New Product Release Next-Generation Fiber Optic Ultrasonic Sensor

Product Overview

Our latest fiber optic ultrasonic sensor is a cutting-edge innovation that integrates a Fabry-Pérot (F-P) resonant cavity with a vibration-sensitive diaphragm. Engineered to detect ultrasonic signals (defined as sound waves with frequencies of 20 kHz or higher), this sensor sets new standards in precision and reliability for capturing partial discharge events.

Background

Faults in power equipment are a leading cause of power grid outages, with many stemming from insulation failures due to partial discharge (PD). PD, triggered by insulation degradation during equipment operation, can significantly shorten equipment lifespan and pose potential safety risks. Therefore, continuous monitoring of PD activity is essential for ensuring the safety and longevity of power equipment. Common detection methods include pulse current, gas chromatography, infrared spectroscopy, and ultrasonic sensing. The ultrasonic sensing method has great advantages in noise resistance capabilities.

Innovative Detection Principle

Our new fiber optic ultrasonic sensor leverages changes in reflected light intensity to interpret ultrasonic signals. Its advanced probe design features an F-P cavity formed by the adjacent fiber face and diaphragm surface. When ultrasonic waves from PD events reach the diaphragm, they cause it to vibrate, altering the cavity length d, which in turn changes the reflected light intensity. By decoding these changes, the sensor accurately captures ultrasonic data, enabling reliable PD detection.

Traditional Fiber Optic Ultrasonic Sensor Challenges

Traditional sensors typically rely on adhesive bonding of the diaphragm and sleeve, a straightforward yet time-sensitive method that risks detachment. Additionally, the lack of fiber collimation limits detection range, hindering broader application possibilities.

Advantages of the New Fiber Optic Ultrasonic Sensor

Our advanced sensor addresses these challenges by using a specialized bonding method for secure diaphragm attachment, ensuring durability over time. To extend detection range, a collimator structure is integrated into the design, effectively boosting incident light intensity and reducing scattering. Rigorous testing demonstrates that our new sensor achieves a detection range of up to 1.0 meters, a significant enhancement over previous designs.

Specifications

Applications

• Metal Tip Discharge Monitoring

• Floating Potential Body Discharge Monitoring

• Surface Discharge Monitoring

• Free Metal Particle Discharge Monitoring

• Internal Gas Discharge Monitoring in Gas Insulated Switch

Features

• Passive and Electromagnetic Interference Resistant

• Compact Size

• Wide Frequency Response Range

• Long Measurement Distance

About T&S

T&S is a global leader in high-density fiber optic interconnection manufacturing, providing the industry’s most adaptable and innovative fiber optic components and solutions to meet the ever-growing demands for advanced connectivity in a digital-first world.

Known for our consistent focus on innovation and excellence in OEM/ODM services, we specialize in producing a comprehensive range of high-quality fiber optic components, spanning both passive and active categories. Our tailored solutions serve diverse sectors, including telecom, 5G, and data centers, and drive forward advancements in FBG sensor technology. As a publicly listed company, T&S continues to set new standards in fiber optic interconnection on a global scale.