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Quick signal indication generating device for optical line terminal

A technology of optical line terminal and fast signal, which is applied in the direction of multiplexing system selection device, selection device, electromagnetic wave transmission system, etc., can solve the problems of poor stability and high cost of dedicated chips, and reduce product cost and reduce Circuit complexity, the effect of enhancing system reliability

Inactive Publication Date: 2012-05-02
SUPERXON (CHENGDU) TECH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current solutions use dedicated chips, such as logic triggers, to achieve fast response to SD signals, but the cost of dedicated chips is relatively high and the stability is relatively poor

Method used

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  • Quick signal indication generating device for optical line terminal
  • Quick signal indication generating device for optical line terminal

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Embodiment Construction

[0012] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0013] Any feature disclosed in this specification (including any claims, abstract and drawings), unless specifically stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features. At the same time, the description of replacement features in this manual is a description of equivalent technical features, and shall not be regarded as a donation to the public.

[0014] If the terms in this specification (including any claims, abstracts and drawings) have both the general meaning and the specific meaning in this field, unless otherwise specified, they are all defined as the specific meaning in this field.

[0015] The technical sol...

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Abstract

The invention discloses a quick signal indication generating device for an optical line terminal (OLT). The quick signal indication generating device comprises a reference line, a peak detection line and a comparator. the device is characterized in that a reference level set by the reference line is compared with a peak level detected by the peak detection line by virtue of the comparator; if the peak level is greater than the reference level, a standard deviation (SD) high-level signal which indicates the arrival of a signal is output; if the peak value is less than the reference level, an SD low-level signal which indicates the loss of the signal is output, therefore, the aim of quickly generating the SD signals is achieved; and an analog switch is connected in parallel with a capacitor of the peak detection line, and the on and off of the switch can be controlled by RESET, so that quick discharging is realized and the comparator can quickly output the SD low-level signal to meet the requirement of a gigabit-Ethernet passive optical network (GPON) on a reset signal. A quick signal indication response is realized by an OLT optical module; and meanwhile, simple and mature electric appliances are used, so that the product cost and the circuit complexity are reduced, and the system reliability is improved.

Description

technical field [0001] The present invention relates to the field of optical communication technology, in particular to a method for enabling an OLT (Optical Line Terminal) in a GPON (Gigabit-Capable Passive Optical Network) to quickly generate SD (Signal Detector) that meets requirements. Signal indication) signal device. technical background [0002] GPON is the latest generation broadband passive optical network access standard based on the ITU-T G.984.x standard. It has many advantages such as high bandwidth, high efficiency, large coverage, and rich user interfaces. It is considered by most operators to achieve An ideal technology for wideband and comprehensive transformation of access network services. GPON is a point-to-multipoint system. One OLT is connected to multiple ONUs (Optical Network Unit) through tree-shaped optical fiber links. GPON business is asynchronous, the downlink is defined as 2.488Gbits / s, and the uplink is defined as 1.244Gbits / s. In the upstre...

Claims

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Application Information

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IPC IPC(8): H04B10/14H04Q11/00H04B10/077
Inventor 宋岩王婧齐彦龙
Owner SUPERXON (CHENGDU) TECH LTD
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