Abstract: A multimode optical fiber transmission system that employs an optical fiber with at least one modal-conditioning fiber is disclosed. The system includes a single-mode transmitter that generates modulated light having a wavelength between 800 nm and 1600 nm; an optical receiver configured to receive and detect the modulated light; a multimode optical fiber that defines an optical path between the single-mode transmitter and the optical receiver, the multimode optical fiber having a core with a diameter D40 and a refractive index profile configured to optimally transmit light at a nominal wavelength of 850 nm; and at least one modal-conditioning fiber operably disposed in the optical path to perform at least one of modal filtering and modal converting of the optical modulated light.

Abstract: A system and method of implementing distributed metadata checkpointing in a storage device. A storage device is disclosed that includes storage device that employs distributed metadata checkpointing, including: flash memory; and a controller that collects metadata checkpoints and includes: a checkpoint partitioner that partitions a metadata checkpoint into a set of segments; and a segment loader that stores each segment of the set of segments into a spare region of a corresponding different flash memory pages during a write operation of data to flash memory.

Abstract: A real-time monitoring apparatus for seafloor deformation during hydrate exploitation, includes a main frame, a detecting device, and a sensing and wireless data transmitting device. The detecting device includes at least two detecting straight rods in different directions; the detecting straight rods are connected to the main frame through the movable sleeves; and at least two fixing supports are configured below each detecting straight rod, perpendicular to and uniformly distributed along the detecting straight rod. A movable lever is configured above each detecting straight rod, the movable lever is connected to the main frame through the lever-fixing rod, and a stretchable and compressible spring is configured at an upper end of the movable lever. The sensing and wireless data transmitting device includes at least two tension and compression force sensors in different directions, a gyroscope sensor, a wireless data transmitter, and a power source, all mounted in the main frame.

Abstract: A low-profile broadband circularly-polarized array antenna based on stacked traveling wave antenna elements, includes: a circularly-polarized antenna element composed of three segments connected in an end-to-end manner of metal layers printed on two sides of a dielectric slab and a metallized via connecting two layers; a 2×2 antenna sub-array composed of a metallized via cavity and four antenna elements; a 16-way full-parallel feeding network composed of the metallized vias; slots for coupled feeding between feeding layers and metal cavities and the antenna; and a switching structure for testing between a grounded coplanar waveguide (GCPW) and a substrate integrated waveguide (SIW). An antenna array designed can be manufactured by using a printed circuit board process. The antenna array can realize circularly polarized radiation in a very broad frequency band.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile set with a logical network entity. The entity configuration profile set is a group of at least two entity configuration profiles for different types of settings to apply to logical network entities with which the entity configuration profile set is associated. The method identifies a host machine at which the logical network entity is implemented. The method distributes the entity configuration profile set and each of the at least two entity configuration profiles to the identified host machine.

Abstract: Some embodiments provide a method for a network controller. The method receives network configuration data including an association of an entity configuration profile to a logical entity group that references at least two logical network entities. The entity configuration profile includes a set of configuration settings to apply to logical network entities with which the entity configuration profile is associated. The method associates the entity configuration profile with the logical network entities referenced by the logical entity group. Based on the associations of the entity configuration profile with the logical network entities, the method determines multiple host machines that require the configuration data for the entity configuration profile. The method distributes the entity configuration profile to the host machines.

Abstract: The present invention discloses a narrow band slot antenna with a coupling suppression. The slot antenna includes a medium plate (1), a copper-clad layer (2), an A-capacitor (3), and a B-capacitor (4). The copper-clad layer (2) has an A-slot (21) and a B-slot (22) thereon, the A-capacitor (3) and the B-capacitor (4) are respectively mounted inside and at two ends of the B-slot (22). The present invention loads the capacitors at a specific position on a finite medium plate to increase the isolation between the antennas, which is beneficial to rectify the slot antenna.

