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Analog two-way transmission optical module

A two-way transmission, optical module technology, applied in the field of optical transmission systems, can solve the problems of inability to meet two-way symmetrical signal transmission applications, unsuitable for high-density access systems, high costs, etc., to reduce costs, reduce volume, and satisfy The effect of flexible configuration

Inactive Publication Date: 2007-07-18
沈红
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Traditional CATV optical transmitters for broadband analog signals are impossible to apply in low-cost access systems due to their high cost; at the same time, the traditional CATV optical transceivers are too bulky and not suitable for high-density access systems; moreover, they cannot meet the requirements of Two-way symmetrical signal transmission application

Method used

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  • Analog two-way transmission optical module
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  • Analog two-way transmission optical module

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Embodiment Construction

[0020] (1) The present invention uses unrefrigerated lasers, which reduces the cost of the system;

[0021] Use FP and DFB lasers without coolers; device side 1 uses 1.5um wavelength to send signals;

[0022] Device side 2 uses 1.3um light to send signals;

[0023] (2) Use the transimpedance analog preamp receiving circuit to obtain high-bandwidth analog transmission bandwidth;

[0024] The TIA in the optical receiving circuit PIN-TIA circuit uses a broadband low-noise transimpedance amplifier;

[0025] (3) The use of miniaturized dual-fiber bidirectional or single-fiber bidirectional optical devices reduces the volume of the optical transmission module;

[0026] LD or PIN in coaxial package reduces the size of the optical module;

[0027] (4) In the analog optical transmission optical module, a pluggable structure is adopted for the first time, which greatly meets the flexible configuration of the analog transmission system application;

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Abstract

This invention relates to a light transmission system especially to the application of an accessed analog signal transmission system, which requires providing 2-way broadband analog signal transmission, and this invention is a 2-way broadband analog signal transmission module of low cost and small volume utilizing a non-refrigeration laser to reduce the cost by using mutual impedance analog pre-amplification receiving circuit to get high bandwidth analog transmission bandwidth and using a small dual-fiber 2-way or single-fiber 2-way light devices to reduce volume of light transmission module, in the analog transmission in optical modules, it firstly applies a plug structure to meet the flexible configuration of the analog transmission system in application.

Description

Technical field: [0001] The invention relates to an optical transmission system, in particular to the application of the analog signal transmission system for access. Background technique: [0002] Due to the need for multi-carrier transmission, access system applications require bidirectional broadband analog signal transmission; [0003] Traditional CATV optical transmitters for broadband analog signals are impossible to apply in low-cost access systems due to their high cost; at the same time, the traditional CATV optical transceivers are too bulky and not suitable for high-density access systems; moreover, they cannot meet the requirements of Two-way symmetrical signal transmission applications. Invention content: [0004] The invention uses unrefrigerated lasers, which reduces the cost of the system; uses the transimpedance analog pre-amplification receiving circuit to obtain high-bandwidth analog transmission bandwidth; uses miniaturized dual-fiber bidirectional or ...

Claims

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Application Information

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IPC IPC(8): H04B10/155H04B10/25H04B10/40
Inventor 沈红
Owner 沈红
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