One of the things that is different about polyamory is the treatment of jealousy. It is to be dealt with at the source or else it will become too big of an issue. In monogamy, the symptoms are treated.
Like if you are reading porn and your wife feel jealous by the women in it, a typical eaction is to no longer read the porn (where you couldbe caught). The more poly approach is to talk about why she feels jealous and explain that you see her much differently than the women in the pages (or in a browser). Let her realize that she is not in competition with these women and some of the jealuosy may die down.
I wish you luck.