2KM Fiber Optic Disc Single mode Fiber OTDR Test with Extended

Description

2KM Fiber Optic Disc Single mode Fiber OTDR Test with Extended Fiber Optical Time Domain Reflector Measurement
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Product Name: fiber optic fiber optic fiber optic disc
Land: China
Gauge: 2KG
Product description:
1 connecting head, the head of the fuse head.
3 standard disc winding.
4 outer plastic packaging
Using method
Optical time domain reflection (OTDR) measurement is used to measure the optical fiber, which is sometimes encountered in optical fiber links. A large attenuation value (xxdB/km) is often obtained when measuring the short fiber link. So that the attenuation index can not get a good evaluation and evaluation. This is why? What method can obtain a better test result?
Because the optical fiber link is short (typically less than 1km), the OTDR measurements have a certain fluctuation, which affects the final numerical calculation. In describing the technical parameters of the OTDR, there is an index of linearity, the general OTDR is 0.05dB/dB (E6000C:0.05dB/dB; N3900A:0.03dB/dB), in fact, this index is described by the volatility range of the OTDR curve. So for short fiber, the accuracy of OTDR measurement is to be challenged. This problem is also the common problem of the OTDR, then use what method to reduce the impact of it?
1, adding 2km test false fiber.
As a result of the addition of the 2km test, the fiber length is increased, and the effect will be reduced. Should be able to obtain a more satisfactory result. However, due to the increase of the length, it also introduces the test error, this method has a certain error caused by the test method. However, as the test data of the quality of the verification engineering is a valuable reference.
2, with the light source, optical power meter measurement link loss, with OTDR measurement length.
Because of the use of light source, optical power meter measurement of the link loss is close to the standard loss measurement method, so the accuracy of the loss measurement is improved. Of course, for short fiber as far as possible the use of a higher resolution accuracy of the optical power meter, in order to reduce the error. Length measurements were obtained using OTDR. The value of the unit length can be obtained by dividing the loss value by dividing the length value.
3, OTDR measurement curve only as a reference, the focus is to remove the link OTDR.
In short fiber optic measurement, OTDR measurement curve is best used as a reference, and as a qualitative basis, and not as a quantitative basis. OTDR more task for processing link obstacles, such as connector connection quality, splice welding quality, exploring fiber micro bend.
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