Dual-Protocol PON Optical Module With Shared Fiber Path
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Solution Overview
Problem
Existing optical transmission sub-modules are limited to a single communication protocol, necessitating separate setups for old and new network systems during upgrades, leading to the need for re-layout of fiber transmission lines and replacement of data modems.
Innovation Solution
A passive optical network dual-system focusing device incorporating an optical guiding unit, path conversion unit, and receiving/transmitting unit with multiple filters and lenses, allowing simultaneous support for two communication protocols within a compact space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single optical transmission sub-module is used, then the device complexity is reduced, but the adaptability to support multiple communication protocols deteriorates
Solution Approach 1:
The optical transmission sub-module is designed to support multiple communication protocols (EPON and GPON) simultaneously through a unified structure. The module includes receiving units for both EPON and GPON protocols, along with wavelength division multiplexing components that enable single-fiber dual-protocol operation, making the device universal across different protocol standards
Solution Approach 2:
The patent implements a nested structure where EPON and GPON receiving units are integrated within a single optical transmission sub-module. The wavelength division multiplexing filter nests multiple wavelength channels within the same optical path, allowing compact coexistence of different protocol handlers
2Reliability
If separate setups for old and new network systems are used, then the reliability of each system is maintained, but the device complexity and space requirements increase
Solution Approach 1:
The patent merges EPON and GPON system functionalities into a single integrated optical transmission sub-module. The combining of wavelength division multiplexing filters, multiple receiving units, and transmitting units into one module maintains protocol reliability while reducing overall device complexity and eliminating the need for separate hardware setups
Solution Approach 2:
The unified optical transmission sub-module serves both legacy EPON and newer GPON systems through multi-functional components, including dual receiving units and wavelength division multiplexing capabilities, ensuring reliable operation of both protocols within a single device
3Reliability
If separate fiber transmission lines are laid for different systems, then the signal quality is maintained, but the implementation cost and complexity increase
Solution Approach 1:
The patent introduces wavelength division multiplexing filters as intermediary components that enable multiple signal channels to share a single fiber transmission line. The filters separate and combine different wavelengths, acting as mediators that maintain signal quality for both EPON and GPON protocols while using shared physical infrastructure
Solution Approach 2:
The optical transmission sub-module provides universal support for multiple protocols over a single fiber, eliminating the need for separate fiber deployments. The module's multi-functional design allows it to handle different wavelength channels and protocols simultaneously on the same physical medium
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables simultaneous operation of two communication systems without requiring hardware replacement, reducing costs and space requirements while maintaining signal quality and facilitating precise network monitoring.
Implementation Method 1
The optical path conversion unit sequentially includes a first filter, a second filter, a focusing adjusting lens, and a third filter along the direction towards the optical guiding unit
Implementation Method 2
the optical path conversion unit sequentially includes a first filter, a second filter, a focusing adjusting lens, and a third filter
Data Source
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AI summary
The present invention relates to a passive optical network dual-system focusing device, which comprises an optical guiding unit, an optical path conversion unit, and an optical receiving and transmitting unit. The optical guiding unit is connected to an optical fiber and is adapted to transmit optical signals. The optical path conversion unit is connected to the optical guiding unit, is adapted to receive optical signals, and changes the optical path of the optical signals. The device is configured with two receiving units and two transmitting units in the optical receiving and transmitting unit, and can simultaneously support the use of two communication protocol systems on the same optical path.