Alternative study of using electro-optic Pockels cell for massive reduction in the intensity of central frequency by multi-passing technique

摘要

Pockels cell is used for the processing of light in the field of optical communication and information processing. It is used for phase and amplitude modulation of light using polarized light as a carrier signal. A polarized incident light passes through electro-optic material, and by using the nonlinear property of the electro-optic material, the light is modulated as per the requirement. Here a study is done to show the massive reduction in the intensity of central frequency of the carrier light if multi-passing technique (multi-feedback) is adopted. In this paper, the authors show the significant number of passing (feedback) for such reduction in the intensity of central frequency and this number of passing (feedback) considerably increases the power of the sideband frequencies. The whole scheme is supported by MATLAB simulation. As the biasing signal information lies only in the sideband frequency, not in the carrier frequency, indirectly the increase in the power of the sideband frequencies strengthens the modulation information to be sent for communication by the carrier light wave having the central frequencies. This is the reason for increasing the sideband intensity by decreasing the intensity of the central frequency using multi-feedback mechanism.