@inproceedings{
 title = {Fiber-Optic Microprobe For Interferometric Measurements In Generators},
 type = {inproceedings},
 year = {1988},
 pages = {175-181},
 volume = {867},
 websites = {http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1250595},
 month = {6},
 day = {8},
 id = {5b595dd9-de4b-3c74-8bcf-c96471e6de0a},
 created = {2016-04-12T13:14:34.000Z},
 accessed = {2016-04-12},
 file_attached = {false},
 profile_id = {d636df8b-dbd7-349c-8172-9f253b58c3e8},
 group_id = {1e8503e9-5fe7-398e-b5b0-831268375e5f},
 last_modified = {2017-03-14T11:27:23.071Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {DeMaria1988},
 private_publication = {false},
 abstract = {In the framework of the development of an extrinsic type fiber-optic interferometric sensor, the design and the qualification tests of the sensing microprobe are presented. The microprobe is the end-termination of a fiber-optic instrument devised for the monitoring of the end-turn vibrations of large generators. Since the monitoring must be made in real operating conditions, the microprobe must survive in real harsh environment: 100 C average temperature, very high electromagnetic field (30000 Amp. average current), pure hydrogen at 4 atmosphere pressure, high mechanical noise. The microprobes were developed following two approaches: conventional and stacked micro-optics concept. Several thermal tests showed a better behaviour by the stacked-optic microprobe. During the test, autointerference modulation phenomena appeared on the control beams. A hypothesis of a polyetalon existence inside the microprobe was formulated and its correctness was supported by a computer simulation. Preliminary qualification tests of the whole interferometric instrument, ended by the stacked-optic microprobe, showed an excellent response over the whole thermal operating range.},
 bibtype = {inproceedings},
 author = {De Maria, L and Martinelli, Mario and Pistoni, Natale C. and Barberis, Angelo},
 editor = {Greenwell, Roger A.},
 doi = {10.1117/12.965073},
 booktitle = {Proceedings of SPIE - The International Society for Optical Engineering}
}

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