Abstract In a non-flat FRW model, we have considered our Universe to be filled with non-interacting dark energy and matter. For the models, assumed Tachyonic Field (TF), Generalized Cosmic Chaplygin Gas (GCCG), New Variable Modified (NVMCG), Chaplygin–Jacobi (MCJG), Chaplygin–Abel (MCAG). We then analyzed these models varying cosmological parameters in their optical depth behaviour presented re...