Optical power testing device
A testing device, a technology of optical power, applied in the direction of selection device, selection device of multiplexing system, transmission monitoring/test/fault measurement system, etc. And other issues
Pending Publication Date: 2017-01-04
SHANGHAI GRANDWAY TELECOM TECH +1
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide an optical power testing device in order to overcome the inconvenient identification of lasers with different wavelengths in the prior art, resulting in the inability to accurately measure their optical power
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[0019] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.
[0020] refer to figure 1 As shown, the optical power testing device of a preferred embodiment of the present invention mainly includes a fused tapered optical splitter 2, a control processing circuit 7, a photodetector 3 and a photodetector 4, and the fused tapered optical splitter 2 includes an input terminal 21, an output terminal 22 and an output terminal 23, the output terminal 22 is correspondingly connected to the photodetector 3, the output terminal 23 is correspondingly connected to the photodetector 4, and the fusion tapered optical branch The splitting ratio of the device 2 is 50:50, that is, 50% of the laser flows into the output end 22 of the fused tapered optical splitter 2, and 50% of the laser flows into the output end 23 of the fused fused tapered optical splitter 2 The input end 21 is conne...
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The invention discloses an optical power testing device. The optical power testing device comprises a fused biconical taper optical splitter, a control processing circuit, and a plurality of photoelectric detectors. The fused biconical taper optical splitter comprises an input end and a plurality of output ends, and every output end is correspondingly connected with one photoelectric detector. The fused biconical taper optical splitter is used to allocate laser to every photoelectric detector by adopting a coupling technology in order to generate corresponding optical current. The control processing circuit is used to calculate the corresponding optical power by the optical current, and is used to pre-store a first parameter and a second parameter. The control processing circuit is used to compare ratios among the measured optical power of every output end with the first parameter to identify the wavelengths of different lasers, and is used to measure the optical power of the input end by the optical power of any output end and the second parameter. The optical power testing device adopts a way of combining pre-storage, comparison, and calculation together, and then the lasers having the different wavelengths are identified automatically, and at the same time, the power intensities of the lasers in optical fibers are measured accurately.
Description
technical field [0001] The invention relates to an optical power testing device. Background technique [0002] PON (Passive Optical Network, Passive Optical Network) technology is a point-to-multipoint optical fiber access technology. An important advantage of the PON system is that a single optical fiber can transmit signals of different wavelengths, so that the optical fiber network can be used more effectively. However, the attenuation and loss of lasers with different wavelengths in the same system are different. Therefore, in the construction of a PON system, it is necessary to test the actual loss of optical fiber lines for different wavelengths of lasers. Since the detectors used in the optical power meter will generate corresponding photocurrents for all lasers of different wavelengths used in data transmission, it cannot be distinguished and judged by the magnitude of the optical power. [0003] Usually, in order to test the fiber loss of different wavelengths, th...
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IPC IPC(8): H04B10/07H04Q11/00
Inventor 汪亮任聪群吴庆凡
Owner SHANGHAI GRANDWAY TELECOM TECH