Experimental mode coupling analysis in optical waveguides for sensor and component optimization

Investigation of mode coupling effects on sensitivity and bias of a multimode fiber loop interferometer: Application to an optimal design of a multimode fiber gyroscope

“…Knowing that the intermodal couplings are high between neighboring modes which have a small difference between their propagation constants and gradually decrease between far ones, a Gaussian function is adequate to model the power distribution of the intermodal coupling [33][34][35]. The concepts of neighboring modes and far ones are defined referring to a given mode.…”