Optical power testing device of PON (passive optical network) system
A test device and optical power technology, which is applied in multiplexing system selection devices, selection devices, transmission monitoring/testing/fault measurement systems, etc., can solve the problem of not considering the use environment and being unable to efficiently test ONU burst optical signals Power and other issues
Inactive Publication Date: 2015-04-29
SHANGHAI GRANDWAY TELECOM TECH
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Problems solved by technology
[0008] The technical problem to be solved by the present invention is to overcome the defect that the optical power test device for the PON system in the prior art does not consider the actual use environment, and cannot efficiently test the power of the burst optical signal transmitted by the ONU uplink, and provides a method for simulating On the basis of the actual use environment of the PON system, the optical power test device in the PON system is realized to efficiently test the optical signal power function of the ONU uplink transmission
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[0030] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.
[0031] Such as figure 1 As shown, the present invention provides an optical power test device in a PON system, and the PON system includes an OLT1 and N user end devices 2 . In this embodiment, N is set to 4, but those skilled in the art know that the number of the client devices can be determined according to actual application conditions.
[0032] The optical power testing device includes four 2×2 optical splitters 3, a processing module 4 including four first channels 41, a monitoring module 5 including four second channels 51, and a 1×4 optical splitter device 6, a power attenuator 7 and a single-chip microcomputer 8, the side end of the 1×4 optical splitter 6 close to the 2×2 optical splitter 3 includes 4 ports 61, the power attenuator 7 is an electrical A controllable adjustable optical power attenuator can simulate th...
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The invention provides an optical power testing device of a PON (passive optical network) system. The optical power testing device comprises N first optical branching devices, a processing module comprising N first channels, a second optical branching device and a power attenuator, wherein N ports are formed in a side end, close to the first optical branching devices, of the second optical branching device, and the first optical branching devices are in one-to-one correspondence to customer premise equipment, the first channels and the ports; each first optical branching device is used for receiving an uplink optical signal transmitted by the corresponding customer premise equipment and dividing the uplink optical signal into two ways, one way of the uplink optical signal is transmitted to the corresponding first channel, and the other way of the uplink optical signal is transmitted to the corresponding port; the second optical branching device is used for coupling the uplink optical signal; the processing module is used for monitoring optical power of the uplink optical signal of each first channel; and the power attenuator is used for attenuating the coupled uplink optical signal and transmitting the uplink optical signal to an OLT (optical line terminal). With the adoption of the optical power testing device of the PON system, the optical signal power of uplink transmission and the optical signal power of downlink transmission are detected rapidly and conveniently.
Description
technical field [0001] The present invention relates to a PON (Passive Optical Network, passive optical network) system, in particular to an optical power test device in the PON system. Background technique [0002] Passive optical network technology is a point-to-multipoint optical fiber access technology. The basic structure of the PON system includes the OLT (Optical Line Termination, optical line terminal) located in the central office and a series of user-end equipment located in the user premises. The user-end equipment here can be either an ONU (Optical Network Unit, optical network unit) , It can also be ONT (Optical Network Termination, optical network terminal), and among these devices is ODN (Optical Distribution Network, optical distribution network) composed of optical fiber, passive optical splitter or passive coupler. [0003] At present, FTTx (fiber to the x, collectively referred to as fiber-to-the-home, fiber-to-the-building, and fiber-to-the-premises, etc...
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IPC IPC(8): H04B10/07H04Q11/00
Inventor 汪亮侯良会陈义兵
Owner SHANGHAI GRANDWAY TELECOM TECH