Abstract: In package intra-chip and/or inter-chip optical communications are provided using microLEDs and photodetectors mounted to integrated circuit (IC) chips and/or to transceiver dies associated with the IC chips. Light from the LEDs may pass through waveguides on or in a substrate to which the IC chips are mounted or which couple the IC chips.

Abstract: An optical component having an NA conversion function which enables arraying without lowering a product yield, with small size and a simple assembly process. There is provided an optical component using a capillary type lens array in which plural graded index lenses each of which is surrounded with glass capillary in all circumferential directions, in which a refractive index distribution constant of the plurality of graded index lenses at one end of the optical component in an optical axis direction of the graded index lens is smaller than a refractive index distribution constant of the plurality of graded index lenses at other end of the optical component in the optical axis direction of the graded index lens.

Abstract: A fiber management tray (10) is disclosed. The fiber management tray (10) can have a body (12) including a bottom wall (14) with side walls (16) extending outwardly from the bottom wall (14). The fiber management tray (10) can include a termination region (18) that has a first side (24) and a second side (26). The termination region (18) includes a termination panel (13) that holds connectors (20). The fiber management tray (10) can include a hinge area (56) for mounting said tray (10) to a tray tower (58) and a storage basket (32) located between the termination region (18) and the hinge area (56). The storage basket (32) can include a first pocket (44) that communicates with the second side (26) of the termination region (18) and an opposite second pocket (48) that communicates with the first side (24) of the termination region (18). The fiber management tray (10) can define at least one fiber routing path on each of the first and second pockets (44, 48) of the storage basket (32).

Abstract: An optical fiber system exploits a principle of topological confinement for guided higher-order modes, in contrast to more conventional total-internal-reflection (TIR) confinement. The optical fiber has a geometry and index profile defining a cutoff wavelength for a predetermined L-mode of optical signal propagation in the optical fiber, where L is azimuthal mode index. An optical source subsystem is coupled to the optical fiber to establish an optical signal propagating in the optical fiber, wherein the optical signal has the predetermined L-mode and a wavelength being either (1) at least 15% above the cutoff wavelength such that the optical beam propagates as a topologically confined mode, or (2) sufficiently above the cutoff wavelength that, based on the L-mode of the optical beam, the optical beam propagates as a topologically confined mode having propagation loss less than 3 dB/meter.

Abstract: A sliding tray is configured to support one or more optical communications modules and includes a body portion having one or more mounting locations for the one or more optical communications modules. A trough projects from the body portion and is configured to support optical fibers connected to the one or more optical communications modules. A cover is pivotably connected to the tray for selectively covering the trough. A front wall of the cover may include a labeling surface, with a removable lens covering the labeling surface. A stop to limit the sliding direction of said sliding tray in the rearward direction may also be provided.

Abstract: Protection elements are provided for protecting optical networking systems during shipment. In one implementation, a system includes a card having one or more sockets, each socket having a connector device. The system also includes a pluggable module having an interface configured to connect with the connector device of a respective socket when the pluggable module is fully seated in the socket. A first protection element is configured to be held in place near a front edge of the socket. The first protection element is configured to allow the pluggable module to be arranged in a partially inserted position within the socket. Also, the first protection element is further configured to block the pluggable module from being fully seated in the socket to thereby prevent the interface of the pluggable module from contacting the connector device of the socket.

Abstract: Cables having buffer elements formed with two-dimensional fillers are described. A cable may include at least one optical fiber, and a buffer element may be formed around the at least one optical fiber. The buffer element may be formed from a material that includes a polypropylene-containing polymeric resin, a filler added to the polymeric resin that includes a plurality of two-dimensional particles, and an amphiphilic compatabilizer. A jacket may be formed around the at least one optical fiber and the buffer element.

Abstract: A cap for an optical connector adaptor, including: a base portion including a first surface and a second surface provided on an opposite side of the first surface; a grip portion formed by protruding from the first surface of the base portion; a fitting portion configured to protrude from the second surface of the base portion and to be fitted to an optical connector adapter; and a cover portion that is formed over the whole outer periphery of the base portion, in which the second surface includes a contact surface where the optical connector adapter and the cap for an optical connector adaptor contact each other, and in which the cover portion is configured to surround the contact surface from the outer periphery of the base portion.

Abstract: An optical modulator has an optical modulation element including optical waveguides and a housing that accommodates the optical modulation element. The housing has a bottom surface wall having a quadrilateral shape in a plan view, first and second long side walls that are connected to two opposite edges of the bottom surface wall, and first and second short side walls, shorter than the long side walls, and connected to two other opposite edges of the bottom surface wall. The optical modulation element is accommodated in a space surrounded by the bottom surface wall and the side walls. The second long side wall has a wall thickness that is equal to or larger than that of the first long side wall, and at least one of the first and second short side walls has a wall thickness that is thinner than that of the first long side wall.

