Periodically poled lithium niobate LiNbO3 waveguides (PPLN-WGs) are investigated via a home-made computer code to perform efficient frequency conversion of lightwave, through the quasi-phase matching (QPM) of the modes propagating at the fundamental and second harmonic wavelengths. The design goal consists in obtaining a temperature sensors having high immunity to electromagnetic noise. A sophisticated sensor, made by two PPLN-WGs with suitable gratings of inverted ferroelectric domains and employing phase-shifters and mirrors is designed and refined. A sensitivity S ≅ 0.2 mW/°C in the temperature range from 345 °C to 435 °C is simulated by using the input power equal to 2 W at the fundamental wavelength
High Performance Temperature Sensor / Calo', Giovanna; D'Orazio, Antonella; M., De Sario; Petruzzelli, Vincenzo; Prudenzano, Francesco; T., Del Rosso; S., Sottini; S., Trigari; D., Grando. - (2004), pp. 266-268. (Intervento presentato al convegno 2004 URSI EMTS, International Symposium on Electromagnetic Theory tenutosi a Pisa, Italy nel May 23-27, 2004).
High Performance Temperature Sensor
CALO', Giovanna;D'ORAZIO, Antonella;PETRUZZELLI, Vincenzo;PRUDENZANO, Francesco;
2004-01-01
Abstract
Periodically poled lithium niobate LiNbO3 waveguides (PPLN-WGs) are investigated via a home-made computer code to perform efficient frequency conversion of lightwave, through the quasi-phase matching (QPM) of the modes propagating at the fundamental and second harmonic wavelengths. The design goal consists in obtaining a temperature sensors having high immunity to electromagnetic noise. A sophisticated sensor, made by two PPLN-WGs with suitable gratings of inverted ferroelectric domains and employing phase-shifters and mirrors is designed and refined. A sensitivity S ≅ 0.2 mW/°C in the temperature range from 345 °C to 435 °C is simulated by using the input power equal to 2 W at the fundamental wavelengthI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
