Abstract

Open channels are peculiar incidents modes of the optical field that are transmitted by a highly diffusing medium with high efficiency (100 % in the ideal case). The existence of these modes has been predicted by Dorokhov et al. [1] more than 25 years ago. Although many experiments were made to prepare these modes [2 , 3], the maxima of transmission obtained in experiments, are ever much lower than 100 %. To test the theory, we have considered here another Dorokhov’s prediction: the average transmission of the modes that sustain the transmitted field must be T_T=66%, where T_T is defined by N₂ T_T= N₁ T (where T is the averaged transmission of energy, and N₁ and N₂ the number of incident and transmitted modes i.e. the size of the incident and transmitted mode basis).

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