A TEMPERATURE-SENSITIVE AND PHOTO-SENSITIVE FIBER, A TEMPERATURE-INSENSITIVE AND PHOTO-SENSITIVE FIBER, AND AN FIBER SENSOR USING THE SAME

摘要

There is provided a temperature- sensitive and photosensitive optical fiber comprising a core region and a cladding region. The core region is codoped with a photosensitive dopant and a temperature sensitive dopant. The photosensitive dopant changes a refractive index of the core region by UV laser irradiation, and the temperature- sensitive dopant increases a thermal expansion coefficient of the core region. Further, there is provided a temperature-insensitive and photosensitive optical fiber comprising a core region and a cladding region. The core region is codoped with a photosensitive dopant and a temperature-insensitive dopant. The photosensitive dopant changes a refractive index of the core region by UV laser irradiation, and the temperature-insensitive dopant decreases a thermal expansion coefficient of the core region.