Gigabit broadband isolation pseudo-synchronous digital hierarchical (PDH) optical transmitter and receiver

Abstract

The invention relates to a gigabit broadband isolation pseudo-synchronous digital hierarchical (PDH) optical transmitter and receiver, which consists of a cabinet and an optical transmitter and receiver circuit in the cabinet, wherein the optical transmitter and receiver circuit comprises a field programmable gate array (FPGA) core module; the FPGA core module is connected with a SerDes module, a key control module, a module for the drive and level conversion of the first to 16th paths of E1, a 1,000 M Ethernet controller and a 100 M Ethernet controller respectively; the SerDes module is also connected with a fiber interface by a photoelectric conversion module; the module for the drive and level conversion of the first to 16th paths of E1, the 1,000 M Ethernet controller and the 100 M Ethernet controller are connected with 1-16 paths of E1 interfaces, a 1,000 M Ethernet interface and a 100 M Ethernet interface by isolation transformers respectively; and a power conversion module is connected with each module to supply working power to the modules. The gigabit broadband isolation PDH optical transmitter and receiver has a rational design, fully utilizes optical fiber resources, solves the problems of insufficient bandwidth and network data security of the conventional Ethernet, well realizes the fiber optic communication function of combining together E1 data channels and two paths of Ethernet data channels, avoids the waste of communication resources and saves the communication cost.

Description

technical field [0001] The invention belongs to equipment in the field of optical fiber communication, in particular to a PDH optical transceiver with gigabit broadband isolation. Background technique [0002] The E1 communication standard (30-channel pulse code modulation PCM in Europe) is widely used in my country's communication network, and PDH optical transceivers with E1 interface have been widely used in the communication network. PDH optical transceivers have many advantages such as simple access, low cost, and convenient maintenance. They are widely used in many communication networks such as China Mobile, China Unicom, public security, electric power, and railways. Traditional PDH optical transceivers generally provide 1 to 16 E1 interfaces and 1 to 4 100M Ethernet interfaces (the total bandwidth is no more than 100Mbps). With the development of society, many services of some private network customers need IP bearer, such as video conferencing, High-definition ima...

AI Technical Summary

Problems solved by technology

Traditional PDH optical transceivers generally provide 1 to 16 E1 interfaces and 1 to 4 100M Ethernet interfaces (the total bandwidth is no more than 100Mbps). With the development of society, many services of some private network customers need IP bearer, such as video conferencing, High-definition image monitoring, popularization of digital office network, etc., so the Ethernet transmission with 100Mbps bandwidth is obviously not enough, and to some extent, there is competition for bandwidth between businesses and network congestion

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