10KM Fiber Optic OTDR Launch Cable Singlemode LC/SC/FC/ST APC/UPC Connectors

Description

10KM 9/125 singlemode Single bare fiber OTDR measuring Optical Fiber Cable OTDR test optical fiber reels
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Product Attributes
Brand: Neutral Model: the number of single-core single-mode fiber optic cable outer diameter 9/125 (mm)
Leigth: 10km Tensile strength allows: 5 (N) to allow lateral pressure: 0.18 (N / 100mm)
product description:
Bare multimode fiber
Optional connectors
10km length
Standard disc winding
Outside stearin plastic packaging
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 1km), 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 2km false test fiber.
Due to join the 2km 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 short optical fiber as the use of higher levels of precision optical power meter resolution, in order to reduce errors. Length measurement obtained with an OTDR. With the loss values can be obtained by dividing the length of the value per unit length attenuation values.
3, OTDR measurement curve as a reference only, OTDR measurement focuses exclude link obstacles.
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