山东省海洋原位传感器工程技术协同创新中心

High-Resolution Seawater Salinity Sensor Based on Temperature Self-Compensating Optical Interferometer

  • 发表刊物: IEEE SENSORS JOURNAL
  • 关键字: Seawater salinity sensing, Optical interferometer, Temperature self-compensating, High-resolution
  • 是否译文:
  • 收录刊物: SCI
摘要: A high-resolution seawater salinity sensor, based on a
temperature self-compensating resonator, has been developed, which accommodates simultaneous temperature variations in both the reference and sensing arms. The impact of external temperature fluctuations on the optical components affecting the optical path difference is significantly reduced and a salinity sensitivity of 145 pm/PSU and a salinity resolution of 0.0003 PSU are achieved. The sensor utilizes a structure that converts optical
rays to spatial light, achieving non-contact measurements which is potentially pivotal for various applications in oceanography and marine studies.