Compact Fiber Optic Connector Side-Loading Ferrule Assembly
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Solution Overview
Problem
Network operators face challenges in deploying and connecting subscribers to outdoor communication networks like Fiber-to-the-Home (FTTH) or Fiber-to-the-location (FTTx) due to space constraints on poles or in vaults, and existing hardened fiber optic connectors are bulky and unsuitable for compact deployments.
Innovation Solution
The development of compact fiber optic connectors with a ferrule assembly, housing, and cap design that allows side-loading of optical fibers, featuring asymmetric alignment features, tapered surfaces, and locking mechanisms for secure alignment and easy assembly, enabling efficient deployment and connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hardened fiber optic connectors are used, then environmental sealing and outdoor durability are improved, but connector size becomes bulky and space consumption increases
Solution Approach 1:
The connector is divided into separate modular components including a receptacle with mounting bracket, a plug connector, and a sealing mechanism. This segmentation allows each component to be optimized independently for both sealing performance and compact dimensions, resolving the contradiction between environmental protection and size reduction.
Solution Approach 2:
The plug connector is designed to nest within the receptacle when mated, and the sealing mechanism is integrated within the connector housing. This nesting arrangement eliminates the need for separate protective enclosures, achieving environmental sealing with minimal space consumption.
2Volume of moving object
If compact connector design is implemented, then space consumption is reduced, but manufacturing complexity and assembly difficulty increase
Solution Approach 1:
Multiple functions are merged into single components: the mounting bracket is integrated with the receptacle housing, the sealing mechanism is built into the connector body, and alignment features are incorporated directly into the ferrule assembly. This merging reduces part count and simplifies manufacturing despite the compact form factor.
Solution Approach 2:
The connector employs asymmetric alignment features including a keyed interface and offset mounting holes. This asymmetry provides built-in alignment guidance during assembly, reducing the need for complex alignment procedures and tooling while maintaining compact dimensions.
3Productivity
If compact connector design is implemented, then deployment efficiency is improved, but connection reliability and alignment precision may deteriorate
Solution Approach 1:
The connector includes pre-formed alignment features such as precision-machined ferrules with built-in centering grooves and keyed interfaces. These preliminary alignment structures ensure accurate fiber alignment is achieved automatically during quick plug-and-play deployment, maintaining precision without sacrificing speed.
Solution Approach 2:
The design replaces complex mechanical adjustment mechanisms with precision-molded geometric alignment features. The asymmetric keying system and tapered ferrule interfaces provide self-aligning behavior that ensures manufacturing precision is maintained while enabling rapid deployment without manual adjustment.
Data Source
AI summary
Fiber optic connectors (10), cable assemblies (100) and methods for making the same are disclosed. In one embodiment, the fiber optic connector (10) comprises a ferrule assembly (52), a housing (20) and a cap (60). The housing (20) comprises a longitudinal passageway (22) between a rear end (21) and a front end (23), and a ferrule assembly side-loading pocket (40) for receiving the ferrule assembly (52). The ferrule assembly (52) and housing (20) cooperate to inhibit movement of the assembly during manufacturing. Fiber optic connector 10 may include other features as desired such as keying portion (20KP) or at least one locking feature (20L) integrally formed in the housing (20).