Apodization of elliptical-core two-mode fiber acousto-optic filter based on acoustic polarization control.
We propose and demonstrate a novel apodization technique for an elliptical-core two-mode fiber acousto-optic filter by twisting the fiber and adjusting the acoustic polarization. The sidelobe suppression in the filter spectrum was improved from -9.7 to -15.5 dB. A theoretical analysis that includes acoustic birefringence explains the experimental results with good agreement.
Park
Hyun Chul
HC
Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. wasteland@kaist.ac.kr
Kim
Byoung Yoon
BY
Park
Hee Su
HS