67 results about "Intermediate Fiber" patented technology

A process is disclosed for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible fluoropolymer particles and an aqueous solution of a matrix polymer is formed. The non-melt-processible fluoropolymer particles have an SSG of less than about 2.40 and comprise a core of high molecular weight polytetrafluoroethylene and a shell of lower molecular weight polytetrafluoroethylene or modified polytetrafluoroethylene. The mixture is extruded into a coagulation bath containing a concentration of ions which coagulate the matrix polymer to form an intermediate fiber structure. The intermediate fiber structure is sintered to decompose the matrix polymer and coalesce the non-melt-processible fluoropolymer particles to form the fiber. The present invention also provides for spinning composition useful for the dispersion spinning of non-melt-processible fluoropolymer fiber.

Techniques for flexible coupling between an optical coupling receptacle / port of an optical transceiver housing and optical components within the same are disposed. In an embodiment, an optical transceiver housing includes an intermediate fiber with a first end optically coupled to an optical coupling port and a second end optically coupled to a multiplexer / de-multiplexer device, e.g., an arrayed waveguide grating (AWG) device, PLC splitter, and so on. The intermediate fiber may be routed in the transceiver housing in a manner that and the radius of the bends may be optimized to reduce fiber bending losses. The techniques herein are equally applicable to both ROSA and TOSA modules and may be utilized to achieve flexible coupling for multi-channel transceiver devices.

A coupling arrangement according to the present invention comprises a target fiber, at least one feeding fiber and an intermediate fiber. The intermediate fiber comprises an input end and a converging taper portion, wherein the input end of the intermediate fiber is spliced to an output end of the feeding fiber in an axial way. Due to this coupling electromagnetic radiation being fed through the feeding fiber enters the intermediate fiber through its input end surface. The converging taper portion of the intermediate fiber is fused to the target fiber in the transfer region in a non-axial way. This leads to a non-axial coupling such that electromagnetic radiation, which entered the intermediate fiber through the input end surface thereof, is coupled into the target fiber.

The invention discloses an air pressure control method and device used for photonic band gap optical fiber drawing, and belongs to the technical field of optical fiber manufacturing. The method includes firstly inserting an intermediate into an intermediate fixing table, sealing the intermediate and the intermediate fixing table with sealing glue, connecting a single-cavity body and a double-cavity body in a threaded manner, with a fiber core duct being inserted into an intermediate fiber core during connection, and after assembling is finished, communicating a fiber-core-cavity gas pipe port, a cladding-cavity gas pipe port and an outer-cavity gas pipe port to a gas chamber of an air pressure control electric part through gas guiding pipes separately to achieve independent air pressure control of three regions which are a fiber core cavity, a cladding cavity and an outer cavity. The method and the device overcome a problem of independent precise air pressure control of the three regions during a photonic band gap optical fiber drawing process. The method and the device have universality and are suitable for porous micro-structured optical fiber drawing requiring independent air pressure control for separated regions. A pressure difference is adopted to determine on-off control time of an electromagnetic valve, thus controlling a gas flux through the pressure difference and increasing air pressure control precision.

A process for spinning a fully water washed fluorinated olefinic polymer intermediate fiber structure from a mixture of an aqueous dispersion of particles of the fluorinated olefinic polymer and a solution of a cellulosic ether.