Optical Node Switch Anomaly Detection Using Test Beams
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Solution Overview
Problem
Existing technologies are unable to detect abnormalities in optical switches within optical nodes in optical fiber networks, particularly in access networks, which hinders efficient network maintenance and operation.
Innovation Solution
A remote operation system comprising a remote control device and optical nodes with integrated optical monitoring functions, enabling detection of abnormalities by transmitting test beams and determining optical switch connectivity through optical port monitoring units, and establishing alternative routes using a server-managed connection information system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual connection switching is performed at the site, then connection switching can be done, but it requires manual intervention and is time-consuming
Solution Approach 1:
The patent introduces a remote control device as an intermediary that transmits power supply beams and control signals to optical nodes, enabling remote operation without manual intervention at the site. This mediator allows connection switching to be performed remotely, resolving the contradiction between ease of operation and time loss.
Solution Approach 2:
The patent replaces manual mechanical operations with optical fields (power supply beams and control signals). The remote control device uses optical fields to control optical switches in optical nodes, substituting the mechanical manual switching process with an optical-based remote control system.
2Measurement precision
If optical port monitoring function is provided to detect optical signals, then signal passing can be detected, but abnormality of optical switch inside optical node cannot be detected
Solution Approach 1:
The remote control device acts as an external intermediary that transmits test beams through the optical switches to detect abnormalities. Since the optical switches are controlled remotely via optical fields, the remote control device can also send diagnostic test beams to check switch functionality, enabling abnormality detection that the internal optical port monitoring cannot achieve.
Solution Approach 2:
The system performs preliminary actions by transmitting power supply beams and control signals to establish connection states before performing detection. The remote control device first sets the optical switches to specific connection states, then transmits test beams to verify proper operation, allowing proactive abnormality detection before failures occur.
3Reliability
If multiple optical switches are connected and test beams are transmitted to detect abnormalities, then optical switch abnormality can be detected, but the system complexity increases
Solution Approach 1:
The remote control device performs multiple functions: it transmits power supply beams to optical nodes, transmits control signals for connection switching, and transmits test beams for abnormality detection. By consolidating these functions into a single universal device, the patent avoids increasing overall system complexity while achieving reliable optical switch abnormality detection.
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 real-time detection and isolation of abnormal optical switches, allowing for power-efficient network maintenance without manual intervention, and ensuring continuous operation by establishing alternative routes.
Implementation Method 1
transmitting a power supply beam from the remote control device to the optical node
Implementation Method 2
an optical monitoring function unit that detects some beams passing through the optical cross-connect unit
Data Source
AI summary
An object of the present disclosure is to enable detection of an abnormality of an optical switch inside an optical node.According to the present disclosure, the remote control device is connected to an optical fiber network in which a plurality of optical nodes are connected to each other and performs connection switching of the optical fiber network by remote operation using optical switches provided in the optical nodes, in which, in a specific optical node of the plurality of optical nodes, a plurality of optical switches provided in the specific optical node are connected to each other, a test beam is transmitted to one of the plurality of optical switches, and whether or not an abnormality occurs in one of the plurality of optical switches is determined based on whether or not the test beam has been detected in the plurality of optical switches.