Fiber coupler (Coupler) is also known as the differences (Splitter), connectors, adapters, optical fiber flange, for the realization of the optical signal splitter / combiners, or fiber optic link to the elongate element, which belongs to the passive optical element areas in telecommunications networks, cable television networks, subscriber loop system, the LAN will be applied to.
Fiber optic couplers or components used to extend fiber optic link, which belongs to the field of optical passive components, telecommunications networks, cable television networks, subscriber loop system, the LAN will be applied to. Fiber coupler can be divided into standard coupler (part of the waveguide, double branch, unit 1 × 2, ie the optical signal into two power), direct-attached coupler (connected to the same or different types of fiber optical interface 2 to extend the fiber link), star / tree couplers and wavelength multiplexer (WDM, if the wavelength is a high-density separation, ie a narrow wavelength spacing, belongs DWDM), making way there sintering (Fuse), micro-optical (Micro Optics), waveguide-type (Wave Guide) three, and to a process for producing sintered majority (about 90%). Sintering production method way is to burn two fibers together and melt tension, so that the core polymerization together to achieve light coupling effects, the most important production equipment is the fiber splicing machine, which is an important step, though important step in part by the machine OEM, but after sintering, still people working detection package, and therefore labor costs account for about 10 to 15 percent, moreover artificial detection package must ensure quality consistency, which is when mass production must be overcome, but the technical difficulties of not if DWDM module and optical active components is high, so the initial manufacturers wishing to enter the fiber industry, the majority will be cut from the optocoupler, gross profit in the 20 to 30 percent.
According to different fiber coupling are classified as follows: SC fiber optic coupler: for SC fiber interface, RJ-45 interface it looks very similar, but some SC interfaces appear more flat, the obvious difference is the inside of the contacts, if is 8 thin copper contacts, it is the RJ-45 interface, if it is a copper cylinder is SC fiber interface. LC fiber coupler: LC optical interface used in connection connector SFP module, which uses modular jack made easy operation (RJ) latch mechanism. (Routers used) FC fiber coupler: Applied FC fiber interface, external strengthening way is to use a metal sleeve, fastening means for turnbuckles. Generally adopt ODF side (with the patch maximum) ST fiber coupler: Applied ST fiber interface, commonly used in fiber optic patch panels, rounded shell, fastening means for turnbuckles. (For 10Base-F connections, usually ST type connectors commonly used in fiber optic patch panel)
Fiber couplers are detachably (active) connection between the optical fiber and the optical devices, the two end faces of the optical fiber which is the precise docking to the light emitted energy to maximize the optical output coupled to the receiver to the fiber, intervention light and make it so that the impact on the system link is minimized. The waveguide fiber coupler, generally a component having a Y-branch optical signal from an optical fiber input can use it to decile. When the opening angle of the branch line coupler is increased, the light leaking in the clad layer so as to increase the excess loss increased, so that the opening angle of generally less than 30 °, so the length of the waveguide-type optical-fiber coupler can not be too short.
As the highly developing optical fiber network and larger demand of fiber optic products, in 2009, OF-LINK merged with Jiangsu Beidou Technology Co., Ltd. The company located in Chongchuan Development Zone in Nantong City, Jiangsu Province. It’s a hi-tech company who engages in the compass satellite applications and optical fiber communications; OF-LINK participates in its optical fiber part and solely responsible for the overseas market We finished the construction of the production lines for annual output of 1 million units’ timing equipments, 9. million units ‘fiber optic connectors and 100 thousand units’ PLC splitters. The project is listed in Major Scientific and Technological Achievements into Special Funds Program, has wide industry prospects.