Abstract: Novel polyketanil-based compositions for use as a laser-releasable composition for temporary bonding and laser debonding processes are provided. The inventive compositions can be debonded using various UV lasers, at wavelengths from about 300 nm to about 360 nm, leaving behind little to no debris. The layers formed from these compositions possess good thermal stabilities and are resistant to common solvents used in semiconductor processing. The compositions can also be used as build-up layers for redistribution layer formation.

Abstract: Example methods and systems for a network management entity to perform topology-aware control information dissemination in a software-defined networking (SDN) environment. The method may comprise obtaining group topology information specifying a network group, and a network configuration object that references the network group. The method may also comprise: processing the group topology information to identify, from multiple members of the network group, a first member that is relevant to a first host; and processing the group topology information to identify, from the multiple members, a second member that is irrelevant to the first host. The method may further comprise: generating and sending, to the first host, control information associated with a subset of the network group. The subset may include the first member but exclude the second member.

Abstract: Example methods are provided for port mirroring based on remote direct memory access (RDMA) in a software-defined networking (SDN) environment. One example method may comprise obtaining configuration information associated with a port mirroring session between a source logical port supported by a source host and a destination logical port supported by a destination host, and establishing an RDMA-based connection between the source and destination hosts. The method may also comprise: in response to detecting a packet passing through the source logical port, generating a mirrored packet based on the detected packet, and storing, in source memory associated with the source host, the mirrored packet in association with destination information identifying the destination logical port or destination host. The method may further comprise transferring the mirrored packet from the source memory to destination memory associated with the destination host via the RDMA-based connection.

Abstract: A fiber ribbon interconnect may include a fiber ribbon, a first optical connector at a first end of the fiber ribbon, and a second optical connector at a second end of the fiber ribbon. The fiber ribbon includes two or more cladding-strengthened glass optical fibers each having an outer surface. The fiber ribbon also includes a common protective coating that surrounds the outer surfaces of the two or more cladding-strengthened glass optical fibers.

Abstract: A high-density optical fiber ribbon is formed by two or more cladding-strengthened glass optical fibers each having an outer surface and that do not individually include a protective polymer coating. A common protective coating substantially surrounds the outer surfaces of the two or more cladding-strengthened glass optical fibers so that the common protective coating is common to the two or more cladding-strengthened glass optical fibers. A fiber ribbon cable is formed by adding a cover assembly to the fiber ribbon. A fiber ribbon interconnect is formed adding one or more optical connectors to the fiber ribbon or fiber ribbon cable. Optical data transmission systems that employ the fiber ribbon to optically connect to a photonic device are also disclosed. Methods of forming the cladding-strengthened glass optical fibers and the high-density optical fiber ribbons are also disclosed.

Abstract: A fiber optic cable assembly suitable for providing mesh connectivity includes a fiber shuffle region arranged between first and second cable assembly sections that each include multiple tubes each containing a group of optical fibers, with a jacket provided over one or both cable assembly sections. The fiber shuffle region may be compact in width and length, and integrated into a trunk cable. Optical fibers remain in sequential order in groups at ends of the cable assembly sections, where the fibers may be ribbonized and/or connectorized. A fabrication method for such a fiber optic cable assembly is also disclosed.

Abstract: An integrated fiber-ferrule useable as an optical coupling element includes a core directly contacting a cladding layer that has a lower index of refraction than that of the core, without an intervening adhesive. The cladding layer outer diameter is at least 100 times greater than that of the core, and matches an outer diameter of a standard ferrule. The integrated fiber-ferrule may be produced by drawing a glass preform into a cane, cutting the cane into sections, and shaping end faces of the cut sections (e.g., using a laser). To form a fiber optic assembly, a front end of an optical fiber core may be fusion spliced to a rear end of the core of the integrated fiber-ferrule. Use of an integrated fiber-ferrule permits reduction of core to fiber eccentricity, and reduction of connector insertion losses.

