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Introduction of performance fiber optic connectors
来源：捷美创芯
2012-12-06
Performance fiber optic connector , the first optical properties, in addition to considering the optical connector interchangeability , repeatability, tensile strength, temperature, and frequency of mating .
( 1 ) Optical properties: For optical fiber connector performance requirements , mainly insertion loss and return loss of these two basic parameters.
Insertion Loss (InsertionLoss) i.e. the connection loss , is the result of the introduction of the connector link caused by the loss of the effective optical power . Insertion loss as small as possible , the general requirements should be less than 0.5dB.
Return Loss (ReturnLoss, ReflectionLoss) refers to the power connector on the link light reflection suppression, its typical value should not be less than 25dB. The practical application of the connector , pin surface through a special polishing treatment can make the return loss greater , generally not less than 45dB.
( 2 ) interchangeable and reproducible optical connectors are universal passive device , for the same type of fiber optic connector , generally can be used in any combination , and can be used repeatedly , which is introduced into the additional losses are generally the range of less than 0.2dB .
( 3 ) tensile strength of the fiber optic connector of the fiber optic connector good , generally requires its tensile strength is not less than 90N.
( 4 ) temperature is generally required , fiber optic connectors must -40oC ~ +70 oC temperature to normal use.
( 5 ) mating cycles currently used fiber optic connectors can generally plug l000 times.
Marked Interpretation: the label that represents pigtail connector , we can often see the "FC / PC", "SC / PC" and so on, its meaning is as follows: "/" indicates the front part of the pigtail connector type, description see above . " / " Followed by an optical fiber connector section process, that grind mode . Fiber optic connector end -contact with PC, UPC, APC type three. < Tulio > PC - Physic Contact, is intended to mean physical contact , pin end of the physical body face ; UPC - Ultra Physical Contact, pin body face is super physical end ; APC type - Angled Physical Contact, insert physical end of the needle body angle end ; addition to the physical difference between the three is not the same , there are return loss, reflection loss that ( performance ) is not the same . PC <UPC <APC. Type multi-mode fiber without APC . "PC" in the telecom operator's devices are used widely , the joint cross-section is flat. "UPC" the decay of the optical connector energy than "PC" to be small, generally with special needs for devices , some manufacturers use an internal jumper optical connection device is FC / UPC, primarily to improve the device's own index . "APC" is used in broadcasting and CATV systems earlier , the APC using the angled end faces , can improve the quality of the television signal , mainly due to the TV signal is an analog light modulation , when the joint plane is perpendicular to the coupling when the reflected light along the original path back . Due to fiber index will once again return to the uneven distribution of the coupling surface , although energy is very small at this time but due to the analog signal is not completely eliminate the noise , so a clear equivalent in the original signal superimposed on a weak signal with a delay , performance on the screen is ghosting. Pigtail headband reflected light inclination can not return along the original path . General digital signal generally does not have this problem.
( 1 ) Optical properties: For optical fiber connector performance requirements , mainly insertion loss and return loss of these two basic parameters.
Insertion Loss (InsertionLoss) i.e. the connection loss , is the result of the introduction of the connector link caused by the loss of the effective optical power . Insertion loss as small as possible , the general requirements should be less than 0.5dB.
Return Loss (ReturnLoss, ReflectionLoss) refers to the power connector on the link light reflection suppression, its typical value should not be less than 25dB. The practical application of the connector , pin surface through a special polishing treatment can make the return loss greater , generally not less than 45dB.
( 2 ) interchangeable and reproducible optical connectors are universal passive device , for the same type of fiber optic connector , generally can be used in any combination , and can be used repeatedly , which is introduced into the additional losses are generally the range of less than 0.2dB .
( 3 ) tensile strength of the fiber optic connector of the fiber optic connector good , generally requires its tensile strength is not less than 90N.
( 4 ) temperature is generally required , fiber optic connectors must -40oC ~ +70 oC temperature to normal use.
( 5 ) mating cycles currently used fiber optic connectors can generally plug l000 times.
Marked Interpretation: the label that represents pigtail connector , we can often see the "FC / PC", "SC / PC" and so on, its meaning is as follows: "/" indicates the front part of the pigtail connector type, description see above . " / " Followed by an optical fiber connector section process, that grind mode . Fiber optic connector end -contact with PC, UPC, APC type three. < Tulio > PC - Physic Contact, is intended to mean physical contact , pin end of the physical body face ; UPC - Ultra Physical Contact, pin body face is super physical end ; APC type - Angled Physical Contact, insert physical end of the needle body angle end ; addition to the physical difference between the three is not the same , there are return loss, reflection loss that ( performance ) is not the same . PC <UPC <APC. Type multi-mode fiber without APC . "PC" in the telecom operator's devices are used widely , the joint cross-section is flat. "UPC" the decay of the optical connector energy than "PC" to be small, generally with special needs for devices , some manufacturers use an internal jumper optical connection device is FC / UPC, primarily to improve the device's own index . "APC" is used in broadcasting and CATV systems earlier , the APC using the angled end faces , can improve the quality of the television signal , mainly due to the TV signal is an analog light modulation , when the joint plane is perpendicular to the coupling when the reflected light along the original path back . Due to fiber index will once again return to the uneven distribution of the coupling surface , although energy is very small at this time but due to the analog signal is not completely eliminate the noise , so a clear equivalent in the original signal superimposed on a weak signal with a delay , performance on the screen is ghosting. Pigtail headband reflected light inclination can not return along the original path . General digital signal generally does not have this problem.