Abstract: Transverse modes of electromagnetic fields are proposed to be encoded as qubits for simulating quantum computation. The method relies on simple optical devices such as Mach-Zehnder Interferometer (MZI) and phase shifter built on 2-transverse-mode-waveguides. The possibility of this encoding scheme was designed, simulated and verified through rigorous numerical analyses using the Beam propagation method. The proposed logic gates have the potential of being more compact and easily realizable than some other optical implementation proposals since it is based on planar light wave circuit technology.