FTTH embedded type SC subgroups, cold cold subgroups, fiber connect scalp line fiber connector telecommunication level quickly

Optical fiberQuick connectorSummary:
Optical fiber at the scene of the quick connector and optical fiber connectors, this SC fiber optic quick connector is simple, rapid construction, no special requirements the operating environment, no source of construction, the tool is simple, easy to carry.In the end, visual inspection was carried out the effect of fiber connection operation, judge in quality, the first time to avoid late correction, reduce construction cost.Embedded fiber structure is in the factory will be a bare fiber placement in advanceCeramic insert coreInside, and compared the grinding, the operator at the scene only need to insert the other end cutting after good optical fiber;Due to the front of the embedded structure embedded fiber factory grinding and joint filler matching fluid, don’t rely too much the planeness and evenness of the optical fiber end face cutting, greatly reduces the requirement for the operator proficiency;As a result of the joint face USES a grinding process in advance, so good return loss index;The product structure can achieve insertion loss and return loss (below 0.5 dB) more than 45 dB (a) index, reliability and high stability, is suitable for indoor FTTH access link node is used.

Optical fiber quick connector technology indicators:
Insertion loss: 0.3 dB (inspection of 0.21 dB) or less
Return loss: 50 dB or higher (0.6 dB) were volatility
High temperature experiment: 0.3 dB (85 °) or less
40 ° low temperature experiment: 0.3 dB or less (-)
Temperature cycle: 0.3 dB or less (repeated cycle – 40 ° ~ 85 °, the return loss variable &; 5 dB)
Hot and humid experiment: 0.3 dB (85 °, 85% RH) or less
Repeat test: 0.3 dB or less (repeat plug after 10 times, return loss variable &; 5 dB)
Mechanical durability: 0.3 dB or less (after plug 500 repetitions, return loss variable &; 5 dB)
Tensile test: 0.3 dB or less 10 min (50 n L = 22 )
Vibration experiment: 0.3 dB or less (10 to 55 hz three-way, 2 hours in each direction)
Flooding experiment: 0.3 dB or less (43 °, PH = 5.5 + 0.5) 56 mm
V groove clamping: 0.3 dB (4 n / 30 s) or less
Highly fall: 0.3 dB (4 meters, 3) or less
Application scope: FTTH, optical fiber room line modification

Optical fiber quick connector should be embedded single-mode fiber, the end of the connector should be polished in advance in the factory, no need for grinding in construction site and agglutination.Quick PC type optical fiber connector end at the factory should be polished to a PC or UPC sphere, APC fiber fast connector end must cant polishing for APC in the factory, to ensure the quality of the connector end face and good reflection performance.

Optical fiber connector advantages and future trend of moving:

Fiber quick connector and light up in your child product development idea is consistent, namely in the narrow space inside can easily realize the opening of the optical fiber link.Therefore, optical fiber quick connector and optical fiber in the child are designed to simplify the FTTH access indoor construction.This kind of idea is more conform to the large-scale deployment of FTTH application, FTTH construction has the characteristics of periodic and dispersion, and as a result, a lot of equipped with optical fiberWelding machineIt is not realistic, mainly limited are: 1, large input costs;2, carry not convenient;3, the operation space is limited.
Optical fiber quick connector and optical fiber succeeded the application types.Optical link node straight weld fixed connection, the fiber connection can be used for cold succeeded, activity node connections, optical fiber quick connector may be used for direct termination;Through the analysis of the application situation of nearly two years concluded as follows:

A) fiber connection size is not uniform, the traditional fused fiber disc slot card does not ;
B) fiber connection was not significant cost savings, user enthusiasm decline;
C) fiber quick connector cable termination leather line, directly to save the investment of a tail fiber, significantly;
D) optical fiber size difference between quick connector manufacturer does not affect the application of box of form a complete set of requirements;
E) LThe Socket(outlet) the application of optical fiber quick connector is less than joint type optical fiber connector type fast;

Analysis is as follows: in the true sense of the FTTH access, leather line cable home invasion into the ONU terminal box adopts quick connector type optical fiber connector for termination after insert the ONU light interface directly, instead of the first to introduce the light socket box end up the connector (light jump line) connected by optical fiber activities ONU equipment;Although the characteristics of the application of quick connector is significant, but its application still suggest limited to access to user side use FTTH, this also is the purpose of product development.For FTTH access link node processing, outdoor light should still adopts the traditional way of hot melt after processing.Fiber as a result, we will quick connector is defined as the application places: FTTH access building branch home cable (skin line cable) termination using both ends.

The classification of the optical fiber quick connector application and realization principle:

1, the classification of fiber optic quick connector:

Joint type and application of L type socket type has been introduced above, the following analysis according to different cable type in the actual application situation and quick dry and embedded structure of optical fiber connector implementation principle.Covered wire cable is FTTH access indoor one of the most important line type, greatly improve the efficiency of the construction, so in the FTTH access, in addition to the special occasion branch house line all adopt the structure of spring type, and therefore x3.0 2.0 mm type optical fiber quick connector is currently the most conventional procurement type operators;About 250 um, 0.9 mm and 2.0 mm, 3.0 mm type optical fiber connector type fast application is less;As the real size of FTTH deployment and the vertical type cloth cable new cable inside the building, the application of optical fiber quick connector will extend to the end of vertical cloth cable some differences with reinforce, whether increase direct docking branch divider or home skin line cable, connector type optical fiber quick connector has its uniqueness.Quick using optical fiber connectors can no need to melt fibre plate, without tail fiber, and can make the form a complete set of housing simplification, cost can be significantly reduced.

2, the structure of the optical principle of quick connector

A) straight through structure This structure is very simple, the advantage is easy to realize the cost is low, but the disadvantages of many: strict in fiber diameter, strict in cutting face and cutting length, more strict with the intensity of the blessing;Or any place with the product does not will causes the fluctuation of parameters;In addition, due to the return loss index is wholly dependent the situation of fiber cutting surface so products with poor return loss index, proficient in the operator is very demanding.The product structure can be applied to the temporary fiber optic link to repair, but is not suitable for FTTH access link scale use.

B) embedded fiber structure embedded fiber structure is used in the factory would insert a bare fiber placement in advance ceramic core, and will be at the of the ground, the operator at the scene only need to insert the other end of the cut after good optical fiber;Due to the front of the embedded structure embedded fiber factory grinding and joint filler matching fluid, don’t rely too much the planeness and evenness of the optical fiber end face cutting, greatly reduces the requirement for the operator proficiency;As a result of the joint face USES a grinding process in advance, so good return loss index;The product structure can achieve insertion loss and return loss (below 0.5 dB) more than 45 dB (a) index, reliability and high stability, is suitable for indoor FTTH access link node is used.