Modular DWDM Fiber Optic Assembly for High-Density Channel Routing
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Solution Overview
Problem
The deployment of dense wavelength division multiplexing (DWDM) in fiber optic networks leads to challenges in space density, channelization efficiency, and cross-connection methodology due to the increased number of optical filters required, consuming additional space in fiber optic assemblies.
Innovation Solution
A fiber optic assembly design featuring a body and a detachable cover, each defining a fiber optic component routing plane, with integrated optical filters and ports, allowing for modular assembly and increased space efficiency by maximizing the number of fiber optic components per unit area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of optical filters is increased to support more DWDM channels, then channelization efficiency is improved, but space density deteriorates due to additional space consumption in fiber optic assemblies
Solution Approach 1:
The patent transitions from a planar arrangement of optical filters to a three-dimensional stacked configuration. Multiple layers of filters are vertically stacked within the same footprint, effectively utilizing the z-dimension to increase channel capacity without expanding the horizontal area occupied by the fiber optic assembly.
Solution Approach 2:
The patent implements a nested structure where multiple optical filter layers are stacked one inside another within a single fiber optic assembly housing. Each layer contains filters for different wavelength channels, and the layers are vertically arranged to maximize space utilization while maintaining optical performance.
2Productivity
If the number of optical filters is increased to support more DWDM channels, then channelization efficiency is improved, but device complexity increases due to more filters in the assembly
Solution Approach 1:
The patent divides the DWDM system into modular stacked layers, where each layer contains a subset of optical filters for specific wavelength channels. This segmentation allows independent assembly, testing, and replacement of individual layers, reducing overall system complexity while maintaining high channelization efficiency.
Solution Approach 2:
The stacked filter assembly design creates a universal platform where the same basic structural framework can accommodate different numbers and types of optical filters by simply adding or removing layers. This multi-functional design reduces complexity by using standardized components and assembly procedures across different channel configurations.
3Area of stationary object
If more fiber optic components are integrated per unit area to improve space utilization, then space density is improved, but ease of manufacture deteriorates due to increased manufacturing complexity
Solution Approach 1:
The patent segments the fiber optic assembly into standardized stacked modules that can be manufactured independently and then assembled. Each module contains a specific number of optical filters and associated components arranged in a repeatable pattern, simplifying the manufacturing process while achieving high space utilization through vertical stacking.
Solution Approach 2:
The patent employs preliminary assembly of individual filter layers and sub-assemblies before final integration into the complete fiber optic assembly. This allows complex components to be pre-manufactured and tested separately, reducing the complexity of final assembly while maintaining high density through efficient stacking arrangements.
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
The design enhances space utilization and manufacturing flexibility, supporting high-density fiber optic connections and DWDM channels within a compact footprint, reducing manufacturing complexity and costs while maintaining easy access for repairs.
Implementation Method 1
Wavelength division multiplexing (WDM) multiplexes a number of optical carrier signals onto a single optical fiber by using different wavelengths of light
Implementation Method 2
WDM modules may utilize a plurality of optical filters, e.g. bandpass filters and channel filters, to isolate wavelengths for each channel
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
The present disclosure relates to a fiber optic assembly that includes a body and a lid coupled to the body where the body and the lid each define a respective fiber routing plane. The fiber optic assembly also includes a plurality of ports on the body and a plurality of ports on the lid such that when the lid and the body are in a closed configuration, the ports of the body and the ports of the lid define a singular connection plane.