Acoustic Sensing in Optical Fibers
Acoustic waves can induce strain in an optical fiber, leading to changes in the properties of the light being transmitted through the fiber. Using specialized equipment, those subtle changes can be detected and processed into meaningful acoustic data. This principle is fundamental in various applications, including sonar systems, where detecting and analyzing acoustic signals is crucial.
Fibercore’s 50 µm single mode fibers are ideal for acoustic sensing applications due to their small size and very high numerical aperture (NA). Here’s why:
BENEFITS OF USING FIBERCORE'S 50µm FIBER
Size and Sensitivity
The smaller footprint of this ultra-thin fiber allows for a greater fiber length within the same volume package compared to larger sizes like 80 µm or 125 µm, enabling the detection of smaller acoustic signals. Increasing this length therefore translates to greater sensitivity. Additionally, the ultra-thin fibers enable the construction of smaller sensors with equal or better sensitivity compared to larger counterparts.
High Numerical Aperture (NA)
High NA of 50 µm fibers provides excellent resistance to bend-induced loss and microbending - two fundamental loss mechanisms in optical fibers. This means the fiber can be wound into small, tight coils without degrading light transmission, which is critical for maintaining performance in compact sensor designs.
Enhanced Reliability
The reduced fiber diameter minimizes bend stress, leading to increased fiber reliability. These fibers can be deployed in tight coils for many years without failure, ensuring long-term performance in demanding applications.
Temperature Performance
A key distinguishing factor of Fibercore’s fibers is their temperature rating. Our standard acrylate version is suitable for use up to 85°C, while our polyimide version can withstand temperatures up to 300°C. This high-temperature capability enables customers to utilize our fibers in a broader range of environments, making them a versatile choice for various applications.
Conclusion
Fibercore’s 50 µm single mode fibers offer unparalleled benefits for acoustic sensing in sonar systems. Their small size, high numerical aperture, and exceptional flexibility make them an ideal choice for increasing sensitivity and reliability in compact sensor designs. Additionally, their robust temperature performance ensures they can be used in a wide range of environmental conditions. Choose Fibercore’s 50 µm fibers for your next acoustic sensing application and experience the difference in performance and reliability.
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Max Jones
Max is part of our USA based sales team. He has worked in the specialty optical fiber industry for 10+ years and is now putting that expertise to work for Fibercore’s customers. With in-depth knowledge of local and world markets, Max has been pivotal in serving diverse industries including aerospace, biomedical, defense, oil & gas, and telecommunications. Max is dedicated to providing the highest level of technical customer service and support and looks forward to discussing your application with you.