Aether portal without glowstone.

I hate the Nether, so I don't want to have to go there to get the materials for the Aether portal. I would rather go to the deep dark even, or better yet, stay in the more normal parts of the overworld. I would like the Aether portal to be made out of iron blocks. After all making the Nether portal is fairly easy, so making the Aether portal should be relatively easy as well.