Fiber Sensing refers to the use of optical fibers as sensors to measure various physical, chemical, or environmental parameters. Optical fibers, typically made of glass or plastic, are capable of carrying light over long distances with minimal signal loss. When these fibers are engineered or modified for sensing purposes, they can detect changes in specific properties and convert them into measurable signals. Fiber sensing has a wide range of applications across different industries due to its unique advantages, including high sensitivity, immunity to electromagnetic interference, and the ability to operate in harsh or remote environments.
We report the field trial results of monitoring abnormal activities near deployed cable with fiber-optic-sensing technology for cable protection. Detection and position determination of abnormal events and evaluating the threat to the cable is realized.
We demonstrate vibration detection and localization based on extracting optical phase from the DSP elements of a coherent receiver in bidirectional WDM transmission of 200-Gb/s DP-16QAM over 380 km of installed field fiber.
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NEC Laboratories America, Inc. (NEC Labs) is the US-based center for NEC Corporation’s global network of corporate research laboratories. Our diverse research groups collaborate with industry, academia and governments to provide disruptive solutions to complex problems. A leader in the integration of IT and network technologies with more than 100 years of expertise, NEC provides a combination of products and solutions that cross-utilize the company’s experience and global resources to meet the complex and ever-changing needs of its customers.