Dose-rate dependencies in gamma-irradiated fiber Bragg grating filters

Wavelength-division multiplexed fiber-optic links could find applications in various radiation environments. The space industry, for example, could benefit from radiation-tolerant high-speed optical links for the next generation of observation satellites. For applications in the nuclear energy industry, the use of passive optical devices also needs to be evaluated at high dose rates and total doses. Our previous results have shown that in-fiber Bragg grating filters are key components in radiation-resistant passive optical links, as they showed a remarkably high radiation-acceptance level in terms of total absorbed dose. The dose-rate dependencies also need to be evaluated. We therefore studied gamma-irradiated fiber Bragg grating filters at several dose rates ranging from 1 to 25 kGy/h. We show, for the first time, that the dose rate does not affect the full-width at half-maximum of the Bragg peak and that the saturating Bragg peak shift remains.

[1]  A. L. Tomashuk,et al.  Performance of Bragg and long-period gratings written in N- and Ge-doped silica fibers under /spl gamma/-radiation , 1997 .

[2]  Alain Delchambre,et al.  Long-term irradiation of fiber Bragg gratings in a low-dose-rate gamma-neutron radiation field , 2002, SPIE Optics + Photonics.

[3]  A. A. Hamza,et al.  Effect of gamma irradiation on the optical properties of fibres , 1986 .

[4]  Paul Borgermans,et al.  Radiation-resistant WDM optical link for thermonuclear fusion reactor instrumentation , 2001 .

[5]  Kyriacos Kalli,et al.  Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing , 2000 .

[6]  M. Douay,et al.  Behavior of Bragg gratings, written in germanosilicate fibers, against /spl gamma/-ray exposure at low dose rate , 1994, IEEE Photonics Technology Letters.

[7]  F. Berghmans,et al.  Behavior of fibre Bragg gratings under high total dose gamma radiation , 1999, 1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471).

[8]  Francis Berghmans,et al.  Fiber Bragg gratings as a candidate technology for satellite optical communication payloads: radiation-induced spectral effects , 2000, SPIE Optics + Photonics.

[9]  Patrice Mégret,et al.  Behavior of fibre Bragg gratings under high total dose gamma radiation , 1999 .

[10]  V. B. Neustruev,et al.  Colour centres in germanosilicate glass and optical fibres , 1994 .

[11]  Alain Delchambre,et al.  Radiation hardness of passive fiber optic components for the future thermonuclear fusion reactor instrumentation links , 2002, SPIE Remote Sensing.

[12]  E. Friebele,et al.  Radiation damage in single-mode optical-fiber waveguides. , 1983, Applied optics.

[13]  David L. Griscom,et al.  Optical Properties and Structure of Defects in Silica Glass , 1991 .

[14]  David L. Griscom,et al.  γ‐ray‐induced optical attenuation in Ge‐doped‐silica fiber image guides , 1995 .

[15]  Francis Berghmans,et al.  Design of a radiation-hard optical fiber Bragg grating temperature sensor , 1999, Remote Sensing.

[16]  Hiroyuki Takahashi,et al.  Bragg peak shifts of fiber Bragg gratings in radiation environment , 2001, SPIE Optics East.

[17]  B. T. Meggitt,et al.  Optical Fiber Sensor Technology , 1999 .

[18]  Development of new nuclear instrumentation based on optical sensing: irradiation effects on fiber Bragg grating sensors , 2000, International Conference on Optical Fibre Sensors.

[19]  Anthony D. Sanchez,et al.  Response of germanium-doped fiber Bragg gratings in radiation environments , 1999, Defense, Security, and Sensing.

[20]  K. Hill,et al.  Photosensitivity in optical fiber waveguides: Application to reflection filter fabrication , 1978 .

[21]  S. Coenen,et al.  SCK/spl middot/CEN gamma irradiation facilities for radiation tolerance assessment , 2002, IEEE Radiation Effects Data Workshop.

[22]  A. Delchambre,et al.  Radiation-tolerant data links for fusion reactors : from serial electrical data link to parallel optical data link , 2001 .

[23]  Kiyoshi Shibanuma,et al.  ITER R&D: Remote Handling Systems: Blanket Remote Handling Systems , 2001 .

[24]  Stéphane Rougeault,et al.  Optical fibre Bragg grating sensors for structure monitoring within th nuclear power plants , 1994, Other Conferences.