Abstract: An optical fiber adapter (10) comprises: a housing (1), a front portion of the housing (1) is provided with at least two accommodating cavities (19) which penetrate in a front-rear direction, are arranged sided by side, and are closed circumferentially, and a rear portion of the housing (1) is provided with a mounting base (14); at least two optical fiber plugs (2) provided on the mounting base (14), each optical fiber plug (2) comprises a positioning member (21), a ferrule (22) fixed to the positioning member (21) and extending forwardly, an optical fiber (23) exposed to a front end of the ferrule (22), a sleeve (24) fitted on an outer periphery of the ferrule (22) and a positioning cylinder (25) further sheathed on an outer periphery of the sleeve (24), a front end of the positioning cylinder (25) extends forwardly into the accommodating cavity (19), a rear end of the positioning cylinder (25) is fixed to the positioning member (21), an outer periphery of the positioning member (21) is provided with a first

Abstract: Aspects of the present disclosure are directed to monolithically integrating an optical gyroscope fabricated on a planar silicon platform as a photonic integrated circuit with a MEMS accelerometer on the same die. The accelerometer can be controlled by electronic circuitry that controls the optical gyroscope. The optical gyroscope may have a microresonator ring or a multi-turn waveguide coil. Gaps may be introduced between adjacent waveguide turns to reduce cross-talk and improve sensitivity and packing density of the optical gyroscope.

Abstract: A device providing efficient transformation between an initial optical mode and a second optical mode includes first, second and third elements fabricated on a common substrate. The first element includes first and second active sub-layers supporting initial and final optical modes with efficient mode transformation therebetween. The second element includes a passive waveguide structure supporting a second optical mode. The third element, at least partly butt-coupled to the first element, includes an intermediate waveguide structure supporting an intermediate optical mode. If the final optical mode differs from the second optical mode by more than a predetermined amount, a tapered waveguide structure in the second or third elements facilitates efficient transformation between the intermediate optical mode and the second optical mode. Precise alignment of sub-elements formed in one of the elements, relative to sub-elements formed in another one of the elements, is defined using lithographic alignment marks.

Abstract: This optical receptacle comprises: a first optical surface on which light emitted from a VCSEL is incident; a first reflection part which reflects, as monitor light traveling to a detection element; a light separation part which separates monitor light and signal light; a second optical surface which emits the signal light to the end surface of the optical transmission body; and a third optical surface which emits the monitor light reflected by the first reflection part and the monitor light separated by the light separation part to the detection element. Two second reflection parts of the light separation part are disposed so as to be located within a luminous flux of the light incident on the first optical surface such that a predetermined condition is satisfied.

Abstract: A fiber fanout assembly is provided with one or more endcaps, an epoxy fill hole, and air vent holes. A mold can be used with endcaps to create an epoxy body without an external housing structure. External housing structures can also be provided with one or more endcaps. Air vent holes can be provided in the endcaps. An epoxy fill hole can be provided in an endcap. An epoxy fill hole can also be provided adjacent to a fiber breakout end of the fiber fanout housing.

Abstract: Provided is a connector that includes an optical component and a movable member. The optical component emits light. Light from the optical component is incident upon the movable member and the movable member is movable between a first state taken during non-fitting to a counterpart connector and a second state taken during fitting to the counterpart connector. Incident light incident upon the movable member from the optical component is, in the first state, attenuated and emitted to an outside such that power of the light is lower than power of the light when the movable member is held in the second state.

Abstract: Methods and apparatuses for downconverting are provided. A dual-drive mach zehnder modulator (DDMZM) receives: a continuous wavelength optical signal, an input signal (microwave signal), and local oscillator tones. The DDMZM includes: first and second arms formed from optical waveguides which receive the optical signal, a first modulator that receives the input signal, and a second modulator that receives the oscillator tones. The input signal is modulated onto the optical signal propagating through the first arm to form a first modulated optical signal. The oscillator tones and third-order intermodulation products of those tones are modulated onto the optical signal propagating through the second arm to form a second modulated optical signal. The modulated optical signals are combined to form an output optical signal. The oscillator tones are spaced two folded bandwidths apart and centered within a spectrum of interest of the input signal.

Abstract: Structures for an optical power modulator and methods of fabricating a structure for an optical power modulator. A waveguide core includes a longitudinal axis, a first section, and a second section spaced from the first section along the longitudinal axis. An active layer includes a portion positioned along the longitudinal axis between the first section and the second section of the waveguide core. The active layer contains a material configured to have a first state with a first refractive index in response to an applied stimulus and a second state with a second refractive index different from the first refractive index.

Abstract: A laser beam phase-modulation device, a laser beam steering device, and a laser beam steering system including the same are provided. The laser beam phase-modulation device includes a refractive index conversion layer having a refractive index that is changed according to an electrical signal applied thereto, the refractive index conversion layer including an upper surface on which the laser beam is incident and a lower surface opposite the upper surface, at least one antenna pattern embedded in the upper surface of the refractive index conversion layer, and a metal mirror layer provided under the lower surface of the refractive index conversion layer and configured to reflect the laser beam.

Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.

Abstract: A receptacle for receiving and securing one or more fiber optical connectors and ferrule assembly opposing each other in a secured position deploying an interconnect assembly. A first side of the interconnect assembly has one or more sets of opposing hooks at a first end to accept and secure a connector or ferrule assembly. A second end of the interconnect assembly receives a ferrule assembly secured with a stopper.