EPON repeater device for establishing double-loop self-healing network

Abstract

The invention relates to an EPON repeater device for establishing a double-loop self-healing network, which solves the problems in the prior art and is characterized by comprising an OEO signal amplification shaper for amplifying and shaping uplink and downlink signals and an uplink inter-frame reset signal processing chip, wherein each path of OEO signal amplification shaper comprises an OLT interface, an OLT side optical module, an ONU side optical module and an ONU interface which are connected in sequence; the ONU side optical module generates an additional light receiving indication signal among the optical burst pulses, the light receiving indication signal is led to the uplink inter-frame reset signal processing chip and processed by the uplink inter-frame reset signal processing chip to generate an uplink inter-frame reset signal used for resetting a limiting amplifier in the ONU side optical module, so that the limiting amplifier is adjusted to adapt to the signal intensity working state of the next optical pulse.

Description

technical field [0001] The invention belongs to an EPON repeater device, and relates to an EPON repeater device for forming a double-ring self-healing network. Background technique [0002] The EPON repeater is a device that amplifies and shapes the EPON signal through the OEO method; OEO is photoelectricity, which first converts the input optical signal into an electrical signal, performs amplification and shaping, and then converts it into an enhanced optical signal output; EPON It adopts single-fiber bidirectional working mode, and integrates 1490nm and 1310nm two-band WDM internally, which can couple the optical signals in the downlink and uplink directions to the same optical fiber, thereby saving optical fibers and optical splitters; in EPON repeaters, need Separate the uplink and downlink optical signals, amplify and shape them separately, and then couple the downlink and uplink optical signals to the same optical fiber through WDM multiplexing; EPON has been widely u...

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of using a large number of active optical connectors and flanges in the prior art, resulting in rapid loss of optical power, reducing the number of ONUs that can be connected to the loop, generally 6 to 8, and the communication distance is relatively short. Within 20 kilometers, it is very inconvenient to use. Provide an EPON repeater device for forming a double-ring self-healing network

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