2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/90449In this paper, we give two very simple schemes to produce two kinds of W states, one kind is path W state with one photon and the other is multiphoton photon polarization W state. These schemes just need a common commercial multiport fiber coupler and single photon sources, they are feasible by current technologies.2 pages, no figure. Revtex. This manuscript was written in Feb. 2002, revised in May, 2002Quantum Physicstext