Wavelength filtering characteristics of Solc filter based on Ti:PPLN channel waveguide.
We have analyzed the Solc filtering characteristics in a periodically poled Ti:LiNbO3 (Ti:PPLN) multimode waveguide. The single- and dual-wavelength filtering were achieved under the optimized guiding condition for the TEM(00)-like mode and two mode (TEM(00)- and TEM(01)-like mode), respectively. The full width at half-maximum of the filter was about 0.21 nm at both guiding conditions. We found that the origin of two peaks of the dual-wavelength Solc filter in the two-mode guiding condition is the different effective refractive index between the TEM(00)- and TEM(01)-like modes. The wavelength difference of two peaks is about 0.8 nm at room temperature.
Lee
Y L
YL
Nonlinear Optics Lab, Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Korea. laks@apri.gist.ac.kr
Yu
N E
NE
Kee
C-S
CS
Ko
D-K
DK
Lee
J
J
Yu
B-A
BA
Shin
W
W
Eom
T J
TJ
Noh
Y-C
YC