In-Line PON Adaptor for Multi-Wavelength Service Isolation
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Solution Overview
Problem
Conventional passive optical networks (PONs) face challenges in efficiently delivering multiple services with different optical wavelength bands to end-point locations while preventing signal interference and optical drift, requiring retrofitting of last mile termination units to support various services.
Innovation Solution
In-line adaptors with wireless interfaces are introduced to detect and convert optical signals to suitable non-optical signals, passing through others, and transmit them to last mile termination units via optical and wireless outputs, enabling seamless service delivery and insulation from optical drift without retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If in-line adaptors are introduced to detect and convert optical signals, then service delivery flexibility and insulation from optical drift are improved, but device complexity increases
Solution Approach 1:
An in-line adaptor is introduced as an intermediary device between the optical network terminal and the service interface. The adaptor includes an optical interface to receive optical signals, a converter to transform optical signals to electrical signals, and a service interface to deliver services. This intermediary structure enables flexible service delivery and insulation from optical drift without requiring modifications to existing optical network terminals.
2Adaptability or versatility
If multiple services with different optical wavelength bands are delivered to end-point locations, then service versatility is improved, but signal interference and optical drift occur
Solution Approach 1:
The system segments different services onto different optical wavelength bands (e.g., first service on first wavelength band, second service on second wavelength band). The in-line adaptor is configured to receive optical signals across multiple wavelength bands and deliver different services corresponding to different wavelength bands to the same or different end-point locations. This segmentation enables multiple services to coexist without interference while maintaining service versatility.
3Adaptability or versatility
If last mile termination units are retrofitted to support various services, then service adaptability is improved, but manufacturing cost and complexity increase
Solution Approach 1:
Instead of retrofitting existing optical network terminals to support multiple services, the invention introduces an in-line adaptor as an external intermediary device. The adaptor includes an optical interface to connect to the optical network terminal, a converter to handle signal conversion, and a service interface to provide multiple services. This approach achieves service adaptability without modifying or replacing existing optical network terminals, thereby reducing manufacturing costs and complexity.
Data Source
AI summary
The techniques described within this disclosure are directed to an in-line adaptor or coupling device of a PON that detects incoming optical signals (e.g., of different services) being delivered over the PON on different bands of wavelengths supported by an incoming optical fiber of the PON, converts (if necessary) any optical signals to suitable wavelength signals, and transmits the converted optical signals to a last mile termination unit via suitable output interfaces. At least a portion of the incoming optical signals are not converted by the in-line adaptor, and instead are passed-through the in-line adaptor to the last mile termination unit via an optical output interface. The in-line adaptor further includes one or more wireless interfaces via which information pertaining to the received optical signals and/or other information related to the in-line adaptor is transmitted to one or more recipient devices.