Temperature Tunable Filter And Electrical Tunable Photonic Band Gap Based On Periodically Poled Lithum Niobate

In this paper, by analyzing the light travel theory in birefringent layered media and the novel properties of periodically poled lithum niobate (PPLN), the temperature tunable multi-wavelength filter and wide-band flat-top filter have been designed; at the same time, the electrical tunable photonic band gap has been theoretically proposed. Based on the transverse electric-optical effect in PPLN and traditional solc filter theory, and also the previous researches on temperature tunable single filter on PPLN, we have preceded the theoretical and experimental study in multi-wavelength filter and wide-band flat-top filter by local temperature controlling technique. The results matches well with the theoretical expectations expect for a correction for a parameter in the Sellmeier equation. We also have discussed electrical tunable photonic band gap based on submicron periodical pole LiNbO3 (SPPLN). The 4x4 transfer matrix is used in simulations and two applications of multi-wavelength photonic band gaps on quasi-periodical poled LiNbO3 (QPLN) and optical oscillator cavities with a special designation are discussed.