Optical logic gates are most important factors for the parallel operations and utilizations in VLSI circuits for the very high speed data processing and communications. This calls for multivalued logic implementation. In this paper we have communicated the trinary optical logic gates with optical implementations and a few applications of it to the half adder and full adder circuits, this may also be extended to multiplexers and de-multiplexers, flip-flops, registers, counters, etc. © Springer Science+Business Media B.V. 2008.