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通过理论计算以及与实验对比，提出了划分ＨＥｍｎ模和ＥＨｍｎ模的新的理论判别条件，即：对第１组解，当Ｅｚ与Ｈｚ的系数之比等于一ｓｉｎ－为ＨＥｍｎ模，等于时为ＥＨｍｎ模；对第２组解，当Ｅｚ与Ｈｚ的系数之比等于时为ＨＥｍｎ模，等于一ｓｉｎ－１时为ＥＨｍｎ模，该判别条件与弱导波光纤特征方程有很好的相关性，利用这个判别条件，对比研究了ＨＥＮ”模和ＥＨｍｎ模的ＥｚＨｚ和横向电场的一些特点，得到了苦干与文献不同的结果。
By theoretically calculating and experimentally comparing with the experimental results, a new theoretic condition for distinguishing HEmn and EHmn modules is proposed. That is, for the solution of the first group, when the ratio between the coefficients of Ez and Hz is equal to a sin- EHmn mode. For the solution of the second group, the EHmn mode is equal to the ratio of the coefficient of Ez to Hz when the ratio is equal to HEmn, and the discriminant condition has a good correlation with the characteristic equation of the weak guided wave fiber, Using this discriminant condition, some characteristics of EzHz and transverse electric fields of HEN and EHmn modes were compared and the results of different work and literature were obtained.