Industrial passive optical network system and signal transmission method thereof
A technology of passive optical network and signal transmission, which is applied in the direction of optical multiplexing system, wavelength division multiplexing system, multiplexing system selection device, etc., can solve the problems such as unable to meet asymmetric rate requirements, and achieve Effects of meeting asymmetric rate requirements
Active Publication Date: 2021-01-08
WUHAN POST & TELECOMM RES INST CO LTD
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Problems solved by technology
[0011] The embodiment of the present application provides an industrial passive optical network system and its signal transmission method to solve the technical problem in the related art that cannot meet the asymmetric rate requirements of high uplink and low downlink in industrial scenarios
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[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0036] see figure 1 As shown, the embodiment of the present application provides an industrial passive optical network system, which includes at least one optical line terminal OLT and a plurality of optical network units ONU.
[0037] The optical line terminal OLT includes a plurality of uplink receivers, a demultiplexer, a downlink t...
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The invention relates to an industrial passive optical network system and a signal transmission method thereof, the system comprises at least one optical line terminal OLT and a plurality of optical network units ONU, the optical line terminal (OLT) comprises a plurality of uplink receivers, a wave separator, a downlink transmitter and a first circulator, all the uplink receivers are connected with the wave separator, each uplink receiver is used for receiving an optical signal with a corresponding wavelength, and the downlink transmitter and the wave separator are connected with the first circulator; and each optical network unit (ONU) comprises a tunable laser, the tunable laser is used for transmitting an optical signal corresponding to the wavelength of one of the uplink receivers, andall the ONUs are connected with the optical line terminal (OLT). According to the industrial passive optical network system, the uplink high rate can be realized in a mode of combining wavelength division and time division, so that the asymmetric rate requirement of an industrial application scene is met.
Description
technical field [0001] The present application relates to the technical field of passive optical network systems, in particular to an industrial passive optical network system and a signal transmission method thereof. Background technique [0002] As people's daily work and life rely more and more on the Internet, the network access medium has gradually changed from copper wire and coaxial to optical fiber. Today, the passive optical network (PON, Passive Optical Network) technology using optical fiber as the medium has become the most important technical means for the majority of users to access the Internet. [0003] The PON system includes an optical line terminal (OLT: Optical Line Terminal) and an optical network unit (ONU: Optical Network Unites). Each ONU is connected to the OLT located in the central office through a remote node (RN: Remote Node). [0004] The PONs that have been deployed on a large scale in the existing network include GPON (Gigabit-Capable PON) an...
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Login to View More IPC IPC(8): H04Q11/00H04J14/02
CPCH04Q11/0062H04Q11/0067H04J14/0204H04Q2011/0086
Inventor 张新全张皓程容余少华
Owner WUHAN POST & TELECOMM RES INST CO LTD