SU1397775A1 - Device for measuring transient attenuation among channels of fibre optical splitter - Google Patents

Abstract

The invention relates to fiber optics and allows to simplify the design of the device and improve the performance of the measurements. Transient attenuation of channels 30-33 of the studied splitter 29 is hampered by alternately turning on sources 1–4, the radiation of which is connected to the channels of the splitter on the corresponding terminals 9 and 11, 12 and 14, 15 and 17, 18 and 20 of splitters 29 through docking stations 25-28. The radiation emitted from the channels 30-33 is sensed by the photodetectors 21-24 connected to the terminals 10, 13, 16, 19 of the splitters 5-8. 1 il.

Description

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The invention relates to fiber optics and can be used to measure transient attenuation (attenuation of the light signal) between fiber optic channels, as well as similar devices of the first device.

The purpose of the invention is to simplify the design and improve the performance of the measurements.

The drawing shows a diagram of the proposed device.

A device for measuring the transient attenuation between the 4-channel Nogo channels of a star-shaped splitter contains sources 1-4 of radiation (for example, LEDs) 5 connected to 5-8 splitters, each of which has two first terminals and one second terminal ( for each splitter in the drawing from top to bottom, respectively, 9, 10 and 11; 12/13 and 14; 15, 16 and 17; 18, 19 and 20). A source of Radiation is connected to one of the first terminals of each splitter, a photodiode, for example a photodiode (21, 22, 23 and ;; .. 24), is connected to the second of the first conclusions. To the second output of each, develop a HOTEL; a docking station is connected, respectively 25, 26, 27, and 28). For Measurements, these docking stations are fiKM. nodes are connected to the tested splitter 29 with its channels 30, 31, 32, and 33.

I The device operates as follows.

From source 1, the radiation is injected: In channel 9, branch 5 and passes to its second output, channel 11. Next, this radiation is introduced into channel 30 of the splitter 29 through the connecting node 25 and distributed between its channels. Outgoing from channels 31, 32 and 33 splitter 29

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The radiation is sent to the clones 14, 17 and 20 of the p-illuminators 6, 7, and 8 C (respectively, and through their channels 13. 16 and 19 are directed to photomaterials 22, 23 and 24. Depending on (; the investigated splitter 29, the radiation can also fall on the photodetector 21 and measured by using it,

The output signal and the transitional attenuation between the channels of the splitters 5–8 are determined from the output signal, the transitional attenuation between channels 30–31, 30–32 and 30–33 of the studied coupler 29 is determined, as well as the value of the return signal in the canape 30 Next, by turning off source 1 and turning on sources 2, 3, and 4 in turn, the transient attenuation between the other channels is determined in the same way.

Claims (1)

Invention Formula A device for measuring transient attenuation between fiber optic channel junctions, containing radiation sources, photo detectors and associated docking stations for connecting channels of the tested branch cable, according to the number of these channels, in order to simplify the design and increase the measurement performance, each the docking station is connected to its source and photodetector through an optical splitter having two first and one second pins, each first pin being connected to a second pinch m, wherein one of the first vshodov connected to the radiation source, the second of the first terminals is connected to a photodetector, and a second terminal connected to the docking station.