Optical line terminal for wavelength division multiplexing-time division multiplexing passive optical network

Abstract

The invention relates to an optical line terminal for a wavelength division multiplexing-time division multiplexing passive optical network. The optical line terminal comprises an optical sub-assembly, a continuous mode transmitter control circuit, a burst mode receiver control circuit, and a micro control unit, wherein the continuous mode transmitter control circuit is connected with the optical sub-assembly, and controls the light-emitting state of the optical sub-assembly; the burst mode receiver control circuit is connected with the optical sub-assembly to provide a working voltage for the optical sub-assembly, and receives an electrical signal of the optical sub-assembly; and both the continuous mode transmitter control circuit and the burst mode receiver control circuit are connected with the micro control unit, and are controlled and monitored by the micro control unit. The optical line terminal has the continuous mode transmitter control circuit for transmitting the optical signal and the burst mode receiver control circuit for processing the burst uplink optical signal, and is applied to a wavelength division multiplexing-time division multiplexing (WDM-TDM) passive optical network. Compared with the method for improving the bandwidth bottleneck by adopting the WDM simply, the optical line terminal for the wavelength division multiplexing-time division multiplexing passive optical network has lower cost.

Description

Optical Line Termination for WDM-TDM Passive Optical Networks 【Technical field】 The invention relates to a passive optical fiber network, in particular to an optical line terminal of a wavelength division multiplexing-time division multiplexing passive optical fiber network. 【Background technique】 The fact that passive optical network technology is the technology of choice for fiber access networks is widely accepted. At present, the main implementation form of passive optical network technology is time division multiplexing mode, namely time division multiplexing passive optical network (TDMPON). TDMPON uplink adopts time-division multiplexing, and each optical network unit (ONU) at the user end uploads optical signals in a designated time slot without interfering with each other. The downlink of TDM-PON adopts the broadcast mode, and each ONU can only recognize the information segment of the corresponding identifier in the continuous optical signal downlinked by the op...

AI Technical Summary

Problems solved by technology

However, WDMPON technology has certain cost pressures, mainly from optical components

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