DSFPDD-MPM Transceiver Segments PON Channels
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Solution Overview
Problem
Current Multiple-PON-Modules (MPM) optical transceivers for GPON and XGS-PON support only one PON coexistence connection, limiting the number of users and density of connections.
Innovation Solution
The development of a Dual Small Form-factor Pluggable Double-Density Multiple Passive Optical Network Module (DSFPDD-MPM) that allows for connections to two optical fiber connectors, enabling simultaneous operation as a dual GPON and XGS-PON transmitter and receiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single SFP+ transceiver is used with a bidirectional SC connector, then the device complexity is reduced and ease of operation is improved, but the connection density and number of PON channels are limited to one
Solution Approach 1:
The single SFP+ transceiver is segmented into two independent SFP transceivers (first SFP for GPON, second SFP for XGS-PON), each with its own optical sub-assembly and connector. This segmentation allows simultaneous support for multiple PON channels while keeping each individual transceiver module relatively simple and manageable.
Solution Approach 2:
Two SFP transceivers are nested within a single SFP+ transceiver housing structure. The first SFP and second SFP are positioned side-by-side within the host, sharing common structural elements and control circuitry while maintaining independent optical paths and connectors, effectively doubling the channel capacity without proportionally increasing external footprint.
2Productivity
If multiple SFP transceivers are integrated into a single SFP+ host, then the connection density is doubled to support 2x GPON and 2x XGS-PON channels, but the device complexity increases
Solution Approach 1:
Two separate SFP transceiver modules are merged into a single integrated SFP+ host structure. The first SFP optical sub-assembly and second SFP optical sub-assembly share common structural housing, mounting mechanisms, and control circuitry, while maintaining separate optical paths and connectors. This merging doubles the connection density within the same physical footprint.
Solution Approach 2:
The SFP+ transceiver host is designed with universal functionality to accommodate both GPON and XGS-PON protocols simultaneously through its two integrated SFP transceivers. The control unit can independently manage different PON technologies, making the single module capable of handling multiple network functions and protocol types.
3Quantity of substance
If a bidirectional SC connector configuration is used, then the ease of operation is improved and device complexity is reduced, but the user capacity and density are limited
Solution Approach 1:
The single bidirectional SC connector is segmented into two separate SC connectors (first SC connector for GPON, second SC connector for XGS-PON). Each connector is dedicated to a specific PON technology and operates independently, allowing simultaneous connection to multiple users and networks without interference or configuration conflicts.
Data Source
AI summary
The present invention relates to a Dual Small Form-Factor Pluggable Double Density Multiple Passive Optical Network Module, projected to provide a connection for XGS-PON and GPON, and to be incorporated in any state-of-the-art SFP-DD transceiver host to allow double multi-PON OLT channels. The module comprises a case housing a specific set of technical elements such as two multiple PON-bidirectional optical subassemblies, forty pins high-speed electrical interface, and all the necessary electronic circuits, printed circuit board and flex-printed circuit board to ensure proper assembly and electronic performance of all elements.