http://www.cnr.it/ontology/cnr/individuo/prodotto/ID57325
Temperature sensing in E.M.D. environment with periodically poled lithium niobate devices (Articolo in rivista)
- Type
- Label
- Temperature sensing in E.M.D. environment with periodically poled lithium niobate devices (Articolo in rivista) (literal)
- Anno
- 2006-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1117/12.664468 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- G. Margheri ; T. Del Rosso ; S. Trigari ; S Sottini ; D. Grando ; A. D'Orazio ; M. De Sario ; V. Petruzzelli ; F. Prudenzano (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- ISC-CNR, via Madonna del Piano, 50019 ,Sesto Fiorentino, Italy;
ISC-CNR, via Madonna del Piano, 50019 ,Sesto Fiorentino, Italy alla data di realizzazione del prodotto;
ISC-CNR, via Madonna del Piano, 50019 ,Sesto Fiorentino, Italy;
ISC-CNR, via Madonna del Piano, 50019 ,Sesto Fiorentino, Italy;
Università di Pavia, Via Ferrata 1, I-27100 Pavia, Italy;
Politecnico di Bari, DEE, Via E. Orabona, 4 - 70125 Bari, Italy;
Politecnico di Bari, DEE, Via E. Orabona, 4 - 70125 Bari, Italy;
Politecnico di Bari, DEE, Via E. Orabona, 4 - 70125 Bari, Italy;
Politecnico di Bari, DIASS Via E. Orabona, 4 - 70125 Bari, Italy (literal)
- Titolo
- Temperature sensing in E.M.D. environment with periodically poled lithium niobate devices (literal)
- Abstract
- A temperature sensor immune to electromagnetic noise is designed and fabricated. The sensor key element is a
periodically poled lithium niobate (PPLN) substrate. PPLN allows a direct and efficient frequency conversion of
lightwave through the quasi-phase matching (QPM) of the pump radiation propagating at the fundamental and second
harmonic wavelengths. For these devices, the efficiency of second harmonic generation (SHG) depends on the QPM
condition, and it strongly changes with respect to the wavelength and the temperature. The effect of temperature
variation on the SHG in periodically poled lithium niobate annealed proton exchange (APE) channel waveguides (WG)
is theoretically modeled via a home-made computer code and experimentally validated via a suitable measurement setup.
A lot of simulations have been performed to test the temperature sensor feasibility and to identify its optimal
configuration. Another sensor configuration made by two waveguides with suitable gratings of inverted ferroelectric
domains is designed and refined, too. For an optimised PPLN-WG device, which could be fabricated through electric
field poling and annealed proton exchange or titanium diffusion, a sensitivity S ? 0.03?W/°C for the temperature range
equal to 100 °C is demonstrated by using an input power at a fundamental wavelength equal to 40 mW. Similar
evaluations and measurements, performed on bulk substrates, allowed us to design a layout of a sensor particularly
suited for rugged in-field applications. (literal)
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