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Optical fiber links in nuclear physics experiments

This paper presents comparative analysis of electronics and different types of optical links for transmissions of results of measurements from a `hot' zone. This problem is important in high energy physics experiments with accelerators and in experiments with nuclear reactors. It is generally preferable to use an optical fiber link before the electronic link. We compare parameters of optical links with light emission diode and with semiconductor laser, with external and with internal modulation, for analogical and for digital signals. The specified demands are conditioned by bandwidth more than 108 Hz and distance less than 102 m. The design and results of measurements of the technical parameters of the optical links with light emission diode and with low-threshold semiconductor Ga-As microlaser are shown. The program of the radiation resistance testing of this equipment in framework of the `ENTOREL' project is also discussed.