›› 2014, Vol. 23 ›› Issue (9): 94213-094213.doi: 10.1088/1674-1056/23/9/094213

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Radiation-induced attenuation self-compensating effect in super-fluorescent fiber source

杨远洪a b, 索鑫鑫a, 杨巍b   

  1. a Key Laboratory on Precision Opto-mechatronics Technology of Ministry of Education, Beihang University, Beijing 100191, China;
    b National Key Laboratory on Inertial Technology, Beihang University, Beijing 100191, China
  • 收稿日期:2014-03-13 修回日期:2014-06-16 出版日期:2014-09-15 发布日期:2014-09-15
  • 基金资助:
    Project supported by the Special Fund for Development of National Major Scientific Instruments of China (Grant No. 2013YQ04081504) and the Program for Innovative Research Team in University, China (Grant No. IRT 1203).

Radiation-induced attenuation self-compensating effect in super-fluorescent fiber source

Yang Yuan-Hong (杨远洪)a b, Suo Xin-Xin (索鑫鑫)a, Yang Wei (杨巍)b   

  1. a Key Laboratory on Precision Opto-mechatronics Technology of Ministry of Education, Beihang University, Beijing 100191, China;
    b National Key Laboratory on Inertial Technology, Beihang University, Beijing 100191, China
  • Received:2014-03-13 Revised:2014-06-16 Online:2014-09-15 Published:2014-09-15
  • Contact: Yang Yuan-Hong E-mail:yhyang@buaa.edu.cn
  • Supported by:
    Project supported by the Special Fund for Development of National Major Scientific Instruments of China (Grant No. 2013YQ04081504) and the Program for Innovative Research Team in University, China (Grant No. IRT 1203).

摘要: The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced attenuation (RIA) self-compensating effect in SFS based on photo-bleaching was found and the general mathematic model of SFS output spectra variations was made. The radiation-induced background attenuation (RIBA) at the pump wavelength was identified to be the main cause of the total output power and spectra variations and the variations can then be compensated by active control of the pump power to enhance the self-compensating effect. With closed-loop feedback control of pump current, double-pass backward (DPB) configuration and spectrum re-shaping technology, an SFS prototype was made and tested. The mean-wavelength stability of about 87.4 ppm and output power instability of less than 5% were achieved under up to 200 krad (Si) gamma-ray irradiation.

关键词: super-fluorescent fiber source, Er-doped fiber, radiation-induced attenuation, mean wavelength stability

Abstract: The compact super-fluorescent fiber source (SFS) output spectra variations at different pump currents and under different dose of gamma-ray radiation were measured and compared respectively. The radiation-induced attenuation (RIA) self-compensating effect in SFS based on photo-bleaching was found and the general mathematic model of SFS output spectra variations was made. The radiation-induced background attenuation (RIBA) at the pump wavelength was identified to be the main cause of the total output power and spectra variations and the variations can then be compensated by active control of the pump power to enhance the self-compensating effect. With closed-loop feedback control of pump current, double-pass backward (DPB) configuration and spectrum re-shaping technology, an SFS prototype was made and tested. The mean-wavelength stability of about 87.4 ppm and output power instability of less than 5% were achieved under up to 200 krad (Si) gamma-ray irradiation.

Key words: super-fluorescent fiber source, Er-doped fiber, radiation-induced attenuation, mean wavelength stability

中图分类号:  (Environmental and radiation effects on optical elements, devices, and systems)

  • 42.88.+h
42.81.Wg (Other fiber-optical devices) 42.81.Pa (Sensors, gyros)