Electro-optic spectral narrowing and manipulation in a PPLN/APPLN optical parametric oscillator
| Autor: | Hung-pin Chung, 鍾宏彬 |
|---|---|
| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 Using electro-optical (EO) PPLN/APLN polarization mode converter to narrow and modulate the OPO bandwidth has been published (1st generation, 2nd generation). Because the problems of segmented temperature and electric field control, it is hard to modulate when tuning the output spectrum with different conditions. To solve this problem, we first use two or three stages cascaded EO APPLN to tune the output spectrum by switching the voltage of the EO sections at a fixed system temperature (3rd generation, 4th generation). Next, we use the self-adjustment method to design a single APPLN to accomplish the simultaneously electro-optical polarization mode filtering and OPG/OPO (5th generation).Because all range of the chips have the function of electro-optical polarization mode filtering, it significantly reduce the modulation voltage of the electro-optical filtering. The final part of this thesis is to provide a solution of the problem of spectrum tuning by using cascaded two simultaneously EO polarization mode filter and OPG/OPO APPLN (6th generation). The chips of 6th generation are designed by an improved self-adjustment method to avoid the initial phase shift problems of signal resulted from segmented AOS structure design. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|