摘要:
The present invention discloses a method for fabricating silica glass using a sol-gel process, which includes a sol forming step for forming a sol by mixing a starting material, deionized water and an additive together; gelation step for gelatinizing the sol after filling a circular mold with the gel produced; gel drying step for separating the gel from the circular mold and drying the gel; setting step for placing the gel inside of a heat chamber and injecting helium gas into the heat chamber; and low heat treatment step for pressurizing and depressurizing an internal pressure of the heat chamber repeatedly for several times.
摘要:
Disclosed are fabrication method and device for a porous optical fiber preform. The fabrication method includes the steps of (a) rotating one or more rotating disks in a deposition furnace, wherein a plurality of shoot rods are coupled to the one or more rotating disks and spaced at predetermined intervals along a circumferential direction of the one or more rotating disks; (b) supplying a raw material in a gaseous state into the deposition furnace to deposit the raw material onto the shoot rods; (c) after the formation of a silica shoot by deposition of the raw material on the shoot rods, eliminating the shoot rods from silica shoot; and (d) sintering the silica shoot from which the shoot rods are eliminated.
摘要:
A porous optical fiber provided with air holes and a method for manufacturing the same are disclosed. The porous optical fiber includes a core having a first refractivity extended in a longitudinal direction, an external cladding layer having a second refractivity surrounding the core, and an internal cladding layer having a third refractivity formed between the core and the external cladding layer and provided with a plurality of air holes scattered therethrough.
摘要:
Disclosed is a method for manufacturing a preform for a photonic crystal fiber (PCF). The method includes the steps of (A) forming a dry gel having a cylindrical shape by forming a silica slurry obtained by mixing a monomer and a dimer and drying the slurry, and (B) forming air holes having the desired size and arrangement through the dry gel, thereby easily regulating the size and arrangement of the air holes and manufacturing various shapes of the preform.
摘要:
Disclosed are apparatus and method for ultrasonically dispersing a silica sol such as is used in a process of manufacturing a silica glass by a sol-gel method. The apparatus includes a sol feeder for holding a sol to be dispersed, a sol container for containing the ultrasonically dispersed sol, a medium tank having a liquid-phase ultrasonic medium, an ultrasonic vibrator for generating ultrasonic waves within the tank, and a sol pipe for providing a sol feeding path connecting the sol feeder and the sol container to each other, the sol pipe having a portion submerged under the ultrasonic medium in the medium tank. The portion of the sol pipe submerged under the ultrasonic medium has a shape bent in a zigzagged fashion.
摘要:
A porous optical fiber provided with air holes and a method for manufacturing the same are disclosed. The porous optical fiber includes a core having a first refractivity extended in a longitudinal direction, an external cladding layer having a second refractivity surrounding the core, and an internal cladding layer having a third refractivity formed between the core and the external cladding layer and provided with a plurality of air holes scattered therethrough.
摘要:
A method of fabricating a preform used for produce a holey fiber having air holes therein is disclosed. The method includes the steps of preparing a tubular mold having a plurality of pins for forming a plurality of air holes aligned in a predetermined pattern, injecting silica slurry including a monomer and a dimer into the tubular mold and forming silica slurry into a gel, demolding the gel from the pins and the tubular mold, and drying and sintering the gel formed with air holes. The size and alignment of the air holes are easily adjusted, thereby achieving a large preform without contamination preform during the fabricating process.
摘要:
A composition for production of silica glass using a sol-gel process is described, comprising silica particles, a dispersing agent, and a solution containing a polymerizable monomer for formation of acrylic resin and a crosslink agent dissolved in distilled water. The polymerizable monomer is n-methylol acrylamide or n-methylol methacrylamide. A method for production of silica glass is described, including the step of adding silica particles and a dispersing agent to a premix solution of the polymerizable monomer for formation of acrylic resin and the crosslink agent dissolved in distilled water.
摘要:
An apparatus and method for distinguishing a panel of a display device is provided. A driver Integrated Circuit (IC) of the display device includes a plurality of pins that are electrically connected differently according to a type of the panel, and an output pin for outputting an output signal indicating a type of the panel according to an electric connection between the plurality of pins. A controller determines a type of the panel depending on the output signal provided from the driver IC, and applies a control signal corresponding to the determined type of the panel to the driver IC.
摘要:
Disclosed is a method for fabricating high-purity silica glass using a sol-gel processing that includes the steps of: (a) mixing a deionized water with a fluorine compound and a dispersion agent to prepare an aqueous premix solution; (b) mixing the aqueous premix solution with a fumed silica; (c) mixing the resulting mixture to form a dispersed sol; (d) aging the sol at the ambient temperature to stabilize silica particles; and, (e) removing air voids from the sol and adding a gelation agent.