Evaluation of gamma response ability of single-mode and multi-mode optical fibers with different dopants as dosimeter sensors

Appl Radiat Isot. 2022 Mar 18;184:110206. doi: 10.1016/j.apradiso.2022.110206. Online ahead of print.ABSTRACTOptical 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.PMID:35325649 | DOI:10.1016/j.apradiso.2022.110206
Source: Applied Radiation and Isotopes - Category: Radiology Authors: Source Type: research