Wavelength Tunable DFOS for Physical Layer Security
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Solution Overview
Problem
Distributed fiber optic sensing data in optical telecommunications networks is vulnerable to physical layer attacks, jamming, and eavesdropping due to lack of secure sensing information extraction mechanisms.
Innovation Solution
The implementation of a filtering-based security system using a tunable mechanism within an interrogator to extract sensing information from each optical networking unit (ONU) in a distributed fiber optic sensing (DFOS) system, employing wavelength tunable technologies and optical filters to ensure secure data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If distributed fiber optic sensing is implemented on optical telecommunications networks, then sensing functions are provided, but security vulnerabilities to physical layer attacks, jamming, and eavesdropping arise
Solution Approach 1:
The patent segments the sensing data extraction process by implementing individual tunable filters for each optical networking unit (ONU). Each ONU's sensing information is extracted through its dedicated filter, creating isolated sensing channels that prevent eavesdropping and jamming between different units. This segmentation approach maintains sensing functionality while enhancing security against physical layer attacks.
Solution Approach 2:
The patent applies local quality by assigning specific wavelength tuning ranges and filter characteristics to each ONU based on its location and requirements. Each ONU operates with customized spectral parameters, creating localized sensing zones that are secure from external interference. This approach enables secure distributed sensing while maintaining adaptability across the network.
2Reliability
If sensing information is extracted from each optical networking unit individually, then physical layer security is enhanced, but device complexity increases
Solution Approach 1:
The patent employs dynamic wavelength tuning mechanisms that allow the interrogator to adaptively adjust filter wavelengths and bandwidths based on real-time network conditions and ONU requirements. This dynamic approach enables secure individualized sensing extraction without requiring static complex hardware configurations for each ONU, thereby managing device complexity while maintaining security.
Solution Approach 2:
The patent implements a universal interrogator architecture that integrates multiple tuningable filter channels and wavelength division multiplexing capabilities into a single device. This multi-functional interrogator can simultaneously extract sensing information from multiple ONUs using different wavelength bands, reducing overall system complexity compared to having separate interrogators for each ONU while maintaining individualized security for each unit.
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
This approach provides enhanced physical layer security by ensuring that sensing information is specific to individual ONUs, making it difficult for attackers to intercept or jam, thereby securing both telecommunications and sensing data simultaneously.
Implementation Method 1
employing wavelength tunable technologies and optical filters to ensure secure data transmission
Data Source
AI summary
Aspects of the present disclosure describe physical layer security in optical telecommunications networks wherein a filtering-based physical security is provided by a wavelength tunable distributed fiber optical sensing (DFOS) system operating simultaneously on the telecommunications network.