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Optical module

An optical module and control module technology, applied in the field of optical communication, can solve the problem that TIA cannot have both the reset function and the bandwidth switching function at the same time.

Active Publication Date: 2019-03-19
HISENSE BROADBAND MULTIMEDIA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method to solve the problem that the TIA in the prior art optical module cannot have the reset function and the bandwidth switching function at the same time

Method used

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Embodiment Construction

[0038] In the embodiment of the present invention, the TIA is internally designed with a Reset reset circuit, which helps the TIA quickly recover to the common-mode voltage state through the reset circuit; after the MAC chip receives the optical signal sent by the optical network unit, it generates a state reset when restoring the preamble of the optical signal signal, the reset signal needs to be sent to the TIA via a dedicated PIN on the receiver. In addition, since XGS-PON supports mixed services of 10G and 2.5G, TIA needs to use different bandwidths when processing 10G services and 2.5G services; after the MAC chip receives the optical signal sent by the optical network unit, it The rate of the signal generates the bandwidth switching signal and needs to send the bandwidth switching signal to the TIA through a dedicated PIN of the receiver. Since the existing receivers are all 5PIN designs, after introducing the bandwidth switching function and reset function, it is necess...

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Abstract

The invention relates to the technical field of optical communication and particularly relates to an optional module. The optical module is used for solving the problem that a Trans-Impedance Amplifier (TIA) in the optical module cannot simultaneously have a reset function and a bandwidth switching function in the prior art. The optical module provided by the embodiment of the invention comprisesa control module, a state selection module and a TIA; the control module is used for generating, after receiving an optical signal sent by an optical network unit, a control signal for controlling a state of the TIA, and controlling a state of the state selection module via the generated control signal; the state selection module is used for generating, under the action of the control signal, a state selection signal corresponding to a type of the control signal, and outputting the generated state selection signal to the TIA; and the TIA is used for executing, according to the state selectionsignal output by the state selection module, an operation corresponding to the state selection signal.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an optical module. Background technique [0002] With the growth of people's demand for communication, fiber access (Fiber To The x, FTTx) has been developed rapidly. The optical fiber access technology based on the passive optical network (Passive Optical Network, PON) technology has been widely used in the world. [0003] The receiving unit of the optical module is compatible with receiving optical signals with a bit rate of 10Gbps and 2.5Gbps uplink. In order to ensure normal reception of optical signals, the receiving unit is equipped with a TIA (trans-impedance amplifier) ​​that supports 10G bandwidth in the prior art. TIA is used to recover the optical signal. According to the requirements of the XGS-PON standard protocol, the length of the preamble cannot exceed 128ns, and the recovery time of the 10G TIA itself cannot meet the requirements of the protocol....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/67
CPCH04B10/67H04B10/671
Inventor 路磊
Owner HISENSE BROADBAND MULTIMEDIA TECH
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