[1] Univ Kebangsaan Malaysia, IMEN, Photon Technol Lab, Bangi 43600, Selangor, Malaysia
[2] Univ Putra Malaysia, Fac Engn, Dept Comp Syst & Commun, Photon Lab, Serdang 43400, Selangor, Malaysia
[3] Univ Malaysia Perlis, Coll Engn, Sch Comp & Commun Engn, Arau, Perlis, Malaysia