Abstract: An out-of-band coupled antenna combined by fine-and-straight antenna and bow-tie antenna is provided, including: a dielectric slab (1), an AA radiation element (2) provided on an upper plate (1A) of the dielectric slab (1) by a, a cooper pouring process, a BA radiation element (3), an A feeder line (4) and a B feeder line (5); an AB radiation element (8) provided on a lower plate (1B) of the dielectric slab (1), a BB radiation element (9), a C feeder line feeder (6) and a D feeder line (7); a first sensor (10A) and a second sensor (10B) which are connected on the AA radiation element (2); a third sensor (10C) and a fourth sensor (10D) which are connected on the AB radiation element (8). The antenna is capable of suppressing out-of-band coupling between indication elements to improve the separation degree.

Abstract: A storage infrastructure and method for efficiently handing block I/O requests. An infrastructure is described that includes flash memory and a controller that includes: a two dimensional (2D) linked list structure for temporarily storing BIO requests, wherein each BIO request specifies a set of LBAs and wherein the 2D linked list structure includes N vertical linked lists; a BIO request loader that applies a hash function to each LBA in a received BIO request to associate each LBA to one of N hash values, and loads the received BIO request into a horizontal linked list in the 2D linked list structure in which each LBA resides within a vertical linked list based on an associated hash values; and a linked list manager that determines which LBAs in the 2D linked list structure are eligible for processing and when a horizontal linked list can be removed.

Abstract: Methods for enhancing the speed performance of solid-state storage devices using stream-aware garbage collection. A garbage collection method in according to an embodiment includes: searching, in each of a plurality of super-block groups G, for a super-block set C that satisfies: all of the super-blocks m within the super-block set C in the super-block group G contain a lesser amount of valid data than the other super-blocks within the super-block group G; and a total amount of valid data within the super-block set C are just enough to complete an entire super-block; selecting the super-block group G that includes the super-block set C with the maximum number of super-blocks m; and performing garbage collection on the super-block set C in the selected super-block group G.

Abstract: A fiber optic cable includes a plurality of fusion spliced optical fibers, with a polymeric overcoating extending over a fusion splice region as well as over a stripped section of each optical fiber proximate to the fusion splice region, wherein the plurality of fusion spliced optical fibers has a non-coplanar arrangement at the fusion splice region. A method for fabricating a fiber optic cable includes fusion splicing first and second pluralities of optical fibers arranged in a respective one-dimensional array to form a plurality of fusion spliced optical fibers, and contacting the fusion splices as well as stripped sections of the fusion spliced optical fibers with polymeric material in a flowable state. Either before or after the contacting step, the method further includes altering a position of at least some of the spliced optical fibers to yield a configuration in which the plurality of fusion spliced optical fibers have a non-coplanar arrangement at the fusion splice region.

Abstract: An optical fiber fan-out assembly includes multiple optical fibers arranged in a one-dimensional array in a transition segment in which spacing between fibers is varied from a first pitch (e.g., a buffered fiber diameter of 900 ?m) to a second pitch (e.g., a coated fiber diameter of 250 ?m). A polymeric material encapsulates the optical fibers in the transition segment, and the assembly further includes multiple optical fiber legs each terminated with a fiber optic connector. Optical fibers extending beyond a boundary of the polymeric material are subject to being mass fusion spliced to another group of multiple optical fibers, and the fusion splices encapsulated with polymeric material, to form a fiber optic cable assembly. Methods for fabricating multi-fiber assemblies providing fan-out functionality are further provided, and the need for furcation tubes is avoided.

Abstract: An infrastructure, method and controller card for managing flash memory in a storage infrastructure. A system is provided that includes flash memory; and a controller that includes: an I/O request handler for handling standard read and write (R/W) operations requested from a host; a garbage collection (GC) system that performs a GC process on the flash memory in response to a threshold condition, wherein the GC process includes GC-induced R/W operations; and a scheduler that interleaves standard R/W operations with GC-induced R/W operations, wherein the scheduler calculates minimum and maximum boundaries for GC-induced R/W operations for a GC process based on an estimated GC latency.