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I lantanidi in Elettronica

Prof. Bertani Roberta   Canova Piero
                        Zambon Fabio
Miti da sfatare


 ●   Terre rare
 ●   Materiali magnetici
 ●   Capacità estrattiva vs. capacità di separazione




29 ­ settembre ­ 2008      I lantanidi in Elettronica   2
Caratteristiche elettroniche

                                          → Contrazione lantanidica 
                                            (via sperimentale)




                                                →  Contrazione lantanidica
                                                   (via teorica)

29 ­ settembre ­ 2008     I lantanidi in Elettronica                     3
Fortunate coincidenze
                                                     ●      Finestra trasmissiva e 
                                                            banda 
                                                            d'amplificazione 
                                                            “vicine”




29 ­ settembre ­ 2008          I lantanidi in Elettronica                      4
Perdite in fibra standard




  Dispersione cromatica                                Attenuazione




                               Intrinseche                                    Estrinseche

                    ●   Transizioni elettroniche
                                                                ●     Metalli di transizione

                    ●   Vibrazioni molecolari
                                                                ●     Ione ossidrile

                    ●   Diffusione Rayleigh
                                                                ●     Curvature
                                                                ●     Accoppiamenti


29 ­ settembre ­ 2008                    I lantanidi in Elettronica                            5
Fibre Attive, fondamenti
                                            Processo base dell'amplificazione 
                                            ottica




    Modello idraulico di un EDFA.




29 ­ settembre ­ 2008               I lantanidi in Elettronica                   6
Non solo EDFA
 ●   NDFA
 ●   PDFA
 ●   TDFA




29 ­ settembre ­ 2008      I lantanidi in Elettronica   7
Tecniche costruttive
 ●   Tipo MCVD                                     ●       Tipo OVD




29 ­ settembre ­ 2008         I lantanidi in Elettronica              8
Considerazioni finali


 ●   Azione diretta a livello “luce”
 ●   Trasparenza rispetto al formato trasmissivo
 ●   WDM




29 ­ settembre ­ 2008         I lantanidi in Elettronica   9
WDM
                                                     Applicazione notevole in 
                                                     campo elettronica e 
                                                     telecomunicazioni.




29 ­ settembre ­ 2008   I lantanidi in Elettronica                           10

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Lantanidi in elettronica - Lanthanides in electronics

  • 2. Miti da sfatare ● Terre rare ● Materiali magnetici ● Capacità estrattiva vs. capacità di separazione 29 ­ settembre ­ 2008 I lantanidi in Elettronica 2
  • 3. Caratteristiche elettroniche → Contrazione lantanidica  (via sperimentale) →  Contrazione lantanidica (via teorica) 29 ­ settembre ­ 2008 I lantanidi in Elettronica 3
  • 4. Fortunate coincidenze ● Finestra trasmissiva e  banda  d'amplificazione  “vicine” 29 ­ settembre ­ 2008 I lantanidi in Elettronica 4
  • 5. Perdite in fibra standard Dispersione cromatica Attenuazione Intrinseche Estrinseche ● Transizioni elettroniche ● Metalli di transizione ● Vibrazioni molecolari ● Ione ossidrile ● Diffusione Rayleigh ● Curvature ● Accoppiamenti 29 ­ settembre ­ 2008 I lantanidi in Elettronica 5
  • 6. Fibre Attive, fondamenti Processo base dell'amplificazione  ottica Modello idraulico di un EDFA. 29 ­ settembre ­ 2008 I lantanidi in Elettronica 6
  • 7. Non solo EDFA ● NDFA ● PDFA ● TDFA 29 ­ settembre ­ 2008 I lantanidi in Elettronica 7
  • 8. Tecniche costruttive ● Tipo MCVD ● Tipo OVD 29 ­ settembre ­ 2008 I lantanidi in Elettronica 8
  • 9. Considerazioni finali ● Azione diretta a livello “luce” ● Trasparenza rispetto al formato trasmissivo ● WDM 29 ­ settembre ­ 2008 I lantanidi in Elettronica 9
  • 10. WDM Applicazione notevole in  campo elettronica e  telecomunicazioni. 29 ­ settembre ­ 2008 I lantanidi in Elettronica 10