Reflective Terminators for Unmated Optical Network Testing
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Solution Overview
Problem
Service providers face challenges in monitoring and testing optical networks without a mated connector and receptacle, as existing reflective devices are only operational when a dust cap is installed, rendering them useless in mated conditions.
Innovation Solution
A reflective terminator device with a ferrule assembly and optical filter, integrated into a connector housing, allows for the reflection of preselected wavelengths, enabling network testing without a mated connection, and features a locking mechanism and sealing elements for secure and environmental protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dust cap with a reflector is used to monitor the optical network, then the optical link can be monitored when the dust cap is installed, but the reflective device becomes useless when the dust cap is removed from the connector
Solution Approach 1:
The reflective device is extracted from the dust cap and integrated into a separate connector housing assembly. This allows the reflective device to remain functional independently of the dust cap's presence, enabling monitoring in both installed and removed states.
Solution Approach 2:
The connector housing assembly is designed to perform multiple functions: it provides environmental protection, enables optical connection, and maintains reflective monitoring capability regardless of dust cap status. The locking feature and sealing elements ensure these functions work together universally.
2Reliability
If a reflective device is disposed in-line of a mated optical connection, then reflective events can be created in the optical network, but the connection requires a mated connector and receptacle condition
Solution Approach 1:
The connector housing assembly with integrated ferrule assembly serves itself by providing the reflective function without requiring a mated connection. The optical filter and ferrule assembly work together to create reflective events independently, eliminating the need for partner components.
3Object-affected harmful factors
If traditional connectors are used for outdoor applications, then environmental protection is provided, but the connectors require mated connections for testing which increases complexity
Solution Approach 1:
The testing capability is extracted from the mated connection requirement and embedded within the single connector housing assembly. The locking feature secures the assembly while the optical filter enables testing without requiring a partner connector, simplifying the overall system.
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 efficient and cost-effective testing of optical networks by allowing reflective events at connection nodes without a mated connection, facilitating quick visual inspection and reducing the need for on-site technician visits.
Implementation Method 1
an optical filter for reflecting one or more preselected wavelengths
Data Source
AI summary
Optical terminators comprising a ferrule assembly with an optical filter for providing a reflective event in an optical network are disclosed. The optical filter assembly reflecting one or more preselected wavelengths so that the service provide can test optical links in an unmated connection node of the optical network. In one embodiment, the optical terminator has a hardened connector interface for outside plant applications. A ferrule assembly comprises the optical filter, and at least a portion of the ferrule assembly is disposed within the connector housing of the optical terminator. In another embodiment the connector housing comprises a locking feature integrally formed into the body of the connector housing for securing the reflective terminator. Other embodiments comprise a sealing element for sealing a rear end of the reflective terminator, a plug end of an outer housing having first and second fingers, and a coupling nut disposed about a portion of the outer housing. The optical terminator advantageously allows the network operator to test and determine the operation of a branch of the optical network without having to send a technician to physically visit and test the operation of the desired link in the optical network.