Radiation Application Department, Shahid Beheshti University, Tehran, Iran.
Radiation Application Department, Shahid Beheshti University, Tehran, Iran.
Appl Radiat Isot. 2022 Jun;184:110206. doi: 10.1016/j.apradiso.2022.110206. Epub 2022 Mar 18.
Optical fiber is used as a tool for data transmission in radiation environments in many applications such as medical, plasma diagnostics, and space satellites. The optical transmission is affected by ionizing radiation, characterized by radiation-induced attenuation. This feature allows use as a dosimeter sensor. In this work, the gamma radiation responses of three types of single-mode and multi-mode fibers, with different dopants of erbium (Er), germanium (Ge), and phosphorus (P) were evaluated. Radiation-induced attenuation was measured by spectrophotometer in wavelength ranges of 400-700 nm. The Er-doped fiber had higher attenuation of 0.8 dB/m after 560 mGy total dose. There was a reasonable linear relationship between the amount of attenuation and absorbed dose in P-, Ge-, and Er-doped fibers.
光纤在许多应用中被用作辐射环境下的数据传输工具，例如医疗、等离子体诊断和卫星。光传输会受到电离辐射的影响，其特征是辐射引起的衰减。这一特性使其可用作剂量计传感器。在这项工作中，评估了三种类型的单模和多模光纤的伽马辐射响应，这些光纤的掺杂剂分别为铒（Er）、锗（Ge）和磷（P）。通过分光光度计在 400-700nm 的波长范围内测量了辐射引起的衰减。在总剂量为 560mGy 后，掺铒光纤的衰减率达到了 0.8dB/m。在掺 P、Ge 和 Er 光纤中，衰减量与吸收剂量之间存在合理的线性关系。
