TY - JOUR A1 - Apelsmeier, Andreas A1 - Schmauss, Bernhard A1 - Shamonin (Chamonine), Mikhail T1 - Compensation of parasitic losses in an extrinsic fiber-optic temperature sensor based on intensity measurement JF - Sensors and Actuators A: Physical N2 - A method of referencing in an extrinsic optical fiber sensor system utilizing temperature dependence of the absorption edge in a semiconductor crystal (semi-insulating iron-doped indium phosphide) is demonstrated. The intensity reference is provided by controlling the temperature of an LED source and transmission measurements with different emission spectra. A transient operation regime is introduced. The entire process is controlled by a microprocessor unit. The performance of the sensor system is investigated and it is shown that the connector losses may be compensated for. Contrary to the published works performed with GaAs crystals it was not observed that the absorption coefficient of the semiconductor follows the law for idealized direct-gap semiconductor but can be described by the so-called Urbach tail. Since the proposed sensor system comprises a single LED source, simple electronics and no optical fiber couplers it is promising for realization of low-cost fiber-optic temperature sensors, e.g. for power transformer monitoring or magnetic resonance imaging applications. KW - Extrinsic optical fiber sensor KW - Temperature measurement KW - Intensity measurement KW - Intensity referencing KW - Indium phosphide KW - Transient operation Y1 - 2012 U6 - https://doi.org/10.1016/j.sna.2011.10.015 VL - 173 IS - 1 SP - 49 EP - 54 ER - TY - JOUR A1 - Trautner, Ralph A1 - Schmauss, Bernhard A1 - Shamonin (Chamonine), Mikhail T1 - Herstellung und Charakterisierung eines extrinsischen faseroptischen Elementarsensors zur Temperaturmessung JF - tm - Technisches Messen N2 - Es werden Herstellung und Charakterisierung eines faseroptischen Elementarsensors zur Temperaturmessung vorgestellt. Der Sensorkopf in Form eines Prismas aus Indiumphosphid nutzt die Temperaturabhängigkeit der Absorptionskante des Halbleitermaterials. Aufgrund der Abmessungen des Prismas im Grenzbereich von Feinmechanik zu Mikrosystemtechnik ist ein angepasstes Herstellungsverfahren notwendig. T2 - Manufacture and Characterization of an Extrinsic Elementary Fiber-Optical Sensor for Temperature Measurement KW - Extrinsic fiber optic sensor KW - indiumphosphide KW - temperature measurement KW - manufacturing method KW - characterization Y1 - 2008 U6 - https://doi.org/10.1524/teme.2008.0866 VL - 75 IS - 10 PB - De Gruyter ER -