Fiber Optic Sensing Network Patent

Fiber optic sensing network patents cover systems and methods for distributed sensing of temperature, strain, and acoustic signals along optical fibers, enabling real-time monitoring across various en...

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Fiber Optic Sensing Network Patent

Fiber optic sensing network patents cover systems and methods for distributed sensing of temperature, strain, and acoustic signals along optical fibers, enabling real-time monitoring across various environments.Key Patents and TechnologiesGB2621779A describes a fiber optic sensing apparatus where a receive unit collects coherent optical radiation from a sensing fiber, forming first and second optical signals separated by a defined time delay. A photodetector detects the interference between these signals, and a processor demodulates the derivative signal to locate disturbances along the fiber. Optical delays, modulators, and dual-end receive units enhance measurement accuracy and spatial resolution . GB202108396D0 focuses on fiber optic sensing methods and apparatus, including classifications and patent family details, providing foundational intellectual property for optical sensing technologies . Patents assigned to Fiber Sense Limited cover distributed fiber optic sensing across multiple fiber ports and paths. Methods include transmitting optical signal trains through a network, using optical switching arrangements, receiving backscattered signals, and processing data to detect low-frequency disturbances. Applications include marine environments with distributed acoustic sensing (DAS) along submarine cables, enabling spatial and temporal classification of sound-producing targets . U.S. Patent Application 20230344544 details distributed temperature sensing (DTS), distributed strain sensing (DSS), and DAS for wellbore monitoring. Techniques include optical time-domain reflectometry (OTDR) and optical frequency-domain reflectometry (OFDR) to assign measurements along the fiber. Fiber Bragg gratings (FBGs) can be integrated with transducers for pressure, voltage, current, or chemical sensing, reducing downhole electronic complexity by shifting processing to surface interrogator units .ApplicationsIndustrial and Oil & Gas: Real-time monitoring of wellbore temperature, strain, and pressure for production profiling, leak detection, and flow assurance .Marine and Submarine Cables: Distributed acoustic sensing for environmental monitoring and object tracking .Infrastructure and Security: Detection of vibrations, structural strain, or intrusions along pipelines, bridges, or railways.Telecommunications: Integration with optical networks for simultaneous communication and sensing.SummaryFiber optic sensing network patents encompass distributed sensing systems that leverage optical fibers to detect environmental changes with high spatial and temporal resolution. Key innovations include interference-based signal processing, optical delays, multiplexing, and integration with FBGs or transducers. These patents enable applications ranging from wellbore monitoring and marine acoustic sensing to infrastructure security, providing a foundation for both commercial and research developments in fiber optic sensing technology .
Fiber Optic Sensing Network PON

Distributed Sensing Over Optical Fiber Carrying Live, High-speed Data

Aspects of the present disclosure describe optical fiber sensing systems, methods and structures disclosing a distributed fiber sensor network constructed on an existing, live network, data carrying,

GB202108396D0

G01D5/35303 Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing...

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This application is directed to distributed fiber optic sensing particularly across multiple fiber optic ports with multiple corresponding fiber optic paths.

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Patents | Optical Networking | Research | NEC Labs America

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Patents Assigned to Fiber Sense Limited

Abstract: Described herein are methods and systems of distributed acoustic sensing, such as in an urban or metropolitan area involving a dedicated and established fibre optic communications network

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U.S. Patent Application for Fiber Optic Sensing And Communication

Additionally, fiber optic sensing may eliminate downhole electronic complexity by shifting all electrical and electro-optical systems to the surface within the interrogator unit (s).

Distributed fiber sensor network using telecom cables as sensing

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