguide toward a second surface of the enclosure facing the first surface so as to bring the enclosed optical waveguide into contact with the second surface.

Abstract: A cable that includes a first optical fiber in a center, a first layer with a plurality of metal wires and a stainless steel tube surrounding the first optical fiber, a second optical fiber inside the stainless steel tube, and a second layer with a plurality of metal wires surrounding the first layer, wherein the first optical fiber is directly exposed to the outside environment.

Abstract: Methods for the fabrication of orientation-patterned semiconductor structures are provided. The structures are light-waveguiding structures for nonlinear frequency conversion. The structures are periodically poled semiconductor heterostructures comprising a series of material domains disposed in a periodically alternating arrangement along the optical propagation axis of the waveguide. The methods of fabricating the orientation-patterned structures utilize a series of surface planarization steps at intermediate stages of the heterostucture growth process to provide interlayer interfaces having extremely low roughnesses.

Abstract: Disclosed herein is an optical module including: an optical element mounted on a substrate; and an optical connector mounted corresponding to the optical element so as to change a path of an optical signal of the optical element and transfer the optical signal having the changed path. The optical module may provide various communication performances using an optical connector in which first and second connector parts are optically coupled stably to each other. Particularly, the optical module does not have a silicon optical bench (SiOB) as a medium, thereby making it possible to reduce a thickness of a product.

Abstract: A heat dissipation system and method are embodied in an optical subassembly (OSA) that mechanically couples with an electrical subassembly (ESA) of an optical communications module. When the OSA is coupled with the ESA, a heat dissipation block that is embedded in the OSA is spaced apart from components of the ESA by a small air gap. At least a portion of the heat that is generated by one or more of these components passes into the heat dissipation block, which extends through top and bottom surfaces of the OSA. Because the heat dissipation block never makes physical contact with the ESA or with components of the ESA, there is no risk of the block damaging the ESA or detrimentally affecting the electrical performance of the module.

Abstract: A method and apparatus for controlled displacement, rotation and deformation of parts of a fiber optic collimator so as to provide multiple degrees of adjustment freedom that are decoupled one from another, for adjusting the path of a light beam, comprising: an output elongate hollow node for passing a light beam therethrough and towards a lens, and an elongate hollow base node having separate top and bottom parts connected to each other by opposed ends of a plurality of flexible rods that restrict the relative movement between the top and bottom parts of the base node to substantially only translational parallel movement. Opposed portions of the top and bottom parts of the base node each include a respective screw and an opposed slanted surface, which upon interaction, develop a shearing force which is applied to the top and bottom parts of the base node and cause a translational parallel relative movement therebetween.