Bandpass transmission characteristics of multimode fibers using Gaussian distribution

Multimode fiber (MF) has been used as a medium for transmitting a high data rate signal up to 10 Gbps over its high frequency region. This high frequency region of multimode fiber contains many passbands, which can be adopted as channels for sending many subcarrier signals. These passbands are located at different frequencies and vary from fiber to fiber depending on the delays of guided modes in the fiber. In this paper, the passbands at high frequency region of multimode fiber are studied. The delays of guided modes are assumed to be Gaussian distributed. The characteristics in terms of the average magnitude response and the average bandwidth of these passbands are determined. It is found that the average magnitude response of the passbands depends on the number of guided modes and the average bandwidth depends on the standard deviation of the delays.