Optical link terminal, optical time domain reflectometer, optical-signal sending and receiving method and system
A technology of optical line terminals and optical signals, applied in the field of optical networks, can solve problems such as interrupting normal communication of data signals and reducing user satisfaction, and achieve the effect of improving satisfaction
Active Publication Date: 2013-07-31
HUAWEI TECH CO LTD
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Problems solved by technology
[0004] In the process of realizing the above-mentioned fault detection, since the test signal sent and received by the optical line terminal equipment and the data signal sent and received by the optical network terminal are carried out in a way of sharing the receiving channel, the normal communication of the data signal must be interrupted during the OTDR test. Reduced user satisfaction
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[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0066] An embodiment of the present invention provides an optical line terminal 1, such as figure 1 As shown, it includes: a test signal transceiving unit 11 and a data signal transceiving unit 12;
[0067] The test signal transceiver unit 11 includes: an OTDR analog / digital converter 111 (OTDR analog / digital, OTDR A / D for short), an OTDR processor 112 (OTDR Process), an OTDR emitting laser 113 of a first wavelength, a first photoelectric converter 114 , opti...
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The embodiment of the invention provides an optical link terminal, an optical time domain reflectometer (OTDR), an optical-signal sending and receiving method and a system. The optical link terminal, the OTDR, the method and the system relate to the technical field of optical networks and enable an OTDR test and data communication to be carried out simultaneously and satisfaction degree of users to be improved. The optical line terminal includes a test-signal sending and receiving unit and a data-signal sending and receiving unit, wherein the test-signal sending and receiving unit includes an OTDR analog-digital converter, an OTDR processor, an OTDR emitting laser of a first wave length, a first photoelectric converter, a light-beam splitter and an optical splitter; and the data-signal sending and receiving device includes the first optical splitter, a second photoelectric converter and a burst mode limited amplifier. The optical link terminal, the OTDR, the optical-signal sending and receiving method and the system are applicable to the detection of a passive optical network.
Description
technical field [0001] The invention relates to the technical field of optical networks, in particular to an optical line terminal, an optical time domain reflectometer, and an optical signal transceiving method and system. Background technique [0002] With the wide application of optical fiber technology in the field of optical network technology, the communication network with optical fiber as the transmission line gradually replaces the communication network with copper wire as the transmission line. Due to the rapid expansion of passive optical network (PON) network construction, the installation, acceptance test and daily maintenance of PON network are particularly important. PON equipment belongs to the access layer equipment and is closely connected with ordinary users. Therefore, maintenance personnel are required to quickly determine the nature and location of the fault in order to repair the fault. An Optical Time Domain Reflectometer (OTDR) plays an important ro...
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Login to View More IPC IPC(8): H04B10/071H04B10/40
CPCH04B10/07H04B10/071
Inventor 李泽彬杨素林殷锦蓉
Owner HUAWEI TECH CO LTD