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and (648, the characteristics of the fiber transmission loss “to determine the distance optical transport stability and reliability of the vehicle and one of the most important factors of production of fiber optical loss of the relocation of several reasons for continuing to build fiber optic network, maintenance and little else other than the optics transmission loss caused by using these factors and how to reduce transmission losses losses fiber resulting from the use of core loss loss loss put paste the fiber core and overlapping activities and the loss of loss of loss of consecutive non-bending and other factors, generating the request of the loss caused to the environments in the category of losses BR BR Paste (1) and the solution 0.1 Loss of Contact 1 R. put fiber optical fiber and include the loss of loss of the main factors with factors external to loss of connectivity and loss of three types of joint activities BR t (1) and loss of natural optical fiber mode field diameter of primary stems consistent core fiber core diameter mismatch is the cross-section of a circular concentration fiber core and cladding bad 4 00 most influential is the mode field diameter of a constant loss of 0.2 t fusion welding main factors are mainly due to the loss axis of joint dislocation axial tilt before the separation of the face of the space end of the fiber is not fully differentiate refractive dirty end of the fiber and continue the level of CEO electric welding machine welding parameters step cleaner working environment cleaner environment and other factors BR 3 BR loss of joint activity the activity of the main factors linked with no loss of joint activities, mainly from poor dirty poor call quality and the same thing with a loss factor of isolation such as removing middle end of the joint fracture dislocation caused by poor rates ر 1.2 Paste the solution should be the loss of engineering design 1′ll construction and maintenance work using the same optical characteristics of a high quality of the line to the maximum extent possible from same batch of high-quality fiber brand names bare as possible to match the characteristics of optical fibers to the Qatar field fusion mode optical fiber to reduce the impact of loss t 0.2 Cable construction are in accordance with strict procedures and conditions of t disk to the maximum extent possible configuration of the entire disk and one 500 m in the disk to reduce the number of joints when installed in strict accordance with the license plate number and the conclusion the last to extend the cable to reduce losses in the value of 0.3 t selection of staff trained and experienced and continue and continue to try not to follow the level of staff directly affected the size of the loss of individuals to Paste the optical fiber links should be fully consistent with the welding process to follow the strict control on the process of welding the loss of joint use of the visual field OTDR reflectometer tracking time loss to paste 0 08 dB (A) does not meet those requirements should be welding again using the visual field Reflectometer OTDR measurement time of a common method of loss and calculate the average of two results of one-size-OTDR method to remove part human error 0.4 T needed to ensure environmental compliance continue not banned in moist environments and dusty open cut cables connected to the tool processes and materials must be kept clean moist does not allow you must be prepared fiber optic connectors optical fibers to cut clean the dirt has not been cut fiber failure exposure to air for a long time, especially in damp and dusty environments follow the surroundings temperature is very low temperature should be done the necessary measures BR 5 BR prepare the perfect end of the fiber optic BR BR preparing the end of the fiber is the most critical processes to improve the face end of the fiber is the one who decides whether or not the paste fiber optical loss of the important causes of high-quality flat face should not be biting any defect and should be axis perpendicular to the axis of the end of the fiber to less than 3 0 degree viewing angle mirror polished and kept clean to prevent dust pollution ‘)

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