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Specification
Brand : YUNSI
BulletPoint1 : Full-spectrum single-mode fiber
BulletPoint2 : Macro bending radius is small, in line with G.652D standard
BulletPoint3 : Attenuation value is small
BulletPoint4 : Suitable for any optical test environment
Color : OneColor
CompatibleDevices : PC
ConnectorType : Optical
ExternallyAssignedProductIdentifier : 9369778869501
IndoorOutdoorUsage1 : outdoor
IndoorOutdoorUsage2 : indoor
ItemName : YUNSI Optical Fiber Accessories 1-50km/roll Bare Optical Fibre G652D Singlemode SM 9/125um Without Connector for OTDR Test Launch Cable Fiber Reels for FTTH (Size : 40KM)
ItemPackageQuantity : 1
ItemTypeKeyword : network-and-cable-testers
Manufacturer : hangfuture
NumberOfItems : 1
PartNumber : hangfuture
ProductDescription : 5km/roll Bare optical fibre G652D Singlemode SM 9/125um 5000m/spool without connector for OTDR test launch cable fiber reels
Feature:Without connector

product description:
Bare multimode fiber
Optional connectors
Standard disc winding
Outside stearin plastic packaging
Quantity:1PC

G652D:
Buy 1KM------Buy 50KM

Product Usage:
Using optical time-domain reflectometer (OTDR) measurement fiber, sometimes encounter situations very short fiber optic link. When measuring short fiber links often get large attenuation value (xxdB / km). The attenuation index can not get a good evaluation and assessment. Why is this? What method can obtain a better test result?
Since the optical fiber link is short (generally less than 5km), OTDR measured curve has some volatility, these tiny fluctuations influence the final numerical calculation. OTDR described in the technical parameters, there are indicators of a linear degree, the general OTDR this indicator is 0.05dB / dB (E6000C: 0.05dB / dB; N3900A: 0.03dB / dB), in fact, this indicator is described OTDR fluctuation range of the curve. So for short fiber, OTDR measurement accuracy is to be challenged. This problem is also common problems currently faced by the OTDR, then the method used to reduce this impact?
1, added 5km false test fiber.
Due to join the 5km false test fiber, the fiber length is growth, this effect will be reduced. You should be able to get a satisfactory result. However, due to the increased length, but also introduced a test error, this method still has some errors caused by test method. But the quality of the project as a validation test data are quite reference value.
2, light source, optical power meter measuring the link loss, measure length with OTDR.
Due to the use of a light source, optical power meter measurement close to the standard loss link loss measurement method, so the loss of measurement accuracy improves. Of course, for the
ProductSiteLaunchDate : 2022-04-20T07:21:04.835Z
Size : 40KM
UnitCount : 1
UnspscCode : 26121600