  In this paper, we have proposed the compound structure of one-dimensional
photonic crystal (PC), which includes series connection and parallel connection
PC. We have studied the transmission characteristics of series connection and
parallel connection PC, and obtained some new results. In addition, we have
proved the series connection one-dimensional PC can realize the logical AND
operation, and the parallel connection one-dimensional PC can realize the
logical OR operation. The compound structure of one-dimensional PC can design
more new type structure optical devices, and will provide the basic for
designing quantum computer.
