Update on irradiation effects in optical fibers and optoelectronic ... - IFA

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Association EURATOM MEdC Neutron irradiation: The neutron irradiation was done at the Department of Applied Nuclear Physics facility of the “Horia Hulubei” National Institute for Physics and Nuclear Engineering. - Based on the reaction Be + d n + X, using a deuteron beam (13 MeV) and a thick beryllium target of 165 mg.cm^-2; - The samples are located downstream at the distances from 10 to 40 cm from the Be target; - The neutrons mean energy was about 5.2 MeV. The neutrons flux above 1 MeV is estimated with a relative error of about 20 %; - The maximum neutron flux achievable in our setup at a distance of 10 cm from the target was 2.109 n.cm^-2.s-1.μA^-1, corresponding to a deuteron beam intensity of 10 μA; - The maximum value for the fluence reached was 1.18 x 10^13 n.cm^-2 (on-line); 3.152 x 10^13 n.cm^-2 (off-line). Days of Association EURATOM/MEdC, October 10-11, 2006, Cluj-Napoca
Association EURATOM MEdC A. Investigations on the gamma-ray and electron beam radiation effects on semiconductor optical detectors for sensing and optical communication applications The characteristics of the investigated photodiodes Photodiode designation/ Characteristics Ph 1 (2) Ph 3 (4) Ph 5 (6) Material Si Si InGaAs Sensing area (mm) □ = 3 x 3 Φ = 0.991 Φ = 0.3 Capacitance (pF) - 5.2 (V R = 3.3 V) 5 Max. reverse voltage (V) 30 20 15 Max. reverse current (mA) - - 5 Max. Forward current (mA) - - 25 Responsivity (A/W) 30 nA/lx 0.5 0.9 (1310 nm) 0,95 (1550 nm) Dark current (nA) 50 0.3 6 NEP (W/Hz 1/2 ) - - 6.28 x 10 -15 Rise/ fall time (ns) 100 ms 1200 1.5 Days of Association EURATOM/MEdC, October 10-11, 2006, Cluj-Napoca
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