Radiation sensitivity of passive components of fibre optic data transfer and sensor systems

Henning Henschel; Otmar Koehn; Hans Ulrich Schmidt

doi:10.1117/12.198637

30 December 1994 Radiation sensitivity of passive components of fibre optic data transfer and sensor systems

Henning Henschel, Otmar Koehn, Hans Ulrich Schmidt

Proceedings Volume 2425, Optical Fibre Sensing and Systems in Nuclear Environments; (1994) https://doi.org/10.1117/12.198637
Event: Optical Fibre Sensing and Systems in Nuclear Environments, 1994, Mol, Belgium

Abstract

Test results of residual passive components of fiber optic systems (apart from optical fibers), such as connectors, couplers, wavelength division multiplexers (WDMs), and optical glues are presented. Most of the components were only irradiated at a ⁶⁰Co gamma ray source with a dose rate of about 0.2 Gy/s up to a final dose of 100 (integrated optic devices) or 10⁴ Gy (fiber optic components). Direct connectors can contribute <EQ 0.3 dB to the total loss (10⁴ Gy), compared with 0.3 to 0.6 dB for lens connectors. The measured coupler inherent losses were between about 0.01 dB (fused coupler, high OH multimode stepindex fibers, (lambda) equals 865 nm) and about 50 dB (coupler made of GRIN lenses, (lambda) equals 865 nm). Fused WDMs showed negligible loss increase at the high power outputs and an increase of output power of up to several dB at the isolating output, as well as shifts of the isolating and throughput regions between about 5 and 14 nm (10⁴ Gy). Optical glues of 20 to 40 micrometers thickness showed noticeable loss increase only for wavelengths <EQ 500 nm (10⁴ and 10⁵ Gy).

Citation Download Citation

Henning Henschel, Otmar Koehn, and Hans Ulrich Schmidt "Radiation sensitivity of passive components of fibre optic data transfer and sensor systems", Proc. SPIE 2425, Optical Fibre Sensing and Systems in Nuclear Environments, (30 December 1994); https://doi.org/10.1117/12.198